1. Quantum Computing: Lecture Notes, by Ronald de Wolf
2. Advanced Quantum Algorithms: Primer on Circuits, QFT and Grover, by Simon Apers
3. Scott Aaronson: Lecture Notes, blog, courses
4. SciRate

The Brave browser attracted some interest as it provides protection against malware, and blocks annoying ads, like flickering images, popups, which want you to download shady and harmful software. You can download the Brave browser in the Google playstore.

1. Short story
2. Long story

Clearing the cache in the desktop version of Brave is easy: Go to the settings menu, then search for "clear cache". Done.

1. Short story

On Android the settings menu for Brave does not offer any method to clear the cache. Instead, use the App info to clear the cache.

Long press on the Brave icon.

Press on the encircled i.

Press "Clear data".

Finally, press "Clear cache".

2. Long story

The above short story solves the problem. However, it does not tell, why this might be necessary.

In a particular case for me I had the need to clear the cache, when I upgraded Pagefind 1.3 to 1.4. Apparently, the two version were not compatible, and Pagefind 1.4 was no longer able to search. I solved this by clearing the cache in Brave.

The reason behind the cache problem was that in the NGINX configuration I had:

location ~ \.(js|css|jpg|jpeg|png|webp|mp4|pdf)$ {
    add_header Cache-Control "public, max-age=7776000";
}

JavaScript is advertised by the web-server to be cached by the browser for 90 days: 90 * 60 * 60 * 24 = 7,776,000.

The ordinary user can see this header either in his browser, or using curl:

$ curl -I https://eklausmeier.goip.de/pagefind/pagefind-ui.js
HTTP/1.1 200 OK
Server: nginx/1.28.0
Date: Tue, 09 Sep 2025 10:26:46 GMT
Content-Type: text/javascript
Content-Length: 84597
Last-Modified: Mon, 08 Sep 2025 17:05:18 GMT
Connection: keep-alive
ETag: "68bf0cce-14a75"
Cache-Control: public, max-age=7776000
Accept-Ranges: bytes

For images, videos, and PDF that caching interval is adequate. For Pagefind 1.4 it was not.

1. Brief history: In May 2021 I moved from WordPress to the static site generator Saaze. See post Moved Blog To eklausmeier.goip.de. I was particularly attracted by the simplicity of Saaze. However, a number of features were missing:

1. being able to move the blog around under different root directories
2. showing math formulas using MathJax

I added those two mssing features to Saaze.

I noticed that I could improve the speed of Saaze quite significantly. Furthermore, the code of Saaze could be stripped of unnecessary complexities, but still retaining the old logic. This led to a modified version of Saaze, which I called Simplified Saaze. Simplified Saaze has fewer lines of code than Saaze. Despite this, it is almost two orders of magnitude faster than the original.

See

1. Making Static Site Generator 30-Times Faster
2. Making Static Site Generator 500-Times Faster
3. Performance Comparison Saaze vs. Hugo vs. Zola

Just out of curiosity I wanted to know how much slower Simplified Saaze is than Hugo. Hugo self advertises itself as "The world’s fastest framework for building websites". Hugo is written in the compiled language Go, while Simplified Saaze is written in the interpreted language PHP. I expected that Hugo would blow Simplified Saaze out of the water.

To my great surprise the opposite was the case. Simplified Saaze was one order of magnitude faster than Hugo. I didn't expect that.

I tested against Zola. Still, Simplified Saaze was faster by a factor than Zola.

There are at least two other static site generators, which are also faster than Hugo and Zola: they are called

1. Blade
2. Nift

So my findings are not entirely surprising.

2. Conferences. Besides reporting about my findings on this very blog, I offered slides to the following conferences:

1. PHP conference in Berlin in 2021
2. Dutch PHP conference in 2022
3. IPC Berlin 2022
4. Forum PHP 2022
5. Frontmania 2022
6. Longhorn PHP 2022 in Texas
7. PHP UK Conference 2023
8. Build Stuff conference 2022
9. Infobip Shift 2023

All the conferences rejected the slides. This is not entirely uncommon, as the presenter is paid all traveling and hotel costs for the conference. However, the organizers of PHP conference in Berlin asked me to publish my findings in their magazine called "PHP Magazin". It was published there.

3. Slides. Here are the slides.

A Static Site Generator in PHP, Faster Than Hugo or Zola

4. Themes. There are a number of themes for Simplified Saaze:

1. Saaze example, a pure example theme, simple to use and modify
2. J-Pilot, showcasing an open-source software project and having a hierarchical menu
3. Koehntopp, a blog for a computer scientist
4. NukeKlaus, a blog for a nuclear power engineer
5. Mobility, a multilingual site for promoting software for battery management used in electric vehicles
6. Vonhoff, a German site for a doctoral student
7. Paternoster, a blog of a web developer
8. Panorama, a site for a restaurant showing their rooms and their menu
9. Lemire, a site for a computer science professor
10. Wendt, a German political blog
11. Myra West, a personal blog about psychology, friendship, and personal journaling

$ xclock
Invalid MIT-MAGIC-COOKIE-1 key
Error: Can't open display: :0

You cannot even run

$ xhost +
Invalid MIT-MAGIC-COOKIE-1 key
xhost:  unable to open display ":0"

So, you are stuck.

2. Solution. Copy current X11 cookie to .Xauthority file, like so:

$ cp -p /tmp/serverauth.wBYidy7HBj .Xauthority

The actual serverauth filename varies.

This was documented here: Invalid MIT-MAGIC-COOKIE-1 keyxhost: unable to open display.

Check with

$ xauth list

I recently configured a minimal Oracle cloud instance, see First Impressions on Oracle Cloud. This blog post shows how to install Simplified Saaze on that instance running on Oracle Linux 9.

I had already written about some installations of Simplified Saaze:

1. Simplified Saaze
2. Installing Simplified Saaze on Windows 10
3. Installing Simplified Saaze on Windows 10 #2
4. Installing Simplified Saaze on Android

1. Installing packages

Install php-cli.

dnf --disablerepo=ol9_oci_included install php-cli

Packages php-common and php-opcache are automatically installed as dependency as well.

The much large package php contains an httpd-server, which we do not want. We already have chosen NGINX. So, we did not install package php, but just php-cli which is way smaller.

We need to compile two PHP PECL extensions:

1. MD4C
2. Yaml

Therefore we need some development libraries.

dnf --disablerepo=ol9_oci_included install php-devel

This in turn installs dependencies.

autoconf                  noarch       2.69-39.el9                 ol9_appstream           741 k
automake                  noarch       1.16.2-8.el9                ol9_appstream           794 k
cmake-filesystem          x86_64       3.26.5-2.el9                ol9_appstream            11 k
gcc-c++                   x86_64       11.5.0-5.0.1.el9_5          ol9_appstream            13 M
keyutils-libs-devel       x86_64       1.6.3-1.el9                 ol9_appstream            88 k
krb5-devel                x86_64       1.21.1-8.0.1.el9_6          ol9_appstream           187 k
libcom_err-devel          x86_64       1.46.5-7.el9                ol9_appstream            24 k
libkadm5                  x86_64       1.21.1-8.0.1.el9_6          ol9_baseos_latest        75 k
libselinux-devel          x86_64       3.6-3.el9                   ol9_appstream           338 k
libsepol-devel            x86_64       3.6-2.el9                   ol9_appstream            87 k
libstdc++-devel           x86_64       11.5.0-5.0.1.el9_5          ol9_appstream           3.1 M
libtool                   x86_64       2.4.6-46.el9                ol9_appstream           606 k
libverto-devel            x86_64       0.3.2-3.el9                 ol9_appstream            15 k
libxml2-devel             x86_64       2.9.13-11.el9_6             ol9_appstream           1.1 M
m4                        x86_64       1.4.19-1.el9                ol9_appstream           333 k
openssl-devel             x86_64       1:3.2.2-6.0.1.el9_5.1       ol9_appstream           4.0 M
pcre2-devel               x86_64       10.40-6.0.1.el9             ol9_appstream           669 k
pcre2-utf16               x86_64       10.40-6.0.1.el9             ol9_appstream           213 k
pcre2-utf32               x86_64       10.40-6.0.1.el9             ol9_appstream           202 k
perl-File-Compare         noarch       1.100.600-481.1.el9_6       ol9_appstream            12 k
perl-Thread-Queue         noarch       3.14-460.el9                ol9_appstream            28 k
perl-threads              x86_64       1:2.25-460.el9              ol9_appstream            65 k
perl-threads-shared       x86_64       1.61-460.el9                ol9_appstream            50 k

The PHP Yaml extension needs the yaml C header.

dnf --disablerepo=ol9_oci_included --enablerepo=ol9_codeready_builder install libyaml-devel

This strange looking --disablerepo=ol9_oci_included was explained in First Impressions on Oracle Cloud. The --enablerepo adds the repo such that dnf finds libyaml-devel. See Installing LibYAML.

2. Compiling extensions

1. MD4C extension. Copy the tar-file:

scp -i ~/.ssh/ssh-key-2025-08-02-dl8dbo-opc.key -p md4c-1.1.tgz opc@oracle-cloud-instance:/tmp/

Unpack, go to to the directory, then run

phpize
./configure
make

2. Yaml extension. Copy the tar-file:

scp -i ~/.ssh/ssh-key-2025-08-02-dl8dbo-opc.key -p yaml-2.2.5.tgz opc@oracle-cloud-instance:/tmp/

Unpack, then run

phpize
./configure
make
make test

Both modules are then copied to /usr/lib64/php/modules:

cd /usr/lib64/php/modules/
cp -p ~opc/D/md4c-1.1/modules/md4c.so .
cp -p ~opc/D/yaml-2.2.5/modules/yaml.so .
chown root:root md4c.so yaml.so

Finally, php.ini needs adjustment. Add the following new file to /etc/php.d/90-md4c-yaml.ini:

extension=md4c
extension=yaml

Check results with:

php -m

Result should be:

[PHP Modules]
bz2
calendar
Core
ctype
curl
date
exif
fileinfo
filter
ftp
gettext
hash
iconv
json
libxml
md4c
openssl
pcntl
pcre
Phar
readline
Reflection
session
sockets
SPL
standard
tokenizer
yaml
Zend OPcache
zlib

[Zend Modules]
Zend OPcache

3. Installing composer

There is a lot of Tohu wa-bohu around the installation of PHP composer. I followed the instructions in the PKGBUILD from the Arch Linux package composer.

Here is a simple installation recipe.

1. Download composer.phar from composer Releases.
2. Rename: mv composer.phar /usr/local/bin/composer
3. chown root:root /usr/local/bin/composer
4. Make it executable: chmod 775 /usr/local/bin/composer

Checking that it actually works, let's fetch Saaze example.

cd
composer create-project eklausme/saaze-example

Output is:

$ time composer create-project eklausme/saaze-example
Creating a "eklausme/saaze-example" project at "./saaze-example"
Installing eklausme/saaze-example (v1.4)
  - Downloading eklausme/saaze-example (v1.4)
  - Installing eklausme/saaze-example (v1.4): Extracting archive
Created project in /home/opc/saaze-example
Loading composer repositories with package information
Updating dependencies
Lock file operations: 1 install, 0 updates, 0 removals
  - Locking eklausme/saaze (v2.5)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Downloading eklausme/saaze (v2.5)
  - Installing eklausme/saaze (v2.5): Extracting archive
Generating optimized autoload files
No security vulnerability advisories found.

real    0m2.132s
user    0m0.467s
sys     0m0.210s

4. Using Simplified Saaze

Now the static HTML files can be generated.

$ time php saaze
Building static site in /home/opc/saaze-example/build...
        execute(): filePath=/home/opc/saaze-example/content/auxil.yml, nSIentries=0, totalPages=0, entries_per_page=20
        execute(): filePath=/home/opc/saaze-example/content/music.yml, nSIentries=11, totalPages=1, entries_per_page=20
        execute(): filePath=/home/opc/saaze-example/content/blog.yml, nSIentries=35, totalPages=2, entries_per_page=20
Finished creating 3 collections, 3 with index, and 47 entries (0.06 secs / 756kB)
#collections=3, parseEntry=0.0020/47-3, md2html=0.0009, toHtml=0.0002/47, renderEntry=0.0054/47, renderCollection=0.0007/6, content=47/0

real    0m0.092s
user    0m0.019s
sys     0m0.035s

Looking at the result in the build directory.

$ ls -alF build/
total 8
drwxr-xr-x.  4 opc opc   49 Aug  4 13:47 ./
drwxr-xr-x.  7 opc opc  184 Aug  4 13:47 ../
drwxr-xr-x. 38 opc opc 4096 Aug  4 13:47 blog/
-rw-r--r--.  1 opc opc  965 Aug  4 13:47 index.html
drwxr-xr-x.  4 opc opc   48 Aug  4 13:47 music/

To actually deploy the web-site the following simple shell script will do. Beforehand, create mkdir /srv/http/oldblogs.

#!/bin/bash
# Deploy Saaze-Example

cd /home/opc/php/saaze-example
time RBASE="/saaze-example" php saaze -b /tmp/build

cd /tmp/build
rm index.html
ln -s blog/index.html
cp -p /home/opc/php/saaze-example/public/blogklm.css .

cd /srv/http/
rm -rf oldblogs/saaze-example/
mv saaze-example/ oldblogs/

mv /tmp/build/ saaze-example

To enable NGINX to read all subdirectories in /srv/http you must instruct SELinux:

chcon -R -t public_content_rw_t /srv/http

I read about the Oracle Always Free Instance here:

1. Oracle Cloud Always Free Instance Ubuntu -> Debian Conversion
2. Oracle Cloud: first impressions

I registered for Oracle cloud.

The registration requires:

1. a credit card
2. a smartphone with the Oracle Mobile Authenticator app

1. Instance Setup

The credit card will be debited with 0.93 EUR, but this sum will be refunded.

The Oracle authenticator app is known to be problematic, as it seems there is no way to transfer the credentials to another phone, in case you upgrade your phone.

The setup of a virtual Linux machine on Oracle cloud is quite confusing, but clicking through all the endless dialogues will finally provide you with a simple virtual machine and a public IP.

You can then connect to this public IP giving ssh keys, which were generated during the dialogues.

ssh -l opc -i ssh-key-2025-08-02.key 144.24.181.149

The machine itself is fast, although it uses a now no longer produced AMD EPYC 7551 ("Naples") processor. This AMD EPYC 7551 was produced in 2017.

$ lscpu
Architecture:                x86_64
  CPU op-mode(s):            32-bit, 64-bit
  Address sizes:             40 bits physical, 48 bits virtual
  Byte Order:                Little Endian
CPU(s):                      2
  On-line CPU(s) list:       0,1
Vendor ID:                   AuthenticAMD
  Model name:                AMD EPYC 7551 32-Core Processor
    CPU family:              23
    Model:                   1
    Thread(s) per core:      2
    Core(s) per socket:      1
    Socket(s):               1
    Stepping:                2
    BogoMIPS:                3992.49
    Flags:                   fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe
                             1gb rdtscp lm rep_good nopl xtopology cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcn
                             t tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw
                              topoext perfctr_core ssbd ibpb vmmcall fsgsbase tsc_adjust bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xg
                             etbv1 clzero xsaveerptr virt_ssbd arat npt nrip_save vgif overflow_recov succor arch_capabilities
Virtualization features:
  Virtualization:            AMD-V
  Hypervisor vendor:         KVM
  Virtualization type:       full
Caches (sum of all):
  L1d:                       64 KiB (1 instance)
  L1i:                       64 KiB (1 instance)
  L2:                        512 KiB (1 instance)
  L3:                        16 MiB (1 instance)
NUMA:
  NUMA node(s):              1
  NUMA node0 CPU(s):         0,1
Vulnerabilities:
  Gather data sampling:      Not affected
  Indirect target selection: Not affected
  Itlb multihit:             Not affected
  L1tf:                      Not affected
  Mds:                       Not affected
  Meltdown:                  Not affected
  Mmio stale data:           Not affected
  Reg file data sampling:    Not affected
  Retbleed:                  Mitigation; untrained return thunk; SMT vulnerable
  Spec rstack overflow:      Vulnerable: Safe RET, no microcode
  Spec store bypass:         Mitigation; Speculative Store Bypass disabled via prctl
  Spectre v1:                Mitigation; usercopy/swapgs barriers and __user pointer sanitization
  Spectre v2:                Mitigation; Retpolines; IBPB conditional; STIBP disabled; RSB filling; PBRSB-eIBRS Not affected; BHI Not affected
  Srbds:                     Not affected
  Tsa:                       Not affected
  Tsx async abort:           Not affected

Memory is not opulent, one GB:

$ lsmem
RANGE                                 SIZE  STATE REMOVABLE BLOCK
0x0000000000000000-0x000000003fffffff   1G online       yes   0-7

Memory block size:       128M
Total online memory:       1G
Total offline memory:      0B

SSD storage is 30 GB:

$ df -h
Filesystem                  Size  Used Avail Use% Mounted on
devtmpfs                    4.0M     0  4.0M   0% /dev
tmpfs                       252M     0  252M   0% /dev/shm
tmpfs                       101M  2.8M   99M   3% /run
efivarfs                    256K   35K  217K  14% /sys/firmware/efi/efivars
/dev/mapper/ocivolume-root   30G  5.6G   24G  19% /
/dev/sda2                   2.0G  623M  1.4G  32% /boot
/dev/mapper/ocivolume-oled   15G  202M   15G   2% /var/oled
/dev/sda1                   100M  7.2M   93M   8% /boot/efi
tmpfs                        51M     0   51M   0% /run/user/989
tmpfs                        51M     0   51M   0% /run/user/1000

Partitions are:

$ lsblk -af
lsblk -af
NAME               FSTYPE      FSVER    LABEL UUID                                   FSAVAIL FSUSE% MOUNTPOINTS
sda
├─sda1             vfat        FAT16          AE3C-806E                                92.6M     7% /boot/efi
├─sda2             xfs                        dd88872e-0527-4193-8282-b8281f1ae6fd      1.3G    31% /boot
└─sda3             LVM2_member LVM2 001       13gBAf-puy6-RFhI-zAfe-nNzD-sYAi-3zKEWn
  ├─ocivolume-root xfs                        3aa327e4-ce2d-4637-9f24-7687e2c0e8b9     23.8G    19% /
  └─ocivolume-oled xfs                        1a046f0c-bfff-4334-baf3-32b6db923a8a     14.7G     2% /var/oled

After I installed NGINX:

[root@instance-20250802-1100 ~]# netstat -antp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 127.0.0.1:44321         0.0.0.0:*               LISTEN      2410/pmcd
tcp        0      0 0.0.0.0:111             0.0.0.0:*               LISTEN      1/systemd
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      6307/nginx: master
tcp        0      0 127.0.0.1:4330          0.0.0.0:*               LISTEN      3296/pmlogger
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      2230/sshd: /usr/sbi
tcp        0      0 10.0.0.138:49994        169.254.169.254:80      ESTABLISHED 3356/runcommand
tcp        0      0 10.0.0.138:53180        169.254.169.254:80      ESTABLISHED 3356/runcommand
tcp        0      0 10.0.0.138:47106        147.154.152.55:443      ESTABLISHED 2421/gomon
tcp        0      0 10.0.0.138:38010        169.254.169.254:80      ESTABLISHED 2421/gomon
tcp        0      0 10.0.0.138:45260        169.254.169.254:80      ESTABLISHED 3356/runcommand
tcp        0    196 10.0.0.138:22           149.172.93.57:60574     ESTABLISHED 4872/sshd: opc [pri
tcp        0      0 10.0.0.138:58454        169.254.169.254:80      ESTABLISHED 3356/runcommand
tcp        0      0 10.0.0.138:51840        169.254.169.254:80      ESTABLISHED 3356/runcommand
tcp        0      0 10.0.0.138:40406        169.254.169.254:80      ESTABLISHED 3356/runcommand
tcp        0      0 10.0.0.138:46170        169.254.169.254:80      ESTABLISHED 3356/runcommand
tcp6       0      0 ::1:44321               :::*                    LISTEN      2410/pmcd
tcp6       0      0 :::111                  :::*                    LISTEN      1/systemd
tcp6       0      0 :::80                   :::*                    LISTEN      6307/nginx: master
tcp6       0      0 ::1:4330                :::*                    LISTEN      3296/pmlogger
tcp6       0      0 :::22                   :::*                    LISTEN      2230/sshd: /usr/sbi

2. Problem with dnf

Just using dnf or yum will essentially hang the machine.

User Any_Working3520 figured out in dnf install is very slow on my OCI compute instances, that you have to disable one particular repo for dnf/yum:

yum --disablerepo=ol9_oci_included ...
dnf --disablerepo=ol9_oci_included ...

With that you can update the machine:

dnf --disablerepo=ol9_oci_included update

3. Setup NGINX

The help center post "Create a web server on a compute instance" was helpful.

Installing NGINX:

dnf --disablerepo=ol9_oci_included install nginx
systemctrl enable nginx
systemctrl start nginx

You have to specifically allow incoming TCP traffic for port 80:

firewall-cmd --permanent --zone=public --add-service=http
firewall-cmd --reload

Then head to Virtual Cloud Networks.

Click on the Default Security List for vcn-xyz. Then Security rules.

Create an ingress rule:

1. Source Type: CIDR
2. Source CIDR: 0.0.0.0/0
3. IP Protocol: TCP
4. Source Port Range: All (it's really important to choose All, not just 80)
5. Destination Port Range: 80

Both ports, 22 and 80, must have Source Port Range set to All. This is somewhat counterintuitive, but required.

Check in a browser:

If you want to change the NGINX root directory, you must also change the SELinux security context. See Install the NGINX Web Server and Proxy on Oracle Linux. Assume your new root is /srv/http. Then

chcon -Rt httpd_sys_content_t /srv/http

Check with ```ls -lZ /srv/http`.

4. Problem with sporadic dropouts

If you experiment with the above Security Lists be prepared to get yourself disconnected.

However, for unknown reasons the connection to the instance drops completely, i.e., no ssh connection and no HTTP connection. You have to wait an hour to get it back again.

This happens regularly.

The default iptables rules are:

# iptables -S
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
-N BareMetalInstanceServices
-A OUTPUT -d 169.254.0.0/16 -j BareMetalInstanceServices
-A BareMetalInstanceServices -d 169.254.0.2/32 -p tcp -m owner --uid-owner 0 -m tcp --dport 3260 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.2.0/24 -p tcp -m owner --uid-owner 0 -m tcp --dport 3260 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.4.0/24 -p tcp -m owner --uid-owner 0 -m tcp --dport 3260 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.5.0/24 -p tcp -m owner --uid-owner 0 -m tcp --dport 3260 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.0.2/32 -p tcp -m tcp --dport 80 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.169.254/32 -p udp -m udp --dport 53 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.169.254/32 -p tcp -m tcp --dport 53 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.0.3/32 -p tcp -m owner --uid-owner 0 -m tcp --dport 80 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.0.4/32 -p tcp -m tcp --dport 80 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.169.254/32 -p tcp -m tcp --dport 80 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.169.254/32 -p udp -m udp --dport 67 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.169.254/32 -p udp -m udp --dport 69 -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.169.254/32 -p udp -m udp --dport 123 -m comment --comment "Allow access to OBMCS local NTP service" -j ACCEPT
-A BareMetalInstanceServices -d 169.254.0.0/16 -p tcp -m tcp -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j REJECT --reject-with tcp-reset
-A BareMetalInstanceServices -d 169.254.0.0/16 -p udp -m udp -m comment --comment "See the Oracle-Provided Images section in the Oracle Bare Metal documentation for security impact of modifying or removing this rule" -j REJECT --reject-with icmp-port-unreachable

Simplified Saaze can also be used in a dynamic mode. In that mode the Markdown file is converted to HTML on the fly, i.e., in the exact moment when the web-server receives a request, Simplified Saaze produces the required HTML.

This blog post describes why I moved back from dynamic mode to static mode.

• A. Current setup
• B. Deployment scripts for static sites
• C. Running deployment scripts
• D. NGINX configuration

A. Current setup

1. File processing in Simplified Saaze. Simplified Saaze is written in PHP. It does the following for every Markdown file:

1. reads collection file with file_get_contents()
2. recursively traverses the directory for all Markdown files with scandir()
3. read entire file with file_get_contents()
4. parses the file with yaml_parse()
5. file content is checked against keywords (like '[youtube]' or $$ for math)
6. content is then converted to HTML using MD4C
7. excerpt is computed from HTML using strip_tags()
8. content is word counted on original Markdown
9. the (output) template PHP is run on the HTML, which in turn calls eval() on the entire HTML
10. that is then written to a file using file_put_contents(), or directly fed back to the web-server

Quite some file I/O and string processing.

The last few blog posts regarding stability mountains were quite large Markdown files:

-rw-r--r-- 1 klm klm 415K Jul 15 10:21 07-14-stability-mountains-for-bdf1.md
-rw-r--r-- 1 klm klm 810K Jul 15 10:30 07-14-stability-mountains-for-bdf2.md
-rw-r--r-- 1 klm klm 1.2M Jul 15 10:32 07-14-stability-mountains-for-bdf3.md
-rw-r--r-- 1 klm klm 1.6M Jul 15 10:36 07-14-stability-mountains-for-bdf4.md
-rw-r--r-- 1 klm klm 2.0M Jul 15 10:38 07-14-stability-mountains-for-bdf5.md
-rw-r--r-- 1 klm klm 2.4M Jul 15 10:39 07-14-stability-mountains-for-bdf6.md
-rw-r--r-- 1 klm klm 1.3M Jul 15 10:43 07-14-stability-mountains-for-tendler3.md
-rw-r--r-- 1 klm klm 1.7M Jul 15 10:44 07-14-stability-mountains-for-tendler4.md
-rw-r--r-- 1 klm klm 2.1M Jul 15 10:45 07-14-stability-mountains-for-tendler5.md
-rw-r--r-- 1 klm klm 2.5M Jul 15 10:46 07-14-stability-mountains-for-tendler6.md
-rw-r--r-- 1 klm klm 3.0M Jul 15 10:47 07-14-stability-mountains-for-tendler7.md
-rw-r--r-- 1 klm klm 1.2M Jul 15 10:51 07-14-stability-mountains-for-tischer3.md
-rw-r--r-- 1 klm klm 1.6M Jul 15 10:55 07-14-stability-mountains-for-tischer4.md
-rw-r--r-- 1 klm klm 2.0M Jul 15 10:56 07-14-stability-mountains-for-tischer5.md
-rw-r--r-- 1 klm klm 2.4M Jul 15 10:58 07-14-stability-mountains-for-tischer6.md
-rw-r--r-- 1 klm klm 2.8M Jul 15 10:59 07-14-stability-mountains-for-tischer7.md
-rw-r--r-- 1 klm klm 3.2M Jul 15 11:00 07-14-stability-mountains-for-tischer8.md

2. NGINX caching. I had NGINX configured such that a once generated HTML file will be cached using fastcgi_no_cache.

http {
    root   /srv/http;

    fastcgi_cache_path /var/cache/nginx/ keys_zone=nginxpc:720m inactive=720m;
    fastcgi_cache_key "$request_method$request_uri";
    fastcgi_cache nginxpc;
    fastcgi_cache_valid 720m;
    ...
}

I.e., files are cached for 720 minutes, that is 12 hours.

Caching is activated for below files:

    server {
        set $no_cache 0;
        #Don't cache POST requests
        if ($request_method = POST) {
                set $no_cache 1;
        }
        if ($request_uri !~ "^/(aux|blog|music|gallery|jpilot|koehntopp|lemire|mobility|myrawest|nukeklaus|panorma|paternoster|saaze-example|vonhoff|wendt)") {
                set $no_cache 1;
        }
        ...
        fastcgi_cache_bypass $no_cache;
        fastcgi_no_cache $no_cache;

    }

I had hoped that I can get the best of both worlds:

1. speed of static files served by the web-server
2. dynamic generation of HTML

The cache directory is quite full:

[root@ryzen /var/cache/nginx]# ls -l | wc
   1110    9983   87565

3. All sub-blogs via a single index.php. Below index.php served all sub-blogs:

1. my own blog
2. J-Pilot
3. Koehntop
4. Lemire
5. Mobility
6. Myra West
7. Nukeklaus
8. Panorama
9. Paternoster
10. Saaze-Example
11. Vonhoff
12. Wendt

The PHP source code for index.php is as follows.

<?php
    $blog = array(
        // prefix => array( directory with content, flag for cutting prefix, default sub-URL )
        '/aux' => array('/home/klm/php/sndsaaze',0),
        '/blog' => array('/home/klm/php/sndsaaze',0),
        '/gallery' => array('/home/klm/php/sndsaaze',0),
        '/music' => array('/home/klm/php/sndsaaze',0),
        '/jpilot' => array('/home/klm/php/saaze-jpilot',1),
        '/koehntopp' => array('/home/klm/php/saaze-koehntopp',1),
        '/lemire' => array('/home/klm/php/saaze-lemire',1,'/blog'),
        '/mobility' => array('/home/klm/php/saaze-mobility',1),
        '/myrawest' => array('/home/klm/php/saaze-myrawest',1),
        '/nukeklaus' => array('/home/klm/php/saaze-nukeklaus',1),
        '/paternoster' => array('/home/klm/php/saaze-paternoster',1,'/posts'),
        '/panorama' => array('/home/klm/php/saaze-panorama',1),
        '/saaze-example' => array('/home/klm/php/saaze-example',1,'/blog'),
        '/vonhoff' => array('/home/klm/php/saaze-vonhoff',1),
        '/wendt' => array('/home/klm/php/saaze-wendt',1),
    );

    $query_string = isset($_SERVER['QUERY_STRING']) ? '/' . ltrim($_SERVER['QUERY_STRING'],'/') : '/blog';
    if ($query_string === '/') $query_string = '/blog';
    $dir = '/home/klm/php/sndsaaze';
    foreach ($blog as $prefix => $dirFlag) {	// linear search in blog[] array
        if (str_starts_with($query_string,$prefix)) {
            $dir = $dirFlag[0];
            if ($dirFlag[1]) {	// cut prefix and set rbase
                $query_string = substr($query_string,strlen($prefix));
                $GLOBALS['rbase'] = $prefix;
            }
            // Set default within the respective blog
            if (strlen($query_string) <= 1 && isset($dirFlag[2])) $query_string = $dirFlag[2];
            break;
        }
    }
    //if (!isset($dir)) { echo "/srv/http/index.php: Not found in blog-array.\n"; return; }

    // Composer is very slow, see https://eklausmeier.goip.de/blog/2023/10-29-simplified-saaze-monitored-with-phpspy
    require '/home/klm/php/sndsaaze/vendor/eklausme/saaze/CollectionArray.php';
    require '/home/klm/php/sndsaaze/vendor/eklausme/saaze/Collection.php';
    require '/home/klm/php/sndsaaze/vendor/eklausme/saaze/Config.php';
    require '/home/klm/php/sndsaaze/vendor/eklausme/saaze/Entry.php';
    require '/home/klm/php/sndsaaze/vendor/eklausme/saaze/MarkdownContentParser.php';
    require '/home/klm/php/sndsaaze/vendor/eklausme/saaze/Saaze.php';
    require '/home/klm/php/sndsaaze/vendor/eklausme/saaze/TemplateManager.php';

    (new \Saaze\Saaze($dir))->run($query_string);

4. NGINX configuration for dynamic mode. For above index.php to work, NGINX needs to have some rewrite rules.

rewrite "^/(jpilot|koehntopp|lemire|mobility|myrawest|nukeklaus|panorama|paternoster|vonhoff|wendt)/(assets|img|jscss|pagefind|pkg)/(.*)"  "/rewrite/saaze-$1/public/$2/$3" last;
rewrite "^/(saaze-example)/(.*)(\.ico|\.css)"  "/rewrite/$1/public/$2$3" last;
rewrite "^/(jpilot|paternoster)/(.*)(\.ico|\.css)"     "/rewrite/saaze-$1/public/$2$3" last;
rewrite "^/(|aux|blog|music|gallery|404\.html|feed\.xml|sitemap\.html|sitemap\.xml|jpilot|koehntopp|lemire|mobility|myrawest|nukeklaus|panorama|paternoster|saaze-example|vonhoff|wendt)($|/.*)"  "/index.php?$1$2" last;
rewrite "^/lemire(/*)$" "/lemire/blog/" last;
rewrite "^/(aux|blog|music|gallery|jpilot|koehntopp|lemire|mobility|myrawest|nukeklaus|panorama|paternoster|saaze-example|vonhoff|wendt)/(.*[^/])$"  "$1/$2/index.html" last;

Add to these rewrite rules below symbolic links under /srv/http:

$ /srv/http: ls -l rewrite
total 8
lrwxrwxrwx  1 klm  klm    27 Jun 18  2024 saaze-example -> /home/klm/php/saaze-example/
lrwxrwxrwx  1 klm  klm    26 Aug 14  2023 saaze-jpilot -> /home/klm/php/saaze-jpilot/
lrwxrwxrwx  1 klm  klm    29 Aug 14  2023 saaze-koehntopp -> /home/klm/php/saaze-koehntopp/
lrwxrwxrwx  1 klm  klm    26 Dec 17  2023 saaze-lemire -> /home/klm/php/saaze-lemire/
lrwxrwxrwx  1 klm  klm    28 Aug 14  2023 saaze-mobility -> /home/klm/php/saaze-mobility/
lrwxrwxrwx  1 klm  klm    28 Nov 11  2024 saaze-myrawest -> /home/klm/php/saaze-myrawest/
lrwxrwxrwx  1 klm  klm    29 Aug 14  2023 saaze-nukeklaus -> /home/klm/php/saaze-nukeklaus/
lrwxrwxrwx  1 klm  klm    28 Aug 14  2023 saaze-panorama -> /home/klm/php/saaze-panorama/
lrwxrwxrwx  1 klm  klm    31 Aug 14  2023 saaze-paternoster -> /home/klm/php/saaze-paternoster/
lrwxrwxrwx  1 klm  klm    27 Aug 14  2023 saaze-vonhoff -> /home/klm/php/saaze-vonhoff/
lrwxrwxrwx  1 klm  klm    25 Mar  7  2024 saaze-wendt -> /home/klm/php/saaze-wendt/
lrwxrwxrwx  1 klm  klm    22 Aug 14  2023 sndsaaze -> /home/klm/php/sndsaaze/

5. Problem statement. I received the following e-mail from Ahrefs:

The load time was larger than five seconds:

That's quite alarming.

Ahrefs is a valuable commercial offering to evaluate your web presence with regard to:

1. backlinks
2. broken backlinks
3. site audits
4. outgoing links
5. performance
6. and many more

They provide a free tier for hobbyists. That's what I use and find very helpful. Ahrefs is particularly remarkable as they scan your website more frequently than Google!

6. OpCache trickery. In return in php.ini I enlarged from 256M

opcache.memory_consumption=512

I also activated in PHP-FPM's configuration file php-fpm.d/www.conf the slowlog option:

slowlog = /var/log/nginx/$pool.log.slow
request_slowlog_timeout = 1

And, alas, this produced log entries like so:

[19-Jul-2025 13:52:45]  [pool www] pid 38567
script_filename = /srv/http/index.php
[0x00007fed1f813100] run() /srv/http/index.php:47

[19-Jul-2025 13:52:58]  [pool www] pid 38568
script_filename = /srv/http/index.php
[0x00007fed1f813100] run() /srv/http/index.php:47

[19-Jul-2025 21:09:18]  [pool www] pid 52660
script_filename = /srv/http/index.php
[0x00007fed1f813100] run() /srv/http/index.php:47

Similar messages in PHP-FPM log:

Jul 19 11:45:30 ryzen systemd[1]: Started The PHP FastCGI Process Manager.
Jul 19 13:52:45 ryzen php-fpm[38565]: [WARNING] [pool www] child 38567, script '/srv/http/index.php' (request: "GET /index.php?blog/2025/07-14-stability-mountains-for-bdf6") executing too slow (1.067383 sec), logging
Jul 19 13:52:45 ryzen php-fpm[38565]: [NOTICE] child 38567 stopped for tracing
Jul 19 13:52:45 ryzen php-fpm[38565]: [NOTICE] about to trace 38567
Jul 19 13:52:45 ryzen php-fpm[38565]: [NOTICE] finished trace of 38567
Jul 19 13:52:58 ryzen php-fpm[38565]: [WARNING] [pool www] child 38568, script '/srv/http/index.php' (request: "GET /index.php?blog/2025/07-14-stability-mountains-for-tendler7") executing too slow (1.160562 sec), logging
Jul 19 13:52:58 ryzen php-fpm[38565]: [NOTICE] child 38568 stopped for tracing
Jul 19 13:52:58 ryzen php-fpm[38565]: [NOTICE] about to trace 38568
Jul 19 13:52:58 ryzen php-fpm[38565]: [NOTICE] finished trace of 38568

Jul 19 21:09:18 ryzen php-fpm[38565]: [WARNING] [pool www] child 52660, script '/srv/http/index.php' (request: "GET /index.php?feed.xml") executing too slow (1.209205 sec), logging
Jul 19 21:09:18 ryzen php-fpm[38565]: [NOTICE] child 52660 stopped for tracing
Jul 19 21:09:18 ryzen php-fpm[38565]: [NOTICE] about to trace 52660
Jul 19 21:09:18 ryzen php-fpm[38565]: [NOTICE] finished trace of 52660

Jul 20 04:17:53 ryzen php-fpm[38565]: [WARNING] [pool www] child 52660, script '/srv/http/index.php' (request: "GET /index.php?wendt/sitemap.html") executing too slow (1.013112 sec), logging
Jul 20 04:17:53 ryzen php-fpm[38565]: [NOTICE] child 52660 stopped for tracing
Jul 20 04:17:53 ryzen php-fpm[38565]: [NOTICE] about to trace 52660
Jul 20 04:17:53 ryzen php-fpm[38565]: [NOTICE] finished trace of 52660

This was due to the following bots reading the blog:

147.135.128.94|19/Jul/2025:13:52:36 +0200|200|698|GET /robots.txt HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:52:37 +0200|200|106356|GET /blog/2025/07-14-stability-mountains-for-bdf3 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:52:40 +0200|200|137803|GET /blog/2025/07-14-stability-mountains-for-bdf4 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:52:41 +0200|200|162942|GET /blog/2025/07-14-stability-mountains-for-bdf5 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:52:45 +0200|200|189812|GET /blog/2025/07-14-stability-mountains-for-bdf6 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:52:47 +0200|200|94930|GET /blog/2025/07-14-stability-mountains-for-tendler3 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:52:49 +0200|200|133534|GET /blog/2025/07-14-stability-mountains-for-tendler4 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:52:51 +0200|200|163925|GET /blog/2025/07-14-stability-mountains-for-tendler5 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:52:54 +0200|200|186668|GET /blog/2025/07-14-stability-mountains-for-tendler6 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:52:58 +0200|200|214906|GET /blog/2025/07-14-stability-mountains-for-tendler7 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|
147.135.128.94|19/Jul/2025:13:53:00 +0200|200|109667|GET /blog/2025/07-14-stability-mountains-for-tischer3 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|klm.l5.ca:80|

17.241.75.159|13/Jul/2025:21:09:13 +0200|200|14206|GET /blog/2013/04-27-brian-koberlein-on-google-astronomy-blog HTTP/1.1|-|Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Safari/605.1.15 (Applebot/0.1; +http://www.apple.com/go/applebot)|klm.us.to:80|
184.73.68.20|15/Jul/2025:21:09:10 +0200|200|22987|GET /blog/2013/09-12-dramatic-faster-sorting-in-linux-using-nsort HTTP/1.1|-|Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36|149.172.93.57:443|on
54.157.84.74|15/Jul/2025:21:09:12 +0200|200|1331|GET /jpilot/blog/1999-05-23-this-site-goes-live HTTP/1.1|-|Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36|klm.ddns.net:443|on
34.227.234.246|15/Jul/2025:21:09:14 +0200|200|17473|GET /blog/2023/06-27-performance-remarks-on-publicomag-website HTTP/1.1|-|Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36|149.172.93.57:443|on
18.205.91.101|15/Jul/2025:21:09:17 +0200|200|14573|GET /music/2024/01-12-music-from-ricardo-castro HTTP/1.1|-|Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36|eklausmeier.mywire.org:443|on
3.208.146.193|15/Jul/2025:21:09:18 +0200|200|1419|GET /jpilot/blog/2021-04-02-fixed-bugs-and-crashes HTTP/1.1|-|Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36|149.172.93.57:443|on
23.23.180.225|16/Jul/2025:21:09:18 +0200|200|14201|GET /blog/2017 HTTP/1.1|-|Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.36|klm.ix.tc:80|
194.233.171.60|17/Jul/2025:21:09:16 +0200|200|2184498|GET /feed.xml HTTP/2.0|-|Mozilla/5.0 (compatible; Miniflux/v2.2.10; +https://miniflux.app)|eklausmeier.goip.de:443|on
65.21.149.1|18/Jul/2025:21:09:16 +0200|200|2109321|GET /feed.xml HTTP/2.0|-|Mozilla/5.0 (compatible; Miniflux/v2.2.10; +https://miniflux.app)|eklausmeier.goip.de:443|on
80.71.159.94|19/Jul/2025:21:09:16 +0200|200|2109370|GET /feed.xml HTTP/2.0|-|Mozilla/5.0 (compatible; Miniflux/v2.2.10; +https://miniflux.app)|eklausmeier.goip.de:443|on

135.181.79.106|20/Jul/2025:04:17:51 +0200|200|214928|GET /blog/2025/07-14-stability-mountains-for-tendler7 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|eklausmeier.mywire.org:443|on
135.181.79.106|20/Jul/2025:04:17:54 +0200|200|109676|GET /blog/2025/07-14-stability-mountains-for-tischer3 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|eklausmeier.mywire.org:443|on
135.181.79.106|20/Jul/2025:04:17:56 +0200|200|131549|GET /blog/2025/07-14-stability-mountains-for-tischer4 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|eklausmeier.mywire.org:443|on
135.181.79.106|20/Jul/2025:04:17:59 +0200|200|160833|GET /blog/2025/07-14-stability-mountains-for-tischer5 HTTP/1.1|-|Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)|eklausmeier.mywire.org:443|on

This shows that quick successions of reads can trigger a slow response.

So, despite the OpCache trickery we have sporadic slow response times.

7. Back to static files. Above results lead to the conclusion that the dynamic mode of Simplified Saaze is not performant enough, when there are many large files involved. The 17 new blog posts about stability mountains triggered this. But any other significant increase in data would have done the same. So, my various static blogs are converted to static.

B. Deployment scripts for static sites

Below are the very simple shell scripts to deploy each of the above static sites. The time command included in those scripts is only for measuring how long it takes.

1. My blog.

#!/bin/bash
# Automate the steps to deploy content from Saaze to my eklausmeier.goip.de blog

cd /home/klm/php/sndsaaze
time php saaze -mortb /tmp/build

cd /tmp/build
time pagefind -s . --exclude-selectors aside --exclude-selectors footer --force-language=en
ln -s blog/index.html

cd /srv/http
rm -rf oldblogs/klmblog/
mkdir -p oldblogs/klmblog
mv 404.html aux blog feed.xml gallery index.html music pagefind sitemap.html sitemap.xml oldblogs/klmblog/

cd /tmp/build
mv 404.html aux blog feed.xml gallery index.html music pagefind sitemap.html sitemap.xml /srv/http/

2. J-Pilot.

#!/bin/bash
# Deploy J-Pilot website

cd /home/klm/php/saaze-jpilot
time RBASE="/jpilot" php saaze -morb /tmp/build

cd /tmp/build
cp -pr /home/klm/php/saaze-jpilot/public/jpilot.css .
cp -pr /home/klm/php/saaze-jpilot/public/img .
cp -pr /home/klm/php/saaze-jpilot/public/pkg .
rm index.html
ln -s blog/index.html

cd /srv/http/
rm -rf oldblogs/jpilot/
mv jpilot/ oldblogs/
mv /tmp/build/ jpilot

3. Koehntopp.

#!/bin/bash
# Deploy Kristian Koehntopp's blog

cd /home/klm/php/saaze-koehntopp/
time RBASE="/koehntopp" php saaze -mrtb /tmp/build
cd /tmp/build
time pagefind -s . --exclude-selectors aside --exclude-selectors footer --force-language=en

cd /srv/http/
rm -rf oldblogs/koehntopp/
mv koehntopp/ oldblogs/
mv /tmp/build koehntopp

4. Lemire.

#!/bin/bash
# Deploy Daniel Lemire's blog, assuming static build is in /tmp/build

cd /home/klm/php/saaze-lemire/
time RBASE="/lemire" php saaze -rmb /tmp/build

cd /tmp/build
time pagefind -s . --exclude-selectors aside --exclude-selectors footer --force-language=en
cp -pr /home/klm/php/saaze-lemire/public/jscss .
ln -s blog/index.html

cd /srv/http
rm -rf oldblogs/lemire/
mkdir -p oldblogs/lemire
mv lemire oldblogs/

mv /tmp/build/ /srv/http/lemire

5. Mobility.

#!/bin/bash
# Deploy Mobility website

cd /home/klm/php/saaze-mobility
time RBASE="/mobility" php saaze -morb /tmp/build

cd /tmp/build
cp -pr /home/klm/php/saaze-mobility/public/img .

cd /srv/http/
rm -rf oldblogs/mobility/
mv mobility/ oldblogs/
mv /tmp/build/ mobility

6. Myra West.

#!/bin/bash
# Deploy Myra West's blog

cd /home/klm/php/saaze-myrawest
time RBASE="/myrawest" php saaze -morb /tmp/build

cd /tmp/build
time pagefind -s . --exclude-selectors aside --exclude-selectors footer --force-language=en
cp -pr /home/klm/php/saaze-myrawest/public/img .

cd /srv/http/
rm -rf oldblogs/myrawest/
mv myrawest/ oldblogs/
mv /tmp/build/ myrawest

7. Nukeklaus.

#!/bin/bash
# Deploy nukeklaus's blog: build directory is in /tmp/build (for speed reasons)

cd /home/klm/php/saaze-nukeklaus/
time RBASE="/nukeklaus" php saaze -mortb /tmp/build

cd /tmp/build
time pagefind -s . --exclude-selectors aside --exclude-selectors footer --force-language=de
cp -pr /home/klm/php/saaze-nukeklaus/public/img/ .

cd /srv/http
rm -rf oldblogs/nukeklaus/
mv nukeklaus/ oldblogs/
mv /tmp/build/ /srv/http/nukeklaus

8. Panorama.

#!/bin/bash
# Deploy Panorama's restaurant blog

cd /home/klm/php/saaze-panorama
time RBASE="/panorama" php saaze -morb /tmp/build

cd /tmp/build
cp -pr /home/klm/php/saaze-panorama/public/img .

cd /srv/http
rm -rf oldblogs/panorama
mv panorama/ oldblogs/
mv /tmp/build/ panorama

9. Paternoster.

#!/bin/bash
# Deploy Paternoster's blog

cd /home/klm/php/saaze-paternoster
time RBASE="/paternoster" php saaze -morb /tmp/build

cd /tmp/build
cp -pr /home/klm/php/saaze-paternoster/public/img .
cp -pr /home/klm/php/saaze-paternoster/public/paternoster.css .
ln -s posts/index.html

cd /srv/http
rm -rf oldblogs/paternoster
mv paternoster/ oldblogs/
mv /tmp/build/ /srv/http/paternoster

10. Saaze-Example.

#!/bin/bash
# Deploy Saaze-Example

cd /home/klm/php/saaze-example
time RBASE="/saaze-example" php saaze -b /tmp/build

cd /tmp/build
rm index.html
ln -s blog/index.html
cp -p /home/klm/php/saaze-example/public/blogklm.css .

cd /srv/http/
rm -rf oldblogs/saaze-example/
mv saaze-example/ oldblogs/

mv /tmp/build/ saaze-example

11. Vonhoff.

#!/bin/bash
# Deploy Dr. Rolf Vonhoff's blog: build directory is in /tmp/build (for speed reasons)

cd /home/klm/php/saaze-vonhoff/
time RBASE="/vonhoff" php saaze -b /tmp/build
cp -pr public/img/ /tmp/build/

cd /srv/http
rm -rf oldblogs/vonhoff/
mv vonhoff/ oldblogs/
mv /tmp/build/ vonhoff

12. Wendt.

#!/bin/bash
# Deploy Wendt

cd /home/klm/php/saaze-wendt
time RBASE="/wendt" php saaze -morb /tmp/build

cd /tmp/build
time pagefind -s . --exclude-selectors aside --exclude-selectors footer --force-language=de

cd /srv/http/
rm -rf oldblogs/wendt/
mv wendt/ oldblogs/
mv /tmp/build/ wendt

13. All munged together.

#!/bin/bash
# Do all the blog deployments

time blogdeploy
time blogjpilotDeploy
time blogkoehntoppDeploy
time bloglemireDeploy
time blogmobilityDeploy
time blogmyrawestDeploy
time blognukeklausDeploy
time blogpanoramaDeploy
time blogpaternosterDeploy
time blogsaazeexampleDeploy
time blogvonhoffDeploy
time blogwendtDeploy

C. Running deployment scripts

Running the munged together scripts.

Runtime environment is Arch Linux as depicted in below table.

1. My blog.

$ time blogAllDeploy | tee /tmp/blogAllDeploy.log
Building static site in /tmp/build...
        execute(): filePath=./content/error.yml, nSIentries=0, totalPages=0, entries_per_page=20
        execute(): filePath=./content/music.yml, nSIentries=89, totalPages=5, entries_per_page=20
        execute(): filePath=./content/gallery.yml, nSIentries=16, totalPages=1, entries_per_page=20
        execute(): filePath=./content/blog.yml, nSIentries=528, totalPages=27, entries_per_page=20
        execute(): filePath=./content/aux.yml, nSIentries=8, totalPages=1, entries_per_page=20
Finished creating 5 collections, 4 with index, and 676 entries (0.69 secs / 191.97MB)
#collections=5, parseEntry=0.0310/676-5, md2html=0.1314, toHtml=0.1347/676, renderEntry=0.1374/676, renderCollection=0.0040/38, content=676/0

real    0m0.718s
user    0m0.532s
sys     0m0.184s

Running Pagefind v1.3.0
Running from: "/tmp/build"
Source:       ""
Output:       "pagefind"

[Walking source directory]
Found 715 files matching **/*.{html}

[Parsing files]
Did not find a data-pagefind-body element on the site.
↳ Indexing all <body> elements on the site.

[Reading languages]
Discovered 1 language: en

[Building search indexes]
Total:
  Indexed 1 language
  Indexed 715 pages
  Indexed 51664 words
  Indexed 0 filters
  Indexed 0 sorts

Finished in 3.101 seconds

real    0m3.146s
user    0m2.731s
sys     0m0.552s

real    0m4.119s
user    0m3.274s
sys     0m0.977s

2. J-Pilot.

Building static site in /tmp/build...
        execute(): filePath=/home/klm/php/saaze-jpilot/content/pages.yml, nSIentries=0, totalPages=0, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-jpilot/content/doc.yml, nSIentries=10, totalPages=1, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-jpilot/content/blog.yml, nSIentries=18, totalPages=1, entries_per_page=20
Finished creating 3 collections, 3 with index, and 29 entries (0.01 secs / 1.2MB)
#collections=3, parseEntry=0.0005/29-3, md2html=0.0008, toHtml=0.0006/29, renderEntry=0.0008/29, renderCollection=0.0002/5, content=29/0

real    0m0.033s
user    0m0.018s
sys     0m0.014s

real    0m0.051s
user    0m0.022s
sys     0m0.029s

3. Koehntopp.

Building static site in /tmp/build...
        execute(): filePath=/home/klm/php/saaze-koehntopp/content/aux.yml, nSIentries=3, totalPages=1, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-koehntopp/content/posts.yml, nSIentries=964, totalPages=49, entries_per_page=20
Finished creating 2 collections, 2 with index, and 967 entries (0.16 secs / 23.82MB)
#collections=2, parseEntry=0.0187/967-2, md2html=0.0267, toHtml=0.0142/967, renderEntry=0.0248/967, renderCollection=0.0098/52, content=967/0

real    0m0.186s
user    0m0.133s
sys     0m0.052s

Running Pagefind v1.3.0
Running from: "/tmp/build"
Source:       ""
Output:       "pagefind"

[Walking source directory]
Found 1019 files matching **/*.{html}

[Parsing files]
Did not find a data-pagefind-body element on the site.
↳ Indexing all <body> elements on the site.

[Reading languages]
Discovered 1 language: en

[Building search indexes]
Total:
  Indexed 1 language
  Indexed 1019 pages
  Indexed 58550 words
  Indexed 0 filters
  Indexed 0 sorts

Finished in 4.394 seconds

real    0m4.459s
user    0m3.863s
sys     0m0.738s

real    0m4.880s
user    0m4.010s
sys     0m1.006s

4. Lemire.

Building static site in /tmp/build...
        execute(): filePath=/home/klm/php/saaze-lemire/content/blog.yml, nSIentries=2771, totalPages=139, entries_per_page=20
Finished creating 1 collections, 1 with index, and 4483 entries (0.52 secs / 95.75MB)
#collections=1, parseEntry=0.0673/4483-1, md2html=0.0904, toHtml=0.0576/4483, renderEntry=0.0563/4483, renderCollection=0.0128/140, content=4483/0

real    0m0.552s
user    0m0.358s
sys     0m0.190s

Running Pagefind v1.3.0
Running from: "/tmp/build"
Source:       ""
Output:       "pagefind"

[Walking source directory]
Found 4623 files matching **/*.{html}

[Parsing files]
Did not find a data-pagefind-body element on the site.
↳ Indexing all <body> elements on the site.

[Reading languages]
Discovered 1 language: en

[Building search indexes]
Total:
  Indexed 1 language
  Indexed 4623 pages
  Indexed 60265 words
  Indexed 0 filters
  Indexed 0 sorts

Finished in 11.176 seconds

real    0m11.351s
user    0m10.005s
sys     0m1.936s
        real 12.96s
        user 10.42s
        sys 0
        swapped 0
        total space 0

5. Mobility.

Building static site in /tmp/build...
        execute(): filePath=/home/klm/php/saaze-mobility/content/auxil.yml, nSIentries=21, totalPages=2, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-mobility/content/blog.yml, nSIentries=9, totalPages=1, entries_per_page=20
Finished creating 2 collections, 1 with index, and 31 entries (0.01 secs / 1.41MB)
#collections=2, parseEntry=0.0006/31-2, md2html=0.0008, toHtml=0.0014/31, renderEntry=0.0010/31, renderCollection=0.0002/2, content=31/0

real    0m0.033s
user    0m0.018s
sys     0m0.015s

real    0m0.068s
user    0m0.019s
sys     0m0.049s

6. Myra West.

Building static site in /tmp/build...
        execute(): filePath=./content/blog.yml, nSIentries=40, totalPages=2, entries_per_page=20
Finished creating 1 collections, 1 with index, and 41 entries (0.01 secs / 3.07MB)
#collections=1, parseEntry=0.0009/41-1, md2html=0.0016, toHtml=0.0017/41, renderEntry=0.0018/41, renderCollection=0.0002/3, content=41/0

real    0m0.036s
user    0m0.023s
sys     0m0.013s

Running Pagefind v1.3.0
Running from: "/tmp/build"
Source:       ""
Output:       "pagefind"

[Walking source directory]
Found 45 files matching **/*.{html}

[Parsing files]
1 page found without an <html> element.
Pages without an outer <html> element will not be processed by default.
If adding this element is not possible, use the root selector config to target a different root element.
Did not find a data-pagefind-body element on the site.
↳ Indexing all <body> elements on the site.
  * "/sitemap.html" has no <html> element

[Reading languages]
Discovered 1 language: en

[Building search indexes]
Total:
  Indexed 1 language
  Indexed 44 pages
  Indexed 3158 words
  Indexed 0 filters
  Indexed 0 sorts

Finished in 0.236 seconds

real    0m0.244s
user    0m0.212s
sys     0m0.039s

real    0m0.305s
user    0m0.238s
sys     0m0.074s

7. Nukeklaus.

Building static site in /tmp/build...
        execute(): filePath=/home/klm/php/saaze-nukeklaus/content/aux.yml, nSIentries=4, totalPages=1, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-nukeklaus/content/blog.yml, nSIentries=164, totalPages=9, entries_per_page=20
Finished creating 2 collections, 1 with index, and 178 entries (0.05 secs / 11.2MB)
#collections=2, parseEntry=0.0048/178-2, md2html=0.0055, toHtml=0.0063/178, renderEntry=0.0110/178, renderCollection=0.0013/10, content=178/0

real    0m0.079s
user    0m0.055s
sys     0m0.023s

Running Pagefind v1.3.0
Running from: "/tmp/build"
Source:       ""
Output:       "pagefind"

[Walking source directory]
Found 189 files matching **/*.{html}

[Parsing files]
Did not find a data-pagefind-body element on the site.
↳ Indexing all <body> elements on the site.

[Reading languages]
Discovered 1 language: de

[Building search indexes]
Total:
  Indexed 1 language
  Indexed 189 pages
  Indexed 23135 words
  Indexed 0 filters
  Indexed 0 sorts

Finished in 1.556 seconds

real    0m1.578s
user    0m1.370s
sys     0m0.225s

real    0m1.715s
user    0m1.430s
sys     0m0.301s

8. Panorama.

Building static site in /tmp/build...
        execute(): filePath=/home/klm/php/saaze-panorama/content/auxil.yml, nSIentries=2, totalPages=1, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-panorama/content/blog.yml, nSIentries=8, totalPages=1, entries_per_page=20
Finished creating 2 collections, 2 with index, and 10 entries (0.01 secs / 745kB)
#collections=2, parseEntry=0.0002/10-2, md2html=0.0002, toHtml=0.0013/10, renderEntry=0.0006/10, renderCollection=0.0001/4, content=10/0

real    0m0.030s
user    0m0.017s
sys     0m0.013s

real    0m0.068s
user    0m0.021s
sys     0m0.046s

9. Paternoster.

Building static site in /tmp/build...
        execute(): filePath=/home/klm/php/saaze-paternoster/content/aux.yml, nSIentries=3, totalPages=1, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-paternoster/content/posts.yml, nSIentries=210, totalPages=11, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-paternoster/content/notes.yml, nSIentries=470, totalPages=10, entries_per_page=50
        execute(): filePath=/home/klm/php/saaze-paternoster/content/links.yml, nSIentries=249, totalPages=5, entries_per_page=50
Finished creating 4 collections, 4 with index, and 932 entries (0.08 secs / 6.56MB)
#collections=4, parseEntry=0.0149/936-4, md2html=0.0074, toHtml=0.0041/932, renderEntry=0.0113/932, renderCollection=0.0044/31, content=932/0

real    0m0.105s
user    0m0.065s
sys     0m0.040s

real    0m0.241s
user    0m0.073s
sys     0m0.166s

10. Saaze-Example.

Building static site in /srv/http/saaze-example...
        execute(): filePath=/home/klm/php/saaze-example/content/auxil.yml, nSIentries=0, totalPages=0, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-example/content/music.yml, nSIentries=11, totalPages=1, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-example/content/blog.yml, nSIentries=35, totalPages=2, entries_per_page=20
Finished creating 3 collections, 3 with index, and 47 entries (0.01 secs / 882kB)
#collections=3, parseEntry=0.0006/47-3, md2html=0.0003, toHtml=0.0006/47, renderEntry=0.0007/47, renderCollection=0.0005/6, content=47/0

real    0m0.035s
user    0m0.021s
sys     0m0.013s
        real 0.04s
        user 0.02s
        sys 0
        swapped 0
        total space 0

11. Vonhoff.

Building static site in /tmp/build...
        execute(): filePath=/home/klm/php/saaze-vonhoff/content/blog.yml, nSIentries=4, totalPages=1, entries_per_page=20
        execute(): filePath=/home/klm/php/saaze-vonhoff/content/auxil.yml, nSIentries=1, totalPages=1, entries_per_page=20
Finished creating 2 collections, 2 with index, and 5 entries (0.01 secs / 745kB)
#collections=2, parseEntry=0.0001/5-2, md2html=0.0004, toHtml=0.0030/5, renderEntry=0.0004/5, renderCollection=0.0002/4, content=5/0

real    0m0.030s
user    0m0.018s
sys     0m0.012s

real    0m0.043s
user    0m0.019s
sys     0m0.024s

12. Wendt.

Building static site in /tmp/build...
        execute(): filePath=./content/alexander.yml, nSIentries=770, totalPages=39, entries_per_page=20
        execute(): filePath=./content/alte-weise.yml, nSIentries=131, totalPages=7, entries_per_page=20
        execute(): filePath=./content/archi-bechlenberg.yml, nSIentries=5, totalPages=1, entries_per_page=20
        execute(): filePath=./content/bernd-zeller.yml, nSIentries=332, totalPages=17, entries_per_page=20
        execute(): filePath=./content/cora-stephan.yml, nSIentries=1, totalPages=1, entries_per_page=20
        execute(): filePath=./content/david-berger.yml, nSIentries=1, totalPages=1, entries_per_page=20
        execute(): filePath=./content/fake-news.yml, nSIentries=28, totalPages=2, entries_per_page=20
        execute(): filePath=./content/film.yml, nSIentries=1, totalPages=1, entries_per_page=20
        execute(): filePath=./content/hansjoerg-mueller.yml, nSIentries=2, totalPages=1, entries_per_page=20
        execute(): filePath=./content/hausbesuch.yml, nSIentries=2, totalPages=1, entries_per_page=20
        execute(): filePath=./content/joerg-friedrich.yml, nSIentries=2, totalPages=1, entries_per_page=20
        execute(): filePath=./content/mag.yml, nSIentries=1235, totalPages=62, entries_per_page=20
        execute(): filePath=./content/matthias-matussek.yml, nSIentries=1, totalPages=1, entries_per_page=20
        execute(): filePath=./content/medien-kritik.yml, nSIentries=123, totalPages=7, entries_per_page=20
        execute(): filePath=./content/politik-gesellschaft.yml, nSIentries=486, totalPages=25, entries_per_page=20
        execute(): filePath=./content/redaktion.yml, nSIentries=112, totalPages=6, entries_per_page=20
        execute(): filePath=./content/samuel-horn.yml, nSIentries=3, totalPages=1, entries_per_page=20
        execute(): filePath=./content/spreu-weizen.yml, nSIentries=596, totalPages=30, entries_per_page=20
        execute(): filePath=./content/wolfram-ackner.yml, nSIentries=6, totalPages=1, entries_per_page=20
Finished creating 19 collections, 19 with index, and 1248 entries (5.16 secs / 1.82GB)
#collections=19, parseEntry=0.7782/23712-19, md2html=1.2083, toHtml=1.2890/23712, renderEntry=0.1177/1248, renderCollection=0.0420/224, content=23712/0

real    0m5.193s
user    0m4.426s
sys     0m0.734s

Running Pagefind v1.3.0
Running from: "/tmp/build"
Source:       ""
Output:       "pagefind"

[Walking source directory]
Found 1473 files matching **/*.{html}

[Parsing files]
Did not find a data-pagefind-body element on the site.
↳ Indexing all <body> elements on the site.

[Reading languages]
Discovered 1 language: de

[Building search indexes]
Total:
  Indexed 1 language
  Indexed 1473 pages
  Indexed 133262 words
  Indexed 0 filters
  Indexed 0 sorts

Finished in 18.948 seconds

real    0m19.155s
user    0m17.431s
sys     0m1.890s

real    0m24.780s
user    0m21.878s
sys     0m3.027s

The total runtime.

        real 49.78s
        user 41.82s
        sys 0
        swapped 0
        total space 0

        real 49.77s
        user 0.00s
        sys 0
        swapped 0
        total space 0

D. NGINX configuration

All the rewrite rules, which were in place to generate HTML on the fly, can now be removed. I added one rewrite rule to not to redirect to the URL with a slash appended. This spares one roundtrip due to a HTTP 301 return code.

# NGINX configuration for chieftec
# Elmar Klausmeier, 22-Aug-2023
# Elmar Klausmeier, 21-Jul-2025

#user http;
worker_processes  1;

error_log  /var/log/nginx/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

load_module /usr/lib/nginx/modules/ngx_http_brotli_filter_module.so;
load_module /usr/lib/nginx/modules/ngx_http_brotli_static_module.so;


events {
    worker_connections  1024;
}


http {
    root   /srv/http;
    index  index.html;
    client_max_body_size 15900M;

    http2 on;
    gzip  on;
    brotli on;
    brotli_comp_level 10;
    brotli_types application/xml image/svg+xml text/css text/csv text/javascript text/markdown text/plain text/vcard text/xml application/rss+xml;
    gzip_types application/xml image/svg+xml text/css text/csv text/javascript text/markdown text/plain text/vcard text/xml application/rss+xml;

    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';
    log_format hiawatha_format '$remote_addr|$time_local|$status|$bytes_sent|$request|$http_referer|$http_user_agent|$host:$server_port|$https';

    access_log  /var/log/nginx/access.log hiawatha_format;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    http3 on;
    http3_hq on;
    types_hash_max_size 4096;

    server {
        listen       80;
        server_name  localhost;

    #  Umkehrung von https://timmehosting.de/blog/nginx-trailing-slash-zu-urls-hinzufuegen-rewrite-rule
    rewrite "^/(aux|blog|music|gallery|jpilot|koehntopp|lemire|mobility|myrawest|nukeklaus|panorama|paternoster|saaze-example|vonhoff|wendt)(/*|[^\.]*[^/])$"  "/$1/$2/index.html" last;

    #charset koi8-r;
        #error_page  404              /rewrite/sndsaaze/public/index.php?/404.html;

        # redirect server error pages to the static page /50x.html
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /usr/share/nginx/html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        location ~ \.(jpg|jpeg|png|webp|mp4|pdf)$ {
            add_header Cache-Control "public, max-age=7776000";
    }

        location ~ \.php$ {
            try_files $fastcgi_script_name =404;

            # default fastcgi_params
            include fastcgi_params;

            # fastcgi settings
            fastcgi_pass			unix:/run/php-fpm/php-fpm.sock;
        #fastcgi_index			index.php;
            fastcgi_buffers			8 16k;
            fastcgi_buffer_size		32k;

            # fastcgi params
            fastcgi_param DOCUMENT_ROOT	$realpath_root;
            fastcgi_param SCRIPT_FILENAME	$realpath_root$fastcgi_script_name;
        }

        location ~ ^/ttyd(.*)$ {
            proxy_http_version 1.1;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
        proxy_pass http://eklausmeier.goip.de:7681/$1;
        #proxy_pass http://84.119.108.23:7681/$1;
        }
        location ~ ^/nucttyd(.*)$ {
            proxy_http_version 1.1;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_pass http://192.168.0.24:7681/$1;
        }
    }


    # HTTPS server
    #
    server {
        listen       443 quic;
    listen       443 ssl;
        server_name  localhost;

        ssl_certificate      /etc/letsencrypt/live/eklausmeier.goip.de-0002/fullchain.pem;
        ssl_certificate_key  /etc/letsencrypt/live/eklausmeier.goip.de-0002/privkey.pem;

    # From https://blog.qualys.com/product-tech/2013/08/05/configuring-apache-nginx-and-openssl-for-forward-secrecy
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
        ssl_prefer_server_ciphers on;
        ssl_ciphers "EECDH+ECDSA+AESGCM EECDH+aRSA+AESGCM EECDH+ECDSA+SHA384 EECDH+ECDSA+SHA256 EECDH+aRSA+SHA384 EECDH+aRSA+SHA256 EECDH+aRSA+RC4 EECDH EDH+aRSA RC4 !aNULL !eNULL !LOW !3DES !MD5 !EXP !PSK !SRP !DSS";

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

        #location / {
            # used to advertise the availability of HTTP/3
            add_header Alt-Svc 'h3=":443"; ma=86400';
        #}

    # Umkehrung von  https://timmehosting.de/blog/nginx-trailing-slash-zu-urls-hinzufuegen-rewrite-rule
    rewrite "^/(aux|blog|music|gallery|jpilot|koehntopp|lemire|mobility|myrawest|nukeklaus|panorama|paternoster|saaze-example|vonhoff|wendt)(/*|[^\.]*[^/])$"  "/$1/$2/index.html" last;

        # redirect server error pages to the static page /50x.html
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /usr/share/nginx/html;
        }

        location ~ \.(jpg|jpeg|png|webp|mp4|pdf)$ {
            add_header Cache-Control "public, max-age=7776000";
    }

        location ~ \.php$ {
            try_files $fastcgi_script_name =404;

            # default fastcgi_params
            include fastcgi_params;

            # fastcgi settings
            fastcgi_pass			unix:/run/php-fpm/php-fpm.sock;
        #fastcgi_index			index.php;
            fastcgi_buffers			8 16k;
            fastcgi_buffer_size		32k;

            # fastcgi params
            fastcgi_param DOCUMENT_ROOT	$realpath_root;
            fastcgi_param SCRIPT_FILENAME	$realpath_root$fastcgi_script_name;
        }

        location ~ ^/ttyd(.*)$ {
            proxy_http_version 1.1;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_pass http://eklausmeier.goip.de:7681/$1;
        }
        location ~ ^/nucttyd(.*)$ {
            proxy_http_version 1.1;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-Proto $scheme;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_pass http://192.168.0.24:7681/$1;
        }
    }

}

Compare this with the "previous" model ASRock A300M with Ryzen 3400G, which I bought five years ago and costed twice as much. More so, the 3400G only has half the cores of the 5700G.

PCGH wrote:

CPU-Monopol: AMD übernimmt Mindfactory nahezu vollständig

Die aktuellen CPU-Verkaufszahlen des deutschen Online-Händlers Mindfactory, welche wie gewohnt von TechEpiphany über X - vormals Twitter - veröffentlicht wurden, verdeutlichen die Dominanz von AMDs Ryzen-Prozessoren. Im DIY-Geschäft beläuft sich der CPU-Marktanteil von AMD bei Mindfactory auf mehr als 95 Prozent, während rund 97 Prozent der CPU-Umsätze auf Zen-Prozessoren entfallen. Damit erreicht AMDs "CPU-Monopol" auf Mindfactory jetzt einen neuen Rekordstand.

1. Hardware setup

On 12-Jul-2025 the packets arrived.

The AMD Ryzen 5700G CPU.

Mounted the CPU on the board.

Inserted SODIMM modules.

Inserted harddrive and CPU fan.

Booting into BIOS.

Comparison to typical smartphone standing next to the entire ASRock.

With a wattmeter I checked the power consumption: it is 9-10 Watts in idle mode. That's exactly what was expected.

2. Installation of Arch Linux

1. Installation. I followed my own blog posts:

1. Copy Arch Linux to SSD
2. Setting-Up LUKS/dm-crypt for External USB-Drive
3. Configure boot settings in UEFI

The hard drive is partitioned using gparted into 750MB FAT32 (vfat) and the rest for LUKS, which hosts ext4.

UEFI was setup using efibootmgr. UEFI shell is /usr/share/edk2-shell/x64/Shell_Full.efi.

Forgetting to sym-link sbin results in:

1. Booting via ssh. To boot the machine from remote use the following HOOKS line in mkinitcpio.conf:

HOOKS="base udev block keymap keyboard autodetect consolefont modconf netconf dropbear encryptssh filesystems fsck"

Modules netconf is in Arch Linux package mkinitcpio-netconf. encryptssh is contained in package mkinitcpio-utils.

2. xdm annoyances. File initramfs-linux.img needs amdgpu and radeon drivers included via MODULES in mkinitcpio.conf.

MODULES=(amdgpu radeon)

After that run mkinitcpio -p linux. Without that xdm would not start automatically via systemd.

I would normally set keyboard and deadkey handling directly in /etc/X11/xorg.conf.d/00-keyboard.conf:

Section "InputClass"
        Identifier "system-keyboard"
        MatchIsKeyboard "on"
        Option "XkbLayout" "de"
        Option "XkbVariant" "nodeadkeys"
EndSection

In this case I used the setxkbmap command in .xinitrc:

setxkbmap -layout de -variant nodeadkeys

In doing so, every user can individually set his language preferences.

Install glxgears via

pacman -S mesa-utils

3. Disable pipewire. I noticed that pulseaudio and pipewire in combination to not work together. So I disabled pipewire.

systemctl --global mask pipewire
systemctl --global mask pipewire.socket

Unfortunately, pipewire cannot be easily uninstalled.

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas
3. Stability Regions for Mihelčić's Formulas
4. Stability Regions for Donelson and Hansen Formulas

Below is the output of:

rm /tmp/x9; for i in 1 2 3 4 5 6; do stabregion -D$i -o3 -r30 >> /tmp/x9; done

Honestly, all charts look weird.

Donelson & Hansen 1:

Donelson & Hansen 2:

Donelson & Hansen 3:

Donelson & Hansen 4:

Donelson & Hansen 5:

Donelson & Hansen 6:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas
3. Stability Regions for Mihelčić's Formulas
4. Stability Regions for Donelson and Hansen Formulas

Below is the output of:

stabregion -m4 -o3 -r50
stabregion -m5 -o3 -r30
stabregion -m6 -o3 -r26
stabregion -m7 -o3 -r30

Mihelcic4:

Mihelcic5:

Mihelcic6:

Mihelcic7:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -s8 -o3 -r600

Tischer8:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -s7 -o3 -r600

Tischer7:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -s6 -o3 -r600

Tischer6:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -s5 -o3 -r600

Tischer5:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -s4 -o3 -r600

Tischer4:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -s3 -o3 -r600

Tischer3:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -t7 -o3 -r600

Tendler7:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -t6 -o3 -r600

Tendler6:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -t5 -o3 -r600

Tendler5:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -t4 -o3 -r600

Tendler4:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -t3 -o3 -r600

Tendler3:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -b6 -o3 -r600

BDF6:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -b5 -o3 -r600

BDF5:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -b4 -o3 -r600

BDF4:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -b3 -o3 -r600

BDF3:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -b2 -o3 -r600

BDF2:

This is in continuation of:

1. Stability Regions for BDF and Tendler's Formulas
2. Stability Regions for Tischer's Formulas

Below is the output of:

stabregion -b1 -o3 -r600

BDF1:

Their formulas have the following properties.

typedef struct {
    const char *name;
    const int p;	// order (for information only)
    const int k;	// number of start steps, 2*(k+l) = number of rows of a[]
    const int l;	// cycle length, i.e., column count of a[]
    double *a;	// transpose of A_i and B_i matrices in a single matrix
} formula_t;

formula_t F[] = {
    . . .
    {
        "DonelsonHansen1", 5, 3, 3,	// name, p, k, l
        (double[]){
        0, 0, 0,
        -57, 1083, 0,
        24, -456, 0,
        33, -1347, -57,
        0, 720, 24,
        0, 0, 33,
        // --------
        -1, 0, 0,
        24, -350, 0,
        57, -1347, -1,
        10, 456, 24,
        0, 251, 57,
        0, 0, 10 }
    },
    {
        "DonelsonHansen2", 6, 3, 3,	// name, p, k, l
        (double[]){
        -11, 0, 0,
        -27, 188, 0,
        27, -36, 25,
        11, -252, -63,
        0, 100, -9,
        0, 0, 47,
        // --------
        3, 0, 0,
        27, -60, 0,
        27, -252, -9,
        3, 36, -9,
        0, 36, 63,
        0, 0, 15 }
    },
    {
        "DonelsonHansen3", 6, 3, 3,	// name, p, k, l
        (double[]){
        0, 0, 0,
        -57, 136, 0,
        24, -117, -283,
        33, -144, -306,
        0, 125, 531,
        0, 0, 58,
        // --------
        -1, 0, 0,
        24, -45, 0,
        57, -144, 84,
        10, 117, 531,
        0, 42, 306,
        0, 0, 9 }
    },
    {
        "DonelsonHansen4", 5, 3, 2,	// name, p, k, l
        (double[]){
        0, 0,
        -57, 31,
        24, -12,
        33, -39,
        0, 20,
        // --------
        -1, 0,
        24, -10,
        57, -39,
        10, 12,
        0, 7 }
    },
    {
        "DonelsonHansen5", 7, 4, 4,	// name, p, k, l
        (double[]){
            0,      0,      0,      0,
        -1360,  13409,      0,      0,
        -1350,  30384,   3653,      0,
         2160, -55026, -22752,   4550,
          550,   2224, -45792,  14160,
            0,   9009,  49888, -14850,
            0,      0,  15003,  -5360,
            0,      0,      0,   1500,
        // ---------------------------
           -9,      0,      0,      0,
          456,  -3585,      0,      0,
         2376, -32904,  -1182,      0,
         1656, -19008,   1440,  -1191,
          141,  16008,  49032, -12456,
            0,   2529,  42144, -13176,
            0,      0,   3906,    744,
            0,      0,      0,    459 }
    },
    {
        "DonelsonHansen6", 8, 4, 4,	// name, p, k, l
        (double[]){
            0,      0,         0,         0,
        -1360,   4603,         0,         0,
        -1350,   1008,  -3455657,         0,
         2160, -28242, -28102272,     59160,
          550,  15728,  -5942052,    175440,
            0,   6903,  31623488,   -201690,
            0,      0,   5876493,    -55920,
            0,      0,         0,     23010,
        // ---------------------------------
           -9,      0,         0,         0,
          456,  -1293,         0,         0,
         2376,  -8136,    789744,         0,
         1656,   9936,  15276816,    -15543,
          141,  16968,  40314888,   -159048,
            0,   1845,  20558640,   -156168,
            0,      0,   1449972,     20232,
            0,      0,         0,      6867 }
    }
}

1. Stability regions. None of the formulas is A(α)-stable or A-stable. In particular, the graph for p=2 looks weird.

2. Error constants per stage. The C program stabregion performs a check on the order of each stage. Below are the results of these checks for the Donelson & Hansen methods.

DonelsonHansen1, p=5, k=3, l=3
           0.0000       0.0000       0.0000
         -57.0000    1083.0000       0.0000
          24.0000    -456.0000       0.0000
          33.0000   -1347.0000     -57.0000
           0.0000     720.0000      24.0000
           0.0000       0.0000      33.0000
          -1.0000       0.0000       0.0000
          24.0000    -350.0000       0.0000
          57.0000   -1347.0000      -1.0000
          10.0000     456.0000      24.0000
           0.0000     251.0000      57.0000
           0.0000       0.0000      10.0000
rho_0	           0.000000000           0.000000000           0.000000000
rho_1	           0.000000000           0.000000000           0.000000000
rho_2	           0.000000000           0.000000000           0.000000000
rho_3	           0.000000000           0.000000000           0.000000000
rho_4	           0.000000000           0.000000000           0.000000000
rho_5	           0.000000000           0.000000000           0.000000000
rho_6	        -132.000000000       -7212.000000000        -132.000000000	<-----
DonelsonHansen2, p=6, k=3, l=3
         -11.0000       0.0000       0.0000
         -27.0000     188.0000       0.0000
          27.0000     -36.0000      25.0000
          11.0000    -252.0000     -63.0000
           0.0000     100.0000      -9.0000
           0.0000       0.0000      47.0000
           3.0000       0.0000       0.0000
          27.0000     -60.0000       0.0000
          27.0000    -252.0000      -9.0000
           3.0000      36.0000      -9.0000
           0.0000      36.0000      63.0000
           0.0000       0.0000      15.0000
rho_0	           0.000000000           0.000000000           0.000000000
rho_1	           0.000000000           0.000000000           0.000000000
rho_2	           0.000000000           0.000000000           0.000000000
rho_3	           0.000000000           0.000000000           0.000000000
rho_4	           0.000000000           0.000000000           0.000000000
rho_5	           0.000000000           0.000000000           0.000000000
rho_6	           0.000000000       -1152.000000000        -288.000000000	<-----
rho_7	        -108.000000000      -19728.000000000       -7164.000000000	<-----
DonelsonHansen3, p=6, k=3, l=3
           0.0000       0.0000       0.0000
         -57.0000     136.0000       0.0000
          24.0000    -117.0000    -283.0000
          33.0000    -144.0000    -306.0000
           0.0000     125.0000     531.0000
           0.0000       0.0000      58.0000
          -1.0000       0.0000       0.0000
          24.0000     -45.0000       0.0000
          57.0000    -144.0000      84.0000
          10.0000     117.0000     531.0000
           0.0000      42.0000     306.0000
           0.0000       0.0000       9.0000
rho_0	           0.000000000           0.000000000           0.000000000
rho_1	           0.000000000           0.000000000           0.000000000
rho_2	           0.000000000           0.000000000           0.000000000
rho_3	           0.000000000           0.000000000           0.000000000
rho_4	           0.000000000           0.000000000           0.000000000
rho_5	           0.000000000           0.000000000           0.000000000
rho_6	        -132.000000000       -1044.000000000         900.000000000	<-----
rho_7	       -1548.000000000      -18216.000000000       20376.000000000	<-----
DonelsonHansen4, p=5, k=3, l=2
           0.0000       0.0000
         -57.0000      31.0000
          24.0000     -12.0000
          33.0000     -39.0000
           0.0000      20.0000
          -1.0000       0.0000
          24.0000     -10.0000
          57.0000     -39.0000
          10.0000      12.0000
           0.0000       7.0000
rho_0	           0.000000000           0.000000000
rho_1	           0.000000000           0.000000000
rho_2	           0.000000000           0.000000000
rho_3	           0.000000000           0.000000000
rho_4	           0.000000000           0.000000000
rho_5	           0.000000000           0.000000000
rho_6	        -132.000000000        -204.000000000	<-----
DonelsonHansen5, p=7, k=4, l=4
           0.0000       0.0000       0.0000       0.0000
       -1360.0000   13409.0000       0.0000       0.0000
       -1350.0000   30384.0000    3653.0000       0.0000
        2160.0000  -55026.0000  -22752.0000    4550.0000
         550.0000    2224.0000  -45792.0000   14160.0000
           0.0000    9009.0000   49888.0000  -14850.0000
           0.0000       0.0000   15003.0000   -5360.0000
           0.0000       0.0000       0.0000    1500.0000
          -9.0000       0.0000       0.0000       0.0000
         456.0000   -3585.0000       0.0000       0.0000
        2376.0000  -32904.0000   -1182.0000       0.0000
        1656.0000  -19008.0000    1440.0000   -1191.0000
         141.0000   16008.0000   49032.0000  -12456.0000
           0.0000    2529.0000   42144.0000  -13176.0000
           0.0000       0.0000    3906.0000     744.0000
           0.0000       0.0000       0.0000     459.0000
rho_0	           0.000000000           0.000000000           0.000000000           0.000000000
rho_1	           0.000000000           0.000000000           0.000000000           0.000000000
rho_2	           0.000000000           0.000000000           0.000000000           0.000000000
rho_3	           0.000000000           0.000000000           0.000000000           0.000000000
rho_4	           0.000000000           0.000000000           0.000000000           0.000000000
rho_5	           0.000000000           0.000000000           0.000000000           0.000000000
rho_6	           0.000000000           0.000000000           0.000000000           0.000000000
rho_7	           0.000000000           0.000000000           0.000000000           0.000000000
rho_8	      -21600.000000000     -880416.000000000     -732672.000000000     -237600.000000000	<-----
DonelsonHansen6, p=8, k=4, l=4
           0.0000       0.0000       0.0000       0.0000
       -1360.0000    4603.0000       0.0000       0.0000
       -1350.0000    1008.0000-3455657.0000       0.0000
        2160.0000  -28242.0000-28102272.0000   59160.0000
         550.0000   15728.0000-5942052.0000  175440.0000
           0.0000    6903.000031623488.0000 -201690.0000
           0.0000       0.0000 5876493.0000  -55920.0000
           0.0000       0.0000       0.0000   23010.0000
          -9.0000       0.0000       0.0000       0.0000
         456.0000   -1293.0000       0.0000       0.0000
        2376.0000   -8136.0000  789744.0000       0.0000
        1656.0000    9936.000015276816.0000  -15543.0000
         141.0000   16968.000040314888.0000 -159048.0000
           0.0000    1845.000020558640.0000 -156168.0000
           0.0000       0.0000 1449972.0000   20232.0000
           0.0000       0.0000       0.0000    6867.0000
rho_0	           0.000000000           0.000000000           0.000000000           0.000000000
rho_1	           0.000000000           0.000000000           0.000000000           0.000000000
rho_2	           0.000000000           0.000000000           0.000000000           0.000000000
rho_3	           0.000000000           0.000000000           0.000000000           0.000000000
rho_4	           0.000000000           0.000000000           0.000000000           0.000000000
rho_5	           0.000000000           0.000000000           0.000000000           0.000000000
rho_6	           0.000000000           0.000000000           0.000000000           0.000000000
rho_7	           0.000000000           0.000000000           0.000000000           0.000000000
rho_8	      -21600.000000000     -451872.000000000   -95072832.000000000    -3227040.000000000	<-----
rho_9	     -426816.000000000   -12359520.000000000 -4067660160.000000000  -142718112.000000000	<-----

1. were of high order p
2. had a remarkable low number of stepnumbers k
3. adhered to the condition of annulated dominance

Bibliography: Matija (Miško) Mihelčić (1935—2011).

Matija Mihelčić (Mihelcic): "Fast A-stabile Donelson-Hansensche zyklische Verfahren zur numerischen Integration von 'stiff'-Differentialgleichungssystemen", Angewandte Informatik, 1977, Vol 19, Heft 7, pp.299—305

Matija Mihelčić (Mihelcic): "A(α)-Stable Composite Multistep Methods of Order 5", Computing, Vol 20, 1978, pp.267—272

Matija Mihelčić (Mihelcic) und K. Wingerath: "A(α)-stable Cyclic Composite Multistep Methods of Orders 6 and 7 for Numerical Integration of Stiff Ordinary Differential Equations", ZAMM, Band 61, 1981, pp.261—264

Below table summarizes the Widlund-α-wedge. ODIOUS denotes the formulas from Peter Tischer. BP73 denotes the block-implicit methods from Bickart/Picel (1973).

Here we compute these values by using the QZ algorithm. The program stabregion has a command line flag -m for the Mihelcic formulas. See Stability Regions for BDF and Tendler's Formulas.

Also see Design Notes on System for the Analysis of Order- and Stepsize Changes for Cyclic Composite Multistep Methods.

1. The stability regions. You can hover over the diagrams and see the values.

2. stabregion program. The formulas were entered like so.

formula_t F[] = {
    . . .
    {
        "Mihelcic4", 4, 3, 2,	// name, p, k, l
        (double[]){
        0.635, 0,
        4.08, -21299.0 / 63500,
        -5.715, 0.288,
        1, -60489.0 / 63500,
        0, 1,
        // --------
        0, 0,
        -653.0 / 200, 4203.0 / 25400,
        -1.63, 10527.0 / 127000,
        109.0 / 200, 94929.0 / 127000,
        0, 0.387 }
    },
    {
        "Mihelcic5", 4, 3, 3,	// name, p, k, l
        (double[]){
        1.473, 0, 0,
        8.784, -1.369091006228046872693999232562, 0,
        -13.257, 2.544, 0.363,
        3, -2.174908993771953127306000767438, -2.160,
        0, 1, -1.203,
        0, 0, 3,
        // --------
        0, 0, 0,
        -7.347, 0.6040303354093489575646664108540, 0,
        -2.874, 0.2391213416373958302586656434162, -0.086,
        1.491, -0.1299696645906510424353335891459, 0.061,
        0, 0.481, 3.424,
        0, 0, 1.035 }
    },
    {
        "Mihelcic6", 6, 4, 4,	// name, p, k, l
        (double[]){
        -0.9390362339466378776258361005001e-01,                                      0,                                      0,                                      0,
         0.2307741600964885363988695519087e+00,  0.1313792557365642037980205785897e+01,                                      0,                                      0,
         0.6362705032057367094700091337420e+00, -0.5218540536524916920611801547836e+01,  0.1394364937701534512038572085087e+00,                                      0,
        -0.1773141039907661458106295075601e+01,  0.7529417145415851180555472647834e+01, -0.1011623223444230192358671688990e+01,  0.1444191297888636803281533656209e+01,
         1,                                     -0.4624669166256576297923876885895e+01,  0.2533821653452779618403940682161e+01, -0.5492130726047090045832910083724e+01,
         0,                                      1,                                     -0.2661634923778702877249126201679e+01,  0.7660459268273149438357977410280e+01,
         0,                                      0,                                      1,                                     -0.4612519840114696195806600982764e+01,
         0,                                      0,                                      0,                                     1,
        // ------------------------------------------------------------------------------------------------------------------------------------------------------------
        -0.1853058013316520953710176130202e-02,                                      0,                                      0,                                      0,
         0.2451624610656680441199165441716e+00, -0.6428104226828121021947147465023e+00,                                      0,                                      0,
        -0.9774386604306546531165819680760e+00,  0.1217442120880404165141230674303e+01, -0.1234001277245579249775694769490e+00,                                      0,
         0.5535769499829904561071401752847e+00,  0.2924405192057778509076307429902e+00,  0.6120300247935214387198741562141e+00, -0.6918619210365557047027968203354e+00,
         0.3644443541805902548632380173403e+00, -0.1439373462587944161697640697511e+01, -0.8155238085505402874283164469721e+00,  0.1168008238715629118739713863798e+01,
         0,                                      0.5385875007216307945710071168686e+00, -0.1145523605965158361286500199803e-01,  0.4386358816535462908082534556190e+00,
         0,                                                                          0,  0.4094644596664487699907078389984e+00, -0.1467449527693897117841289393376e+01,
         0,                                                                          0,                                      0,  0.5438956185163976564593606928377e+00 }
    },
    {
        "Mihelcic7", 7, 5, 5,	// name, p, k, l
        (double[]){
        -0.8153861905026022737434167615414e+00,                                      0,                                      0,                                      0,                                      0,
         0.4248895254033088383481894572139e+01, -0.2222441760654655361593826056284e-01,                                      0,                                      0,                                      0,
        -0.8854047951365927037900576200388e+01,  0.2654870121454308294304980610591e+00, -0.1032372883543017869086260071380e+00,                                      0,                                      0,
         0.9222953551982948533098094387068e+01, -0.1205209745869234199415093321373e+01,  0.8599203816315797312780689738287e+00, -0.4503824855570349203575243869964e+00,                                      0,
        -0.4802414664147507604935996997277e+01,  0.2592699276978907532702377400625e+01, -0.2778518172270275904802809146576e+01,  0.2649630382099203346956766040160e+01,  0.3219958911202349451261006329238e-02,
         1,                                     -0.2630752125658557609101843879749e+01,  0.4366928200996645755541775423194e+01, -0.6226227266320010195981550682429e+01,  0.1553984660531454990906076870577e-01,
         0,                                      1,                                     -0.3345093122003647795108409243309e+01,  0.7304031887973224464306216642665e+01, -0.4533196816782826816679836557976e+00,
         0,                                      0,                                      1,                                     -0.4277052518196382694923907613400e+01,  0.1691723344964800813261126750020e+01,
         0,                                      0,                                      0,                                      1,                                     -0.2257163468803035030953464869257e+01,
         0,                                      0,                                      0,                                      0,                                      1,
        // ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
         0.4225456071360219714271811811639e+00,                                      0,                                      0,                                      0,                                      0,
        -0.1384364739812333541090764922689e+01,  0.5044748643224129949603468040808e-01,                                      0,                                      0,                                      0,
         0.1146229672531143866569110401229e+01, -0.3550507135730755767219599244966e+00,  0.1003502539567659420767582244072e+00,                                      0,                                      0,
         0.6542124190961045586099091344395e+00,  0.9776848659097670987554894143623e+00, -0.6085349671365743688808169611528e+00,  0.2643442532041219470801194385611e+00,                                      0,
        -0.1322701573944066648938040619221e+01, -0.1124773012768567816507929091140e+01,  0.1286689084300843479379774302352e+01, -0.1081991130901289033649461985260e+01,  0.3096249379217892308281396122901e-01,
         0.4840799656531792806536461685364e+00,  0.1917873380953330674263870885019e+00, -0.9223533615854392440249726038524e+00,  0.1354222521191408219378646232897e+01, -0.2269170368480450921510442892867e+00,
         0,                                      0.3700608846337565198520459335580e+00, -0.2298469653682757407333327433246e+00, -0.9237493311630675669214627664954e-01,  0.7904598622265127771615281344478e+00,
         0,                                      0,                                      0.3969920978990539400467297585933e+00, -0.8904512454964667161729702886816e+00, -0.1202094468615905428211278510487e+01,
         0,                                      0,                                      0,                                      0.4473119757158579081724970288316e+00,  0.4061703817752004671762456256483e+00,
         0,                                      0,                                      0,                                      0,                                      0.3568354106010698554863523086895e+00 }
    },

    . . .

Above diagrams were produced like so:

for i in 4 5 6 7; do stabregion -m$i -oj -r600 >> /tmp/formulas; done

stabregion performs a check on the order of consistency.

Mihelcic7, p=7, k=5, l=5
              -0.8154       0.0000       0.0000       0.0000       0.0000
               4.2489      -0.0222       0.0000       0.0000       0.0000
              -8.8540       0.2655      -0.1032       0.0000       0.0000
               9.2230      -1.2052       0.8599      -0.4504       0.0000
              -4.8024       2.5927      -2.7785       2.6496       0.0032
               1.0000      -2.6308       4.3669      -6.2262       0.0155
               0.0000       1.0000      -3.3451       7.3040      -0.4533
               0.0000       0.0000       1.0000      -4.2771       1.6917
               0.0000       0.0000       0.0000       1.0000      -2.2572
               0.0000       0.0000       0.0000       0.0000       1.0000
               0.4225       0.0000       0.0000       0.0000       0.0000
              -1.3844       0.0504       0.0000       0.0000       0.0000
               1.1462      -0.3551       0.1004       0.0000       0.0000
               0.6542       0.9777      -0.6085       0.2643       0.0000
              -1.3227      -1.1248       1.2867      -1.0820       0.0310
               0.4841       0.1918      -0.9224       1.3542      -0.2269
               0.0000       0.3701      -0.2298      -0.0924       0.7905
               0.0000       0.0000       0.3970      -0.8905      -1.2021
               0.0000       0.0000       0.0000       0.4473       0.4062
               0.0000       0.0000       0.0000       0.0000       0.3568
rho_0             -0.000000000          -0.000000000          -0.000000000          -0.000000000           0.000000000  <-----
rho_1             -0.000000000          -0.000000000           0.000000010          -0.000000000           0.000000000  <-----
rho_2              0.000000000          -0.000000000           0.000000100          -0.000000000           0.000000000  <-----
rho_3             -0.000000000          -0.000000000           0.000000750          -0.000000000           0.000000000  <-----
rho_4              0.000000000          -0.000000001           0.000005000          -0.000000002           0.000000000  <-----
rho_5             -0.000000000          -0.000000002           0.000031250          -0.000000017           0.000000000  <-----
rho_6              0.000000000          -0.000000007           0.000187500          -0.000000118           0.000000000  <-----
rho_7           -380.244711682        -131.147463978        -181.569375773        -292.075880578        -107.416443262  <-----
rho_8          -7646.239139806       -3876.002411054       -6731.935756390      -12973.881560683       -5789.895353638  <-----

It is only the p=7 method which exhibits this behaviour.

3. Conjecture. Mihelcic and Wingerath make the following conjecture:

However this seems to be too optimistic! At any rate we were not able to obtain these orders of accuracy. Moreover, it seems to us that the following conjecture could be true:

“The A(α)-stable (k,M)-methods- with k = M and k > 3 have the greatest possible order of accuracy P = k + 2.”

However, we were unsuccessful in proving it.

Added 22-Jul-2025: This post was mentioned in The Mathematician: 8th July 2025.

So for seven and a half hours I had no internet and the blog went dark. Luckily, the IP address stayed the same, so I had no delay in DNS.

1. Google fonts. I had coped for Google font such that the blog ressorts to the system supplied fonts, in case outside fonts are not reachable. This problem occurs, when you read your own blog with no internet connection.

font-family:Merriweather,Georgia,"Times New Roman",ui-serif,Cambria,Times,serif;

2. JavaScript libraries. With no internet, you cannot use Datatables and Apache ECharts. So my blog posts using these, cannot be read unaffected anymore.

3. History of outages. I blogged about previous internet outages:

1. In 2022 the Vodafone internet router was defective
2. No internet on 08-Jan-2024
3. Vodafone Internet Outage #2

4. Uptime monitors. The uptime monitors all diagnosed the problem.

1. Hetrix
   • Down: Noticed at: 2025-07-03 23:10:42 (UTC+01:00)
   • Up: Noticed at: 2025-07-04 06:40:42 (UTC+01:00)
2. BetterUptime
   • Down: Started at: 04-Jul-2025 at 12:25am CEST
   • Up: Resolved at: 04-Jul-2025 at 8:55am CEST
3. UptimeRobot
   • Down: Incident started at 2025-07-04 00:57:02
   • Up: Resolved at 2025-07-04 06:34:05
4. Ahrefs site audit crawl failed at Jul 4, 6:07 AM
5. ping-failure-test every 30 minutes

Fri Jul  4 12:09:21 AM CEST 2025
Fri Jul  4 12:39:21 AM CEST 2025
Fri Jul  4 01:09:21 AM CEST 2025
Fri Jul  4 01:39:16 AM CEST 2025
Fri Jul  4 02:09:21 AM CEST 2025
Fri Jul  4 02:39:21 AM CEST 2025
Fri Jul  4 03:09:21 AM CEST 2025
Fri Jul  4 03:39:15 AM CEST 2025
Fri Jul  4 04:09:21 AM CEST 2025
Fri Jul  4 04:39:21 AM CEST 2025
Fri Jul  4 05:09:21 AM CEST 2025
Fri Jul  4 05:39:16 AM CEST 2025
Fri Jul  4 06:09:31 AM CEST 2025
Fri Jul  4 06:39:31 AM CEST 2025
Fri Jul  4 07:09:32 AM CEST 2025

Again, the Hetrix monitor is the most detailed and accurate alerter.

1. The extraneous roots at the origin should be equal to zero (as with the Adams formulas).
2. The roots at infinity should be equal to zero (as with the BDF).
3. The formulas should exhibit better stiff-stability properties, order by order, than the BDF.
4. The leading coefficients of the multistep formulae should not vary within a cycle.
5. The leading truncation error coefficients of the multistep formulae used in the cycle should not be "large".

Tischer used the nonlinear equation solver ZSYSTM from IMSL to solve his optimization problem. ZSYSTM is:

Determination of a root of a system of N simultaneous nonlinear equations in N unknowns, f(x)=0, in vector form

Tischer restricted himself to only two stages. The formulas were later implemented in a program called ODIOUS. Program ODIOUS was compared against LSODE in Tischer/Gupta (1985).

Tischer, Peter E.: “The Cyclic Use of Linear Multistep Formulas for the Solution of Stiff Differential Equations”, Ph.D. Thesis, Department of Computer Science, Monash University, Clayton, Victoria, Australia, August 1983, x+180 S.

Tischer, Peter E. und Sacks-Davis, Ron: “A New Class of Cyclic Multistep Formulae for Stiff Systems”, SIAM Journal on Scientific and Statistical Computing, Vol 4, No 4, December 1983, pp.733—747.

Peter Tischer and G.K. Gupta: “An evaluation of some new cyclic linear multistep formulas for stiff ODEs”, ACM Transactions on Mathematical Software, Vol. 11, No. 3, pages 263–27, 01-Sep-1985

Below table summarizes the Widlund-α-wedge. BP73 denotes the block-implicit methods from Bickart/Picel (1973).

Here we compute these values by using the QZ algorithm. The program stabregion has a command line flag -s for the Tischer/Sacks-Davis formulas. See Stability Regions for BDF and Tendler's Formulas.

Also see Design Notes on System for the Analysis of Order- and Stepsize Changes for Cyclic Composite Multistep Methods.

1. The stability regions. You can hover over the diagrams and see the values.

2. stabregion program. The formulas were entered like so in the C program.

#define S	0.0	// Tischer parameter


formula_t F[] = {
    . . .
    {
        "Tischer2", 2, 2, 2,	// name, p, k, l
        (double[]){
        0.2713503499466539, S * 0.2713503499466539,
        -1.271350349946654, S * -1.271350349946654,
        1, -1 + S,
        0, 1,
        // --------
        -0.06067517497332695, -0.04894502624599904 + S * (-0.06067517497332695),
        0.2143248250266731, 0.1728900524919981 + S * 0.2143248250266731,
        0.575, 0.3010549737540010 + S * 0.575,
        0, 0.575 }
    },
    {
        "Tischer3", 3, 3, 2,	// name, p, k, l
        (double[]){
        -0.7156809323463300, S * (-0.7156809323463300),
        2.421409496232843, S * 2.421409496232843,
        -2.705728563886513, 0.4195749238763092 + S *(-2.705728563886513),
        1, -1.419574923876309 + S,
        0, 1,
        // --------
        -0.8629888978651531, 1.894838801355351+ S * (-0.8629888978651531),
        3.166634912306544, -6.952885160409694+ S * 3.166634912306544,
        -4.013693645981575, 9.231466454815180 + S * (-4.013693645981575),
        1.72, -5.312995019637147 + S * 1.72,
        0, 1.72 }
    },
    {
        "Tischer4", 4, 4, 2,	// name, p, k, l
        (double[]){
        0.6103461100271559, S * 0.6103461100271559,
        -2.747685823192436, S * (-2.747685823192436),
        4.670005693524193, -0.2716147139534076 + S * 4.670005693524193,
        -3.532665980358913, 1.222768338553090 + S * (-3.532665980358913),
        1, -1.951153624599682 + S,
        0, 1,
        // --------
        0.9215366381763085, -2.649958179621567 + S * 0.9215366381763085,
        -4.136159579898865, 11.89388403771322 + S * (-4.136159579898865),
        7.141520549769378, -20.89280076921304 + S * 7.141520549769378,
        -5.652569985267611, 17.85562740240295 + S * (-5.652569985267611),
        1.72, -7.606291401927840 + S * 1.72,
        0, 1.72 }
    },
    {
        "Tischer5", 5, 5, 2,	// name, p, k, l
        (double[]){
        -0.5473524843400159, S * (-0.5473524843400159),
        3.046981165805116, S * 3.046981165805116,
        -6.842547445085438, 0.2023989966807180 + S * (-6.842547445085438),
        7.741845845969376, -1.126707101014822 + S * 7.741845845969376,
        -4.398927082349038, 2.473981498420040 + S * (-4.398927082349038),
        1, -2.549673394085936 + S,
        0, 1,
        // --------
        -0.8285692507199495, 2.569479392269974 + S * (-0.8285692507199495),
        4.523688780360865, -14.02842923277731 + S * 4.523688780360865,
        -10.05367226203171, 31.45494082222007 + S * (-10.05367226203171),
        11.42213178164391, -36.93603791002108 + S * 11.42213178164391,
        -6.661863565106905, 23.96920129089773 + S * (-6.661863565106905),
        1.59, -8.446918649021926 + S * 1.59,
        0, 1.59 }
    },
    {
        "Tischer6", 6, 6, 2,	// name, p, k, l
        (double[]){
        0.5065949241573893, S * 0.5065949241573893,
        -3.347588901033099, S * (-3.347588901033099),
        9.288264853658161, -0.1622565792899431 + S * 9.288264853658161,
        -13.85423667736953, 1.072194564235031 + S * (-13.85423667736953),
        11.70833137691048, -2.943247343299985+ S * 11.70833137691048,
        -5.301365576323402, 4.228025197181846 + S * (-5.301365576323402),
        1, -3.194715838826949 + S,
        0, 1,
        // --------
        0.6632827080818050, -1.966557927018182 + S * 0.6632827080818050,
        -4.318145132370032, 12.80281007873031 + S * (-4.318145132370032),
        11.87138330994840, -35.39751311755192 + S * 11.87138330994840,
        -17.69684560038281, 53.77255375657074 + S * (-17.69684560038281),
        15.14109874111104, -48.44295713982840 + S * 15.14109874111104,
        -7.068045626188859, 26.08926183188078 + S * (-7.068045626188859),
        1.4, -8.166685368910522 + S * 1.4,
        0, 1.4 }
    },
    {
        "Tischer7", 7, 7, 2,	// name, p, k, l
        (double[]){
        -0.4730377247001383, S * (-0.4730377247001383),
        3.614094099926330, S * 3.614094099926330,
        -11.91361867598596, 0.1354428064536342 + S * (-11.91361867598596),
        21.97700424011387, -1.034807631868773 + S * 21.97700424011387,
        -24.50710155920918, 3.390826065383960 + S * (-24.50710155920918),
        16.51027888261980, -6.137117459840426 + S * 16.51027888261980,
        -6.207619262764723, 6.516126407008639 + S * (-6.207619262764723),
        1, -3.870470187137034 + S,
        0, 1,
        // --------
        -0.5593384312526297, 1.627202025358370+ S * (-0.5593384312526297),
        4.220709442337714, -12.27869670539260 + S * 4.220709442337714,
        -13.79410919873106, 40.28383410923075 + S * (-13.79410919873106),
        25.36722912840438, -74.96406486441271 + S * 25.36722912840438,
        -28.42514847816480, 86.48642725198855 + S * (-28.42514847816480),
        19.46252654187500, -63.47949128834042 + S * 19.46252654187500,
        -7.551726936498641, 29.33643618328776 + S * (-7.551726936498641),
        1.275, -8.238999899992440 + S * 1.275,
        0, 1.275 }
    },
    {
        "Tischer8", 8, 8, 2,	// name, p, k, l
        (double[]){
        0.4453348513468461, S * 0.4453348513468461,
        -3.859180665772141, S * (-3.859180665772141),
        14.71642002045547, -0.1162654110659919 + S * 14.71642002045547,
        -32.27324489323404, 1.007532253824141 + S * (-32.27324489323404),
        44.53945382773937, -3.827901007455769 + S * 44.53945382773937,
        -39.61766259292482, 8.302866483037190 + S * (-39.61766259292482),
        22.16853315999479, -11.16589138289488 + S * 22.16853315999479,
        -7.119653707605472, 9.369883714651345 + S * (-7.119653707605472),
        1, -4.570224650096031 + S,
        0, 1,
        // --------
        0.4822252401396465, -1.384350259109908 + S * 0.4822252401396465,
        -4.136942315524837, 11.87614560523851 + S * (-4.136942315524837),
        15.65983206216709, -45.07917311093609 + S * 15.65983206216709,
        -34.21855612352479, 99.29376589604582 + S * (-34.21855612352479),
        47.30113434219221, -139.7912993045485 + S * 47.30113434219221,
        -42.45139314249457, 130.5230230565463 + S * (-42.45139314249457),
        24.20929805095255, -81.18525412979233 + S * 24.20929805095255,
        -8.028548065406828, 33.00040235056584 + S * (-8.028548065406828),
        1.18, -8.408425274884485 + S * 1.275,
        0, 1.18 }
    },
    . . .

Above diagrams were produced like so:

for i in `seq 3 8`; do stabregion -s$i -oj -r600 >> /tmp/formulas; done

stabregion performs a check on the order. Checking the correct order for the order eight method.

Tischer8, p=8, k=8, l=2
               0.4453       0.0000
              -3.8592      -0.0000
              14.7164      -0.1163
             -32.2732       1.0075
              44.5395      -3.8279
             -39.6177       8.3029
              22.1685     -11.1659
              -7.1197       9.3699
               1.0000      -4.5702
               0.0000       1.0000
               0.4822      -1.3844
              -4.1369      11.8761
              15.6598     -45.0792
             -34.2186      99.2938
              47.3011    -139.7913
             -42.4514     130.5230
              24.2093     -81.1853
              -8.0285      33.0004
               1.1800      -8.4084
               0.0000       1.1800
rho_0(1)           0.000000000           0.000000000
rho_1             -0.000000000           0.000000000
rho_2              0.000000000           0.000000000
rho_3              0.000000000           0.000000000
rho_4              0.000000000           0.000000000
rho_5              0.000000000           0.000000000
rho_6              0.000000000           0.000000002    <
rho_7              0.000000002           0.000000004    <
rho_8             -0.000000002           0.000000045    <--
rho_9        -268194.357417837      200351.482900381    <-----

One can notice that starting with consistency order of six the truncation error is no longer neglible.

Here we compute these values by using the QZ algorithm. We list the values for the BDF (backward differentiation formulas) and the cyclic linear multistep formulas by Tendler.

Also see Design Notes on System for the Analysis of Order- and Stepsize Changes for Cyclic Composite Multistep Methods.

1. The BDF.

The two first BDF are A-stable. Therefore the Widlund wedge α must be 90°, as can be seen by δ being zero.

You can hover over the diagrams and see the values.

2. Tendler's cyclic formulas.

3. Program stabregion. The C program to generate these values uses two LAPACK routines:

extern double dlamch_(char *cmach);
extern void zggev_(char *jobvl, char *jobvr, int *n, complex *a, int *lda, complex *b,
    int *ldb, complex *alpha, complex *beta, complex *vl, int *ldvl, complex *vr, int *ldvr,
    complex *work, int *lwork, double *rwork, int *info);

It stores the formulas like so:

typedef struct {
    const char *name;
    const int p;	// order (for information only)
    const int k;	// number of start steps, 2*(k+l) = number of rows of a[]
    const int l;	// cycle length, i.e., column count of a[]
    double *a;	// transpose of A_i and B_i matrices in a single matrix
} formula_t;

formula_t F[] = {
    {
        "BDF1", 1, 1, 1,
        (double[]){
        -1, 1,
        0, 1 }
    },
    {
        "BDF2", 2, 2, 1,
        (double[]){
        1, -4, 3,
        0, 0, 2 }
    },
    . . .
    {
        "Tendler3", 3, 3, 3,	// name, p, k, l
        (double[]){
        -2, 0, 0,
        9, -2, 0,
        -18, 9, 0,
        11, -18, 9,
        0, 11, -12,
        0, 0, 3,
        // --------
        0, 0, 0,
        0, 0, 0,
        0, 0, 0,
        6, 0, -4,
        0, 6, -4,
        0, 0, 2 }
    },
    . . .
};

It "transposes" above formulas in to matrices A1, B1, A0, and B0:

if (fm->k >= fm->l) {
    rest = fm->k - fm->l,
    n = fm->k,
    nrest = fm->l,
    nsq = fm->k * fm->k;
} else {
    rest = fm->l - fm->k,
    n = fm->l,
    nrest = fm->k,
    nsq = fm->l * fm->l;
}
eps = 10 * dlamch_(cmach);

memset(a0,0,sizeof(*a0) * nsq);	// set a0[] to zero matrix
memset(b0,0,sizeof(*b0) * nsq);	// set b0[] to zero matrix
memset(a1,0,sizeof(*a1) * nsq);	// set a1[] to zero matrix
memset(b1,0,sizeof(*b1) * nsq);	// set b1[] to zero matrix

for (i=0; i<rest; ++i) {
    a1[i+i*n] = 1;	// fill with parts of identity matrix
    if (i + nrest < n) a0[i+(i+nrest)*n] = -1;	// cancel out
}
for (i=rest; i<n; ++i) {
    for (j=0; j<n; ++j)
        a0[i+j*n] = fm->a[(i-rest)+j*fm->l];
    for (j=rest; j<n; ++j)
        a1[i+j*n] = fm->a[(i-rest)+((j-rest)+n)*fm->l],
        b1[i+j*n] = fm->a[(i-rest)+((j-rest+fm->l)+2*n)*fm->l];
}

Finally, it iterates through the unit circle and computes all eigenvalues.

for (i=0,phiinc=2*M_PI/nr,phi=0; i<nr; phi+=phiinc,++i) {
    eiphi = cexp(I * phi);
    for (j=0; j<nsq; ++j)	// A = A1 e^{i\phi} + A0, same for B
        a[j] = a1[j] * eiphi + a0[j],
        b[j] = b1[j] * eiphi + b0[j];
    info = 0;
    zggev_(jobvl, jobvr, &n, a, &lda, b, &ldb, alpha, beta, vl, &ldvl, vr, &ldvr, work, &lwork, rwork, &info);
    for (j=0; j<n; ++j) {
        if (beta[j] == 0) continue;
        lambda = alpha[j] / beta[j];
        rlambda = creal(lambda),
        ilambda = cimag(lambda),
        xmin = fmin(xmin,rlambda);	// Widlund distance delta
        if (rlambda < 0) {
            if (fabs(rlambda) > eps && fabs(ilambda) > eps)
                widlw = fmin(widlw,fabs(atan(ilambda/rlambda)));	// Widlund wedge in radians
        }
        prtf(i,lambda,xmin,180/M_PI*widlw);
}

The function pointer prtf() points to a function that prints JavaScript suitable for using in Apache ECharts.

3. Running program. The program stabregion is controlled by command line arguments.

1. With the output flag -oj we generate JavaScript.
2. Command line flags -b are BDF, -t are for Tendler's formulas of the respective order.
3. Command line flag -r specifies how many subdivisions we do for the unit circle.

rm /tmp/formula
for i in `seq 1 6`; do stabregion -oj -b$i -r600 >> /tmp/formula; done
for i in `seq 3 7`; do stabregion -oj -t$i -r600 >> /tmp/formula; done

Example: Print out all lines, which do not have a line length of 171 and not 1370.

Also see Line Length Distribution in Files.

Below Perl one-liner does that, here for the line lengths 20 and 21:

perl -ne 'print if (($n=length($_)) != 20 && $n != 21))' <file>

Below C program does it with a little bit of comfort on the command line. It might also be useful if Perl is not available. With command line option -g you specify a line length, which should not be filtered. Multiple line lengths are given by multiple -g's.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define MAXBUF	8192
char buf[MAXBUF];

int main (int argc, char *argv[]) {
    int i, c, gcnt=0, len;
    int good[10] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 };
    FILE *fp;

    while ((c = getopt(argc,argv,"g:")) != -1) {
        switch(c) {
            case 'g':
                if (gcnt >= 9) {
                    printf("%s: too many 'good' lines\n",argv[0]);
                    return 1;
                }
                good[gcnt++] = atoi(optarg);
                break;
            default:
                printf("%s: illegal option %c\n",argv[0],c);
                return 2;
        }
    }
    if (optind < argc) {
        if ((fp = fopen(argv[optind],"r")) == NULL) {
            printf("%s: cannot open %s\n",argv[0],argv[optind]);
            return 3;
        }
    } else fp = stdin;

L1:	while (fgets(buf,MAXBUF,fp) != NULL) {
        len = strlen(buf);
        for (i=0; i<gcnt; ++i)
            if (len == good[i]) goto L1;
        printf("%s",buf);
    }

    return 0;
}

The equivalent of the above Perl command would be

lenfilter -g20 -g21 <file>

using the C programming language and the Fortran library LAPACK.

Previously I had used cqzhes() and cqzval() from EISPACK.

1. Installing LAPACK. Watch out for any pre-existing BLAS library, e.g., GotoBLAS.

pacman -S blas cblas lapack lapack-doc

Check man page for zgghrd, zhgeqz, and zggev:

man zgghrd
man zhgeqz
man zggev

Checking the so-file with objdump -d and noticing that the Fortran symbols end with _:

objdump -d /usr/lib/liblapack.so

Info on the library liblapack.so to which we link:

ldd /usr/lib/liblapack.so
        linux-vdso.so.1 (0x000077c056586000)
        libblas.so.3 => /usr/lib/libblas.so.3 (0x000077c056481000)
        libgfortran.so.5 => /usr/lib/libgfortran.so.5 (0x000077c055200000)
        libm.so.6 => /usr/lib/libm.so.6 (0x000077c055108000)
        libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x000077c056454000)
        libc.so.6 => /usr/lib/libc.so.6 (0x000077c054f18000)
        /usr/lib64/ld-linux-x86-64.so.2 (0x000077c056588000)

zggev calls zgghrd and zhgeqz.

The methods in question use the QZ algorithm.

2. Example program. Compile and link with

gcc -Wall qztest.c -o qztest -llapack

Below program uses the following rules when linking to Fortran on Linux:

1. All arguments passed to Fortran are pointers.
2. Arrays in Fortran store their values in column order, in contrast to row order in C. Therefore we have to transpose the matrix.
3. Add underscore as suffix.

The program qztest.c is:

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <complex.h>

extern void zggev_(char *jobvl, char *jobvr, int *n, complex *a, int *lda, complex *b,
    int *ldb, complex *alpha, complex *beta, complex *vl, int *ldvl, complex *vr, int *ldvr,
    complex *work, int *lwork, double *rwork, int *info);



#define N	5
double stoer[] = {	// Stoer/Burlisch (1970):``Introduction to Numerical Analysis", page 374
    12,  1,   0,   0,   0,
    1,   9,   1,   0,   0,
    0,   1,   6,   1,   0,
    0,   0,   1,   3,   1,
    0,   0,   0,   1,   0
};


int main (int argc, char *argv[]) {
    int i, j, lda=N, ldb=N, ldvl=N, ldvr=N, lwork=N*N, n=N, info=0;
    char jobvl[8], jobvr[8];
    complex a[N*N], b[N*N], alpha[N], beta[N], work[N*N], vl[N*N], vr[N*N], lambda;
    double rwork[8*N];

    memset(b,0,sizeof(*b)*N*N);	// set b[] to zero matrix
    for (i=0; i<N; ++i) {
        b[i+i*N] = 1;
        for (j=0; j<N; ++j)
            a[i+j*N] = stoer[i*N+j];	// transpose
    }

    jobvl[0] = 'N';	// do not compute the left generalized eigenvectors
    jobvr[0] = 'N'; // do not compute the right generalized eigenvectors
    zggev_(jobvl, jobvr, &n, a, &lda, b, &ldb, alpha, beta, vl, &ldvl, vr, &ldvr, work, &lwork, rwork, &info);
    printf("zggev_.info=%d\n",info);

    puts("lambda =");
    for (i=0; i<N; ++i) {
        lambda = alpha[i] / beta[i];
        printf("\t(%11.6f %11.6f)\n",creal(lambda),cimag(lambda));
    }

    return 0;
}

It prints

lambda =
        (  12.316876    0.000000)
        (   9.016136    0.000000)
        (   6.000000    0.000000)
        (   2.983864    0.000000)
        (  -0.316876    0.000000)

3. Another example.

This should print

        (   6.441386    0.000000)
        (  -1.220693    1.495264)
        (  -1.220693   -1.495264)

Crosscheck with Wolfram Alpha:

Eigenvalues[ {{-1,0,2},{1,-2,3},{3,-2,2}}^(-1) * {{-9,0,-3},{-10,16,-2},{-1,28,1}} ]

Added 22-Jul-2025: This post was mentioned in Machine Learning Engineer: 27th May 2025.

She has more than 360 thousand followers on TikTok, and more than 4.8 million Likes.

@dr.cal.ur.science.pal

A team of doctors has just treated this woman's “untreatable” cancer using DNA editing. Let’s talk about it.

Your immune system needs to be very careful about what it attacks. If it starts going after your own healthy cells, things can go off the rails very quickly. So, your immune cells have evolved all kinds of internal checkpoints they have to go through before they start kicking the wrong ass.

One of those crucial checkpoint mechanisms is a protein called “CISH,” which is written into your cells’ DNA. It’s a voice of reason inside an immune cell that says,

“Hey, don't punch that guy, he's on our team.”

But every cancer cell starts as a healthy cell, so they all look like an ass that shouldn't get kicked. It’s one of the reasons that your immune system has such trouble fighting cancer, because they're bad guys that look like good guys.

Usually, some immune cells will eventually detect the imposter. These are called “tumor infiltrating lymphocytes,” or “TILs.” But just because a handful of TILs have successfully recognized and infiltrated enemy HQ doesn't mean that they can defeat the tumor on their own.

So, what if you extracted some TILs from behind enemy lines, multiplied them, and then put them back into the patient with a few billion of their buddies? Well, this does work, but only sometimes. See, it doesn't matter how many TILs can recognize the tumor and get inside of it if that CISH protein is holding them back from killing it.

So, what if before you put the TILs back in, you edited their DNA to delete CISH entirely? You’ve essentially made a group of jacked-up super soldiers that know the way to enemy HQ, and once they're inside, they can start banging heads together without anything holding them back.

This idea saved Emma Dimery’s life. By 2022, she had already gone through a decade of chemotherapy, radiotherapy, and immunotherapy, but her stage 4 colorectal cancer still hadn't been stopped. She thought she was out of options until she signed up for a clinical trial that would teach her TILs how to ignore it when cancer cells tried to fake their way out of getting whooped.

The trial team harvested Emma's TILs and then used CRISPR-Cas9 DNA editing to delete the gene that serves as instructions for her cells to make the CISH protein. They then put 100 billion of those edited TILs back into Emma's body so that they could find the tumor and start kicking its ass. And it worked!! Emma has been cancer free for two years now 🥳.

Now, Emma is only one of 12 patients on the trial who had their TILs extracted, edited, and put back in. The other patients didn't react quite as strongly for a variety of reasons the doctors are still trying to work out. But because this treatment works by taking the brakes off of the immune system rather than depending on some feature of the cancer cells themselves, it could theoretically be useful for a lot more patients. Everybody's cancer is a little bit different, but everybody's CISH works the same.

This is a huge step towards a treatment for cancer that is simultaneously tailored to the individual, because it runs on your own homegrown cells, but also universally applicable, because it runs on a mechanism that all of our bodies share.

Some notions. A GDG file consists of three parts in its file name:

<GDG-Base>.G<generation>.V<version>

The limit is the maximal number of generations we want to keep.

Here is an examples of a GDG with base DONKNUTH and limit 3:

1. DONKNUTH.G0001V00
2. DONKNUTH.G0002V00
3. DONKNUTH.G0003V00

Accessing a generation is done using the paranthesis notation on MVS and using relative generations.

1. So DONKNTUH(0) is DONKNUTH.G0003V00. The "current" generation.
2. Similarly, DONKNTUH(-1) is DONKNUTH.G0002V00. This is the "previous" generation.
3. And, DONKNTUH(-2) is DONKNUTH.G0001V00. This is the before-previous generation.
4. A new generation is created by specifying DONKNTUH(+1). That would be DONKNUTH.G0004V00.

Here is another example of GDG with base DRitchie and limit 8:

1. DRitchie.g9996v00
2. DRitchie.g9997v00
3. DRitchie.g9998v00
4. DRitchie.g9999v00
5. DRitchie.g0001v00
6. DRitchie.g0002v00
7. DRitchie.g0003v00
8. DRitchie.g0004v00

The generation number 0000 is not used. In above example DRitchie.g0000v00 will never exist. I.e., there is a jump from 9999 to 0001 in absolute generations.

The version of GDG is of no relevance in our following discussions. Its purpose is to change a specific generation and alter the file. For example, you could change DRitchie.g0003v00 to DRitchie.g0003v01. In that case DRitchie.g0003v00 will be gone. Only DRitchie.g0003v01 remains, and, of course, the other generations.

See Absolute generation and version numbers.

2. Solution sketch. This short memo outlines how this can be implemented with the help of SQLite. SQLite is particularly apt to this task as it provides:

1. Concurrency processing, i.e., protecting against accidental overwriting of parallel tasks
2. Keeping all information in a single file

The solution is now to have two sets of files:

1. A number of data files, which actually hold the data, named xxx.g0001v00, xxx.g0002v00, xxx.g0003v00, etc.
2. An SQLite file xxx.db for managing the generation, i.e., the actual file with generation number

The version part is kept constant to V00. We stick to the lowercase file suffixes. Mass lowercasing of file names described an approach to lowercase huge number of files.

In addition there will be a single binary gdg, which controls the access to above sets of files. Program gdg is entirely controlled by command line arguments.

gdg is written in C and accesses the SQLite database file and returns a string, which is the file name of the generation in question. As gdg is used in many shell scripts the startup time of gdg is important and other languages are too slow, see Performance Comparison C vs. Lua vs. LuaJIT vs. Java.

gdg takes two input strings via command line:

1. The name of the SQLite database for the GDG, e.g., DONKNUTH.db
2. The requested relative generation number, e.g., +2, or simply 2

For the example with DONKNUTH.db and +2, it will return

DONKNUTH.G0005V00

Likewise:

echo $(gdg DONKNUTH.db -2)

will print DONKNUTH.G0001V00.

To create an entire new GDG use command line flag -c and specify GDG base and limit. E.g., creating above example DRitchie with limit 8:

gdg -c DRitchie.db 8

If the limit is omitted, it is assumed to be 1.

Similarly, the limit is changed by specifying command line argument -c. If the new limit is smaller than the previous one, multiple files might get deleted by gdg.

gdg does not use the paranthesis notation from MVS, as paranthesis have a special meaning with the shell, and calling gdg from a shell is the most common use-case.

It should be noted that gdg just reads strings and produces strings. It does not produce any files. However, gdg deletes files! I.e., according the specified limit, surplus files are deleted. Forever. Whenever a positive relative generation is specified all the files which do not match the limit criterion are deleted by gdg.

Deleting the surplus files is done using scandir() and unlink().

gdg can take an optional third argument: a program name. This is just a string stored in the genhist table, see below.

3. Data model. The SQLite database will store below table called genmgt ("generation management").

As only the file name without path of the GDG is stored, the GDG can be moved around the filesystem.

We might be interested in the history of accesses. I.e., who accessed the GDG with what program or job. For this we can use the table genhist ("generation history"). This table is entirely optional and not required.

The following SQL statements will be used:

1. Create an entire new GDG base: insert into genmgt (...)
2. Specify relative generation, e.g., (+1):
   • select generation, limit from genmgt
   • update genmgt set generation = ...
3. Change limit: update genmgt set limit = ...

4. Outlook. Each GDG element might be a so called partitioned dataset. In UNIX jargon this would be a directory. I.e., so ideally gdg can also handle a GDG of directories.

5. Effort estimation. Program gdg can be written in less than three mandays.

  11991 cd
   8214 rsync
   5398 ll
   5206 v
   5193 l
   4254 time
   4123 li
   2490 git
   2432 lh
   2412 rg
   2192 ..
   1862 mv
   1813 grep
   1552 cat
   1483 ssh
   1419 p
   1385 tmux
   1271 find
   1204 man
   1199 scp
   1088 cp
   1032 php
   1008 rm
    956 startx
    891 perl
    869 pacman
    865 b
    796 uptime
    725 pmsh
    722 curl
    711 su
    707 ...
    661 file
    633 a
    615 +
    586 g
    560 tail
    557 r
    504 echo
    445 wc
    443 diff
    427 j
    420 cwebp
    410 nvim
    396 pidof
    393 which
    377 geany
    341 -

Above list was generated like so:

cut -d' ' -f1 .histfile | sort | uniq -c | sort -rn | li

A large portion of those commands are in turn aliases or one-line scripts.

TendlerDiss1973.pdf

RubinDiss1973.pdf

The Regenstein library of the University of Chicago offers the possibility for the public to scan microfilms. See Using the Microform Scanners.

The entrance of the Regenstein library.

The Regenstein library is next to the futuristic Mansueto library.

This is all part of the University of Chicago campus.

The scanning cubicle: you can see the two rolls with the microfilm in below photo while scanning.

Unfortunately, each page had to be scanned individually and saved as a separate file. So it took me a couple of hours to scan the two microfilms. Each page is essentially just an image stored as PDF.

The actual command to concatenate all those files from Tendler's dissertation:

$ time pdfunite Tendler01aL*.pdf Tendler01b*.pdf TendlerDiss1973.pdf
        real 2.99s
        user 2.77s
        sys 0
        swapped 0
        total space 0

Rubin's dissertation:

$ time pdfunite Rubin02a* Rubin02b*.pdf RubinDiss1973.pdf
        real 3.10s
        user 2.87s
        sys 0
        swapped 0
        total space 0

The results are here:

1. A-Stability and Composite Multistep Methods
2. A Stiffly Stable Integration Process Using Cyclic Composite Methods

It is entirely possible, and even very likely, in view of the fact that the parameters $C_{ij}$ were “manually” set in an interactive computer search for the maximum $\alpha$, that better and simpler cyclic composite methods exist. An interested reader is invited to try the development of such methods on his own. For those, who are satisfied with the methods obtained thus far, in what follows, we describe how they are implemented in a numerical algorithm.

J.M. Tendler, Th.A. Bickart, Z. Picel (1976)

Inhalt

• 1. Die sieben zyklischen Korrektorformeln von J.M. Tendler
• 2. Bemerkungen zu den Formeln von J.M. Tendler
• 3. Die Fehlerfaktoren der Korrektorformeln
• 4. Die Stabilitätseigenschaften der Korrektorformeln
• 5. Die sieben Prädiktorformeln

In diesem Abschnitt werden sämtliche benutzten Formeln vorgestellt, die in dem Programm TENDLER Verwendung gefunden haben. Zuerst kommen die Korrektorformeln und anschliessend die Prädiktorformeln.

Angegeben werden auch mehrere Fehlerfaktoren und Fehlerkonstanten und natürlich auch die Werte, die maßgeblich die Stabilitätseigenschaften quantifizieren, also die Werte $\alpha$ und $\delta$ bei der $A_\infty[\alpha]$-Stabilität und $S_\infty[\delta]$-Stabilität. Hingewiesen wird auch auf Charakteristika und auf den prinzipiellen Aufbau der zyklischen Formeln. Diskutiert wird ebenfalls, welche Bedingungen Stabilität bei unendlich in einfachster Weise garantieren.

Mit angeführt werden auch mehrere Darstellungen für diese Formelpaare; nämlich einmal in der gewöhnlichen Darstellung und das andere Mal in Form von rückwärtsgenommenen Differenzen. Die letztgenannte Form ist auch diejenige Form, die auch in dem Programm TENDLER verwendet wird. Die Darstellung in Form von rückwärtsgenommenen Differenzen bietet Vorteile insbesondere bei der Fehlerkontrolle und bei der Schrittweiten- und Ordnungssteuerung. Dort stellen sie gerade Näherungen für entsprechend benötigte Ableitungswerte dar. Die Korrektoriteration hingegen verhält sich neutral gegenüber der Darstellungsart. Ebenso der Prädiktor. In beiden Darstellungsarten, also sowohl der Darstellung in Form von rückwärtsgenommenen Differenzen als auch in gewöhnlicher Ordinatenform, sind die Prädiktorrechnungen einfach durchführbar. Die Prädiktorrechnungen haben einen häufig unterschätzten Einfluß auf die Gesamtrechenzeit.

1. Die sieben zyklischen Korrektorformeln von J.M. Tendler

At first it was hoped that high order $A$-stable cyclic methods could be found. This goal was not achieved. However, the new integration methods are applicable to the solution of stiff systems. Moreover they exhibit better stability properties than the backward differentiation formulas in Gear's widely accepted algorithm.

J.M. Tendler (1973)

1. Die Verfahren der Ordnung $p=1,\ldots,7$, die Joel Marvin Tendler im Rahmen seiner Dissertation 1973 neu entwickelt hat, werden hier nun angegeben.

Für die an anderer Stelle genauer erläuterte Fehlerkonstante von Henrici

werden auch gleichzeitig die Linkseigenvektoren $v_p$, für $p=1,\ldots,7$ der entsprechenden Matrizen aufgeführt. Der Rechtseigenvektor ist natürlich immer $w_p=(1,\ldots,1)^\top$, für $p=1,\ldots,7$. Zu dieser Konstanten vgl. man auch den Aufsatz von Albrecht (1985).

Die beiden ersten Verfahren, also die der Ordnung 1 und 2, sind nichts anderes als die zyklische Wiederholung ein und der selben Formel, hier also des impliziten Euler-Verfahrens für die Ordnung 1 und BDF2 für das Verfahren der Ordnung 2.

Bibliographisch:

1. Joel Marvin Tendler: “A Stiffly Stable Integration Process Using Cyclic Composite Methods”, Ph.D. Diss., Syracuse University, Syracuse, New York, 26-Feb-1973
2. Tendler, Joel Marvin und Bickart, Theodore A. und Picel, Zdenek: “STINT: STiff ordinary differential equations INTegrator. Program and User Manual”, Electrical and Computer Engineering Department, Syracuse University, Syracuse, New York 13210, USA, and Department of Electrical Engineering, Delft University of Technology, Delft, The Netherlands, Technical Report TR-76-12, December 1976, ii+85 pages
3. Theodore A. Bickart (1936—2023), obituary
4. Peter Albrecht, 1985: “Numerical Treatment of O.D.E.s: The Theory of $A$-Methods”
5. Euler, Leonhard (1707—1783)
6. Henrici, Peter Karl Eugen (1923—1987)
7. Zdenek Picel

2. Die Formeln der Ordnung $p=1,\ldots,7$ sind stets von der Gestalt

In Matrixschreibweise erhält man z.B. für $\ell=3$ und $k=2$, also für ein dreistufiges Verfahren mit 2 Startwerten, ausgeschrieben:

Aus Übersichtlichkeitsgründen werden die sieben nachfolgenden zyklischen Verfahren in der folgenden transponierten Schreibweise angegeben.

Später wird mit den Tableaux in transponierter Darstellung auch in dieser Form gerechnet.

3. Für die zyklische, dreifache Wiederholung des impliziten Euler-Verfahrens

und für die zyklische, dreifache Wiederholung der BDF2

ergeben sich die beiden transponierten Tableaux für die Verfahren wie untenstehend.

Ordnung 1.

Ordnung 2.

Für die Links- und Rechtseigenvektoren $v_1$, $v_2$, $w_1$ und $w_2$ erhält man

und für die Fehlerkonstanten von Henrici ergeben sich damit

Diese beiden Verfahren werden sowohl in dem Programm STINT als auch in dem neu entwickelten Programm TENDLER in dieser Form benutzt. Da beide Verfahren, also sowohl das implizite Euler-Verfahren und auch BDF2, optimale, also nicht verbesserbare Stabilitätseigenschaften $A_\infty^0[\alpha]$ und $S_\infty^0[\delta]$ besitzen, wurden sie unverändert so übernommen.

4. Für $p=k=3$, $p=k=4$ und $p=k=5$ konnte Tendler die folgenden Werte finden. Bei allen drei Verfahren sind wieder die beiden ersten Stufen der Zyklen BDF3, BDF4, bzw. BDF5. Nur die letzte Stufe sorgt, bzw. die letzten beiden Stufen sorgen für die Vergrößerung des Widlund-Winkels $\alpha$ bei der $A_\infty[\alpha]$-Stabilität und der Verkleinerung der Widlund-Distanz $\delta$ bei der $S_\infty[\delta]$-Stabilität.

Ordnung 3.

Ordnung 4.

Ordnung 5.

Die Vektoren $v_i$ mit $v_i\rho(1)=0$, die Vektoren $w_i$ mit $\rho(1){\mskip 3mu}w_i=0$ und die Fehlerkonstanten von Henrici sind

Wäre beim Verfahren dritter Ordnung auch noch die letzte Stufe gleich BDF3, also das gesamte Verfahren dreimal BDF3 hintereinander, so erhielte man für die Fehlerkonstante natürlich $\tilde C_3=-3/4$. Der Linkseigenvektor von $\rho(1)$, der zugehörige Rechtseigenvektor und die Fehlerkonstante von Henrici zu dem Verfahren 5.ter Ordnung berechnen sich zu

5. Man beachte bei allen diesen obigen Formeln, als auch bei den noch folgenden Formeln, den grundlegenden Aufbau. In gewisser Hinsicht wird das Potential, welches man prinzipiell durch Einführung der zyklischen Verfahren erhält, nicht in voller Gänze ausgeschöpft, jedoch stellt sich die vermeintliche Einschränkung unter anderen Gesichtspunkten (programmiermässige Einfachheit, Rechenbedarf, Speicherplatzbedarf) als gar keine Einschränkung heraus, sondern als echter Vorteil. Stets sind die Formeln von der Gestalt,

D.h. es handelt sich immer um die zyklische Hintereinanderschaltung linearer Mehrschrittverfahren mit fester Anzahl von Startwerten. Insbesondere heißt dies z.B. für die letzte Stufe, daß nicht alle möglichen $k+(\ell-1)$ Werte benutzt werden, sondern tatsächlich nur $k$, oder bei der Ordnung $p=3$ sogar nur $k-1$. Erneut wird deutlich, daß es sich hier um eine echte Verallgemeinerung der BDF auf Mehrstufigkeit handelt. Insbesondere werden also nicht alle möglichen zurückliegenden Ableitungswerte verwendet. Aufgrund des Einbein-Charakters der BDF sind natürlich auch andere Verallgemeinerungen denkbar.

Tischer (1983) in seiner Dissertation und Tischer/Sacks-Davis (1983) verfahren hier etwas anders. Hier werden in der letzten Stufe der Zyklen ein Startwert zusätzlich verwendet. Neben den potentiell besseren Stabilitätseigenschaften von zyklischen Verfahren ist dies ein weiterer, möglicher Vorteil von zyklischen Verfahren gegenüber einstufigen linearen Mehrschrittverfahren.

Beachtenswert ist auch die Benutzung der skalierten Ableitungswerte $hf_{m\ell+i}$. Wie bei den $y_{m\ell+i}$ werden hier nicht alle möglichen Werte wirklich benutzt. Zum maßgeblichen Teil hängt dies an der $A_\infty^0[\alpha]$- bzw. $S_\infty^0[\delta]$-Stabilität. Dennoch muß man hierbei im Auge behalten, daß man diese zusätzlichen Werte auch zu speichern hat. Insbesondere hat man auch für den Fall vorzusorgen, daß ein gesamter Zyklus zurückgewiesen wird und somit noch weitere Werte abgespeichert werden müssen. Darüber hinaus entstehen Rechnungen für die skalierten Ableitungen bei der Interpolation für evtl. benötigte Zwischengitterpunkte bei einem Schrittweitenwechsel.

6. Für die Ordnung $p=k=6$, wo nur die erste Stufe des Zykluses gleich der BDF6 ist und schließlich für $p=k=7$, für die die BDF noch niemals $D$-stabil ist, konnte Tendler die folgenden zyklischen, steif-stabilen Verfahren finden. Bei $p=k=7$ sind die ersten beiden Stufen wieder die BDF7, wobei man dann auch erneut ein Beispiel dafür sieht, daß die zyklische Kombination klassischer (instabiler) Mehrschrittverfahren das Gesamtverhalten gegenüber dem Einzelverhalten u.U. verbessern kann.

Ordnung 6.

Ordnung 7.

Die entsprechenden Eigenvektoren zu $\rho(1)$ und die Fehlerkonstante von Henrici sind hierbei

Für das letzte siebente Verfahren lauten die Eigenvektoren und die Fehlerkonstante von Henrici

Bibliographisch:

1. Tischer, Peter E.: “The Cyclic Use of Linear Multistep Formulas for the Solution of Stiff Differential Equations”, Ph.D. Thesis, Department of Computer Science, Monash University, Clayton, Victoria, Australia, August 1983, x+180 S.
2. Tischer, Peter E. + Sacks-Davis, Ron: “A New Class of Cyclic Multistep Formulae for Stiff Systems”, SIAM Journal on Scientific and Statistical Computing, Vol 4, No 4, December 1983, pp.733–747

2. Bemerkungen zu den Formeln von J.M. Tendler

1. Man könnte es als entscheidenden Nachteil ansehen, daß die drei Verfahren der Ordnungen $p=5$, $p=6$ und $p=7$ nun 4 Stufen verlangen. Umfangreiche Testläufe mit dem Programm TENDLER zeigten nun jedoch, daß bei einer geringfügigen Modifikation der Schrittweiten- und Ordnungssteuerung Schrittzurückweisungen innerhalb, oder am Ende, eines Zykluses “fast nie” auftreten. Zudem sind Zurückweisungen in dem Programm TENDLER ohnehin die Ausnahme. Die Testläufe legten sogar nahe noch weiter zu gehen. Zyklen mit 5 Stufen wären völlig unproblematisch in das Programm TENDLER zu integrieren. Diese Erfahrungen stehen im Gegensatz zu den _Entwurfs_zielen bei den zyklischen Verfahren von Tischer (1983) (Dissertation) und Tischer/Sacks-Davis (1983), nicht jedoch zu den praktischen Erfahrungen, die Tischer/Gupta (1983) und Tischer/Gupta (1985) mit dem Programm ODIOUS gemacht haben.

Bibliographisch:

1. Peter E. Tischer
2. Gopal K. Gupta
3. Ron Sacks-Davis

2. Auffällig ist bei den $\alpha_{ij}$-Werten die Vorzeichenalternierung entlang herunter einer Spalte und bei den $\beta_{ij}$-Werten sticht ins Auge, die “Konzentration” der Minus-Zeichen “in der Mitte”, falls nicht dort Nullen stehen, wiederum entlang herunter einer Spalte.

Stets sind die ersten beiden Stufe nichts anderes als die BDF, außer bei dem Verfahren sechster Ordnung.

Für die Abhängigkeit der Stufenzahl $\ell$ von der Ordnung $p$ erhält man übersichtlich zusammengefasst,

welche man auch mit der Formel $\ell=3+\lfloor p/5\rfloor$ berechnen könnte $(1\le p\le7)$.

3. Für alle Formeln von Tendler (1973) gilt, daß $z_i=hf_i$ für $i\le m\ell$ nicht benötigt werden, man vergl. hier auch das vorher angegebene Sternchen-Schema. Stets ist also $B_0=0$, bei invertierbarer Matrix $B_1$. Hiermit sichert man automatisch, daß die Nullstellen des charakteristischen Polynoms $\det Q(\mu,H)$ für $\mathop{\rm Re}H\to-\infty$ gegen Null streben, wegen

(in nicht ganz korrekter Schreibweise) und somit aufgrund von $B_0=0$ dann

Damit enthält das Spektrum des Matrixpolynoms $Q(\mu,\infty)$ nur die Null, falls $B_1$ invertierbar vorausgesetzt wird.

Dies ist nicht der einzige mögliche Weg sicherzustellen, daß die Eigenwerte bei $\mathop{\rm Re}\nolimits H=-\infty$ verschwinden. Wichtig ist lediglich, daß das Spektrum des Matrixpolynoms

nur aus der Null besteht. Für den Falle eines Polynoms der Form $B_1\mu+B_0$ ergibt sich daher die folgende Überlegung. Man beachte, daß man auf dieses lineare Polynom alle anderen Polynome zurückführen kann, u.U. durch Vergrößern der Dimension, z.B. durch das Begleitpolynom.

Im monischen Falle, also $\det B_1\ne 0$, besteht das Spektrum des besagten linearen Polynomes $B_1\mu+B_0$ genau dann nur aus der Null, wenn $B_1^{-1}B_0$ ähnlich ist zu

also die Matrizen $J_i$ Jordankästen zum Eigenwert Null sind. Der Fall $\det B_\kappa\ne0$ ist stets zu erreichen, wenn alle Stufen implizit, oder sogar blockimplizit sind.

Bei expliziten Stufen oder bei Mischung aus expliziten und impliziten Stufen, ist das reguläre, oder häufig sogar singuläre Matrizenbüschel $B_1\mu+B_0$ entsprechend zu untersuchen, siehe Gantmacher (1986).

Tischer (1983) (Dissertation) und Tischer/Sacks-Davis (1983) z.B. gehen hier den anderen möglichen Weg mit $B_0\ne0$.

Dennoch bedeutet $B_0=0$ im Falle $B_1\mu+B_0$, bzw. $B_i=0$ ($i=0,\ldots,\kappa$) im Falle $\sum_{i=0}^\kappa B_i \mu^i$, einen großen Rechen- und Speichervorteil, wenn der Prädiktor entsprechend gewählt wird. Sehr vereinfacht ausgedrückt heißt dies: “Je mehr Nullen in den Stufen, desto besser.” Die Vereinfachung liegt hier maßgeblich u.a. daran, daß der Prädiktor entsprechend gewählt werden muß und, daß Nullen bei den $y_{m\ell+i}$-Werten nicht automatisch auch zu Nullen bei der Implementierung führen, welche ja auf der Darstellung in Form von rückwärtsgenommenen Differenzen beruht. Man beachte, daß bei z.B. 1000 Schritten u.U. 2000–9000 mehr Vektoradditionen und Skalar-Vektor-Multiplikationen ausgeführt werden müssen, wenn man “Nullen verschenkt.” Es ist nicht ungewöhnlich, daß eine Funktionsauswertung billiger ist als die Bildung einer längeren Linearkombination von gespeicherten Vektoren.

Adams-Formeln und BDF sind hier typische Vertreter für beide möglichen Extrema, was z.T. ihren hohen Grad an Effizienz plausibel macht.

4. Beispiel: Für das explizite Eulerverfahren $y_{n+1}-y_n=hf_n$ erhält man mit den Vektoren

die vier Matrizen

Die Matrizen $A_1$, $A_0$, $B_1$ und $B_0$ sind natürlich nicht eindeutig. An der Nichtinvertierbarkeit von $B_1$ ändert dies aber nichts. Offensichtlich hat das Matrixpolynom $B_1\mu+B_0$, also hier das verallgemeinerte Eigenwertproblem, einen Eigenwert bei unendlich und damit ist das Verfahren natürlich nicht $A_\infty^0$-stabil. An dieser Stelle werden auch die Überlegung bezüglich des singulären Matrizenbüschels von Wichtigkeit.

5. Es sei nocheinmal darauf hingewiesen, daß für die Ordnung $p=1$ und $p=2$ keine originär neuen Formeln gesucht und damit auch nicht gefunden werden konnte. Es wurde tatsächlich dreimal hintereinander dasselbe Verfahren bei den beiden niedrigsten Ordnungen als zyklisches Verfahren benutzt. Im Hinblick darauf, daß sich die beiden Stabilitätsmerkmale, wie Widlund-$\alpha$-Winkel, also $A_\infty[\alpha]$-Stabilität und Widlund-Distanz, also $S_\infty[\delta]$-Stabilität, nicht weiter verbessern lassen, wird dies verständlich. Zudem bleibt damit auch der Wert $\gamma$={$\beta$}/{$\alpha$}, der bei der Iterationsmatrix $W=I-h\gamma J$ wichtig wird, über den gesamten Zyklus konstant, obwohl dies nicht so wesentlich ist, wie vermutet werden könnte. Kleinere Fehlerkonstanten und Schrittweitenwechsel-Stabilitätseigenschaften blieben bei der Auffindung der neuen zyklischen Formeln unberücksichtigt.

6. Das Tschebyscheffsche-$\alpha$-Äquilibrierungsmaß $\mu$ einer linearen Mehrschrittformel ist definiert durch

Hiermit wird ein erster Eindruck von der unterschiedlichen Gewichtung einzelner Terme in dem Verfahrensausdruck vermittelt.

Die zyklischen Formeln von Tendler weisen annähernd ein Äquilibrierungsmaß von $1:p$ auf, wobei $p$ die Ordnung des Zykluses ist.

Die BDF hingegen weisen annähernd ein Äquilibrierungsmaß von $1:{p\over2}$ auf, welches also lediglich halb so groß ist, wie die Äquilibrierungsmaße der Formeln von J.M. Tendler.

Diesem Punkte wurde beim Aufsuchen der Formeln keinerlei Berücksichtigung zuteil. Anders ist dies etwa bei den Formeln von Filippi/Kraska (1973).

Hier wurden die Formeln durch Lösungen eines linearen Optimierungsproblems bestimmt, wobei die Summe der Beträge der Koeffizienten der Verfahren in der Zielfunktion auftauchten. Die Formeln von Tischer (1983) (Dissertation) und Tischer/Sacks-Davis (1983) weisen besonders ungünstige Äquilibrierungsmaße auf. Die Maße bewegen sich von ca. $1:p^2$ bis zu ca. $1:2p^2$.

7. Zusammenstellend noch die Werte

welche wichtig sind für die Konvergenz der Picard-Iteration. Die Werte sind auf eine Dezimale hinter dem Komma genau.

8. Es seien jetzt wieder nur die Tendlerschen Zyklen betrachtet. Die Matrix $Q$ sei diejenige Matrix, wie sie bei der Umwandlung von Ordinatenwerten in Werte für rückwärtsgenommene Differenzen auftaucht. Durch Vormultiplikation mit der Matrix $VQ^\top V$, passenden Ranges, mit $V=(\delta_{n+1-i,j})$, ergeben sich für die Ordinatenwerte $y_{m\ell+i}$ die Werte in der folgenden Tabelle, also die Werte für die Darstellung der Formeln in Form von rückwärtsgenommenen Differenzen. Dieses sind jedoch noch nicht die Werte, die nachher wirklich gespeichert werden. Die Werte $z_{m\ell+i}$ bleiben hier unberücksichtigt, da sie nicht in der Form rückwärtsgenommener Differenzen verwendet werden. Dies liegt an der günstigen Eigenschaft der Tendlerschen Zyklen, daß die skalierten Ableitungswerte niemals interpoliert zu werden brauchen. Bei einem Schrittweitenwechsel muß ein Ableitungswert lediglich neu skaliert werden. Dies ist eine typische Eigenschaft der Tendlerschen Zyklen. Für anders gebaute Zyklen gilt dies nämlich nicht so ohne weiteres.

Wegen der ersten Zeile der Matrix $Q^\top$ und der Konsistenzbedingung $\rho(1)=0$, wird der Wert für $\nabla^0$ nicht mit vermerkt. Die erste Stufe bei allen zyklischen Formeln ist die BDF und hier gilt

Die Normierung von $\nabla y_{n+1}$ wird hier nicht gesondert durchgeführt.

Bibliographisch:

1. Gantmacher, Felix R. (1908–1964)
2. Widlund, Olof B. (*1938)
3. Filippi, Siegfried (1929—2022)
4. Kraska, E.

3. Die Fehlerfaktoren der Korrektorformeln

The new methods presented were obtained solely on the basis of optimizing the Widlund wedge angle associated with the method. It is felt that attention should also be focused on simultaneously minimizing the local discretization error. In addition, higher stiffly stable methods should be derived.

J.M. Tendler (1973)

Nun seien die Beträge der Fehlerfaktoren der sieben zyklischen Verfahren angegeben. Zum Vergleich werden auch die Fehlerfaktoren der BDF angeschrieben. Diese sind gerade die Fehlerfaktoren der ersten Stufe der 7 zyklischen Verfahren. Mit Fehlerfaktor $c_{i,p+1}$ wird hier die erste nichtverschwindende Komponente des Matrix-Vektor-Produktes aus $C_{p+1,k}$ und den Koeffizienten $(\alpha,\beta)^\top$ des Verfahrens bezeichnet, skaliert mit einer entsprechenden Fakultät. Es ist also

1. Die Fehlervektoren $\gamma_p$ für alle Ordnungen $p=1,\ldots,7$ und alle Stufen, lauten exakt ausgerechnet wie in der Tabelle sichtbar.

2. Normiert man stufenweise den führenden Koeffizienten des Verfahrens auf eins, so normieren sich entsprechend die Werte $c_{i,p+1}$, für $i=1,\ldots,\ell$. Für die zyklischen Formeln von Tendler ergeben sich dann nach kurzer Rechnung, die Werte in der entsprechenden Tabelle.

3. Zur Gegenüberstellung nun die gleichen Fehlerfaktoren diesmal jedoch skaliert mit dem Kehrwert der Summe der $\beta$-Koeffizienten, was gerade zur Fehlerkonstante von Henrici führt. Man beachte, daß hier erneut stets stufenweise die Fehlerfaktoren gebildet wurden.

Auffällig ist, daß die Tabellenwerte betragsmässig leicht äquilibrierter erscheinen und im ganzen gesehen, etwas größer geworden sind. Natürlich gilt hier immer $\sigma_{ip}(1)\ne0$, für alle Stufen $i=1,\ldots,\ell$ und alle Ordnungen $p=1,\ldots,7$. Das heißt, 1 ist einfache Wurzel jeder Stufe, nicht notwendig die betragsmässig größte.

4. Übersichtlich zum Vergleich gegenübergestellt, werden jetzt die zyklusweise gebildeten Fehlerkonstanten von Henrici aufgeführt. Man beachte, daß diese Konstante jeweils immer zyklusweise gebildet wird. Die Werte lauten für alle Ordnungen $p=1,\ldots,7$:

Diese Konstanten sind nun betragsmässig am größten, von allen bisher angegebenen Konstanten. Auffallend ist hier die Konstante für die Ordnung $p=3$.

5. Um einen Überblick über die Größenordnungen zu erhalten, seien auch die Fehlerkonstanten der Adams-Moulton-Verfahren in der folgenden Tabelle angeschrieben.

Wegen $\rho'(1)=\sigma(1)=1$ und $\alpha_k=1$ stimmen alle drei verschiedenen Arten an Fehlerkonstanten überein. Vergleicht man nun alle bisher angegebenen Konstanten, so muß man beachten vor welcher $h$-Potenz diese Konstanten stehen. Beispielsweise führt bei einem Verfahren siebenter Ordnung eine Halbierung der Schrittweite asymptotisch betrachtet, zu einer Erhöhung der “Genauigkeit” um den Faktor 256. Überdies ist der Unterschied zwischen einem Verfahren $p$-ter und $(p+1)$-ter Ordnung nur gering, falls die Schrittweite variabel sein kann. Ist das Verfahren $p$-ter Ordnung nicht mehr ausreichend genau genug, so ist es gerade die zentrale Aufgabe der Ordnungssteuerung dies zu erkennen und durch Wahl einer passenderen Ordnung, den Genauigkeitsverlust wieder auszugleichen. Weiterhin beachte man die Wachstumseigenschaften der Fehlerkonstante von Henrici bei mehrfacher Wiederholung einer Stufe.

Bibliographisch:

1. John Couch Adams (1819–1892)
2. Forest Ray Moulton (1872–1952)

4. Die Stabilitätseigenschaften der Korrektorformeln

While methods suitable for non-stiff problems, $\ldots$, are easy to find and to analyse, methods appropriate for stiff problems seem to be able to hide their presence much more successfully. However, there are such methods $\ldots$

J.C. Butcher (1987)

Zum Vergleich seien die Werte für den Widlund-$\alpha$-Winkel der Formeln von J.M. Tendler mit denen der BDF in der untenstehenden Tabelle gegenübergestellt. Man beachte, daß die BDF7 nicht mehr $D$-stabil ist, erst recht also nicht mehr $A_\infty[\alpha]$-stabil. Rechts daneben ist auch eine Gegenüberstellung der Widlund Distanzen $\delta$, bei der $S_{\infty}[\delta]$-Stabilität.

Widlund-$\alpha$-Winkel. Für die Berechnung der Winkel der BDF vgl. man Lajos Lóczi1 (2019) und Akrivis/Katsoprinakis (2019): Maximum angles of $A(\vartheta)$-stability of backward difference formulae, PDF.

Widlund-Distanz $\delta$.

Die Definition der Begriffe Widlund-Winkel, Widlund-Distanz, $A_\infty[\alpha]$-Stabilität, $S_\infty[\delta]$-Stabilität findet man bei Tendler (1973) und Tendler/Bickart/Picel (1978), aber sinngemäß auch bei Albrecht (1979), §7.2., und weiteren Autoren.

Bibliographisch:

1. Butcher, John Charles (*1933)
2. Albrecht, Peter: “Die numerische Behandlung gewöhnlicher Differentialgleichungen — Eine Einführung unter besonderer Berücksichtigung zyklischer Verfahren”, Carl Hanser Verlag, München Wien, 1979, xi+193 S.
3. Albrecht, Peter: “Numerische Behandlung gewöhnlicher Differentialgleichungen”, Jül-1274, Februar 1976, Berichte der Kernforschungsanlage Jülich, Institut für Festkörperforschung, Kopie

5. Die sieben Prädiktorformeln

The difficulty of resolving various other questions concerned with incorporating general linear methods into practical software should not be underestimated.

John C. Butcher (1987)

Es seien jetzt noch die Prädiktorformeln angegeben. Bei ihnen handelt es sich um nichts anderes als die expliziten BDF. Diese Formeln sind für Ordnungen $p>2$ nicht mehr $D$-stabil, d.h. sie dürfen nicht alleinstehend ohne einen Korrektor verwendet werden. Das Verfahren erster Ordnung ist natürlich nichts anderes als das explizite Eulerverfahren $y_{n+1}=y_n+hf_n$, und die Prädiktorformel zweiter Ordnung ist die (explizite) Mittelpunktsregel $y_{n+1}=y_{n-1}+2hf_n$ (= explizite Nyström-Formel zweiter Ordnung).

Die Angabe der Werte geschieht zunächst in der Form

für die Ordnungen $p=1,\ldots,7$. Die Werte $\beta_{n-i}$ für $i>0$ sind sämtlich Null, d.h. heißt es werden vom Prädiktor keine weiteren vergangenen skalierten Ableitungen benutzt.

Zuerst nun die Werte $\alpha_{n-i}$ und $\beta_n$ in der obigen Darstellung mit gewöhnlichen Ordinatenwerten $y_{m\ell+i}$, siehe erste Tabelle.

Die Darstellung der Prädiktorformeln in Form von rückwärtsgenommenen Differenzen, also in der Darstellungsform

für die Ordnungen $p=1,\ldots,7$, entnimmt man der zweiten Tabelle.

In kompakter Form seien noch diejenigen Werte angegeben, die auch tatsächlich im Programm TENDLER benutzt werden, wenn auch nicht in dieser kompakten Form. An späterer Stelle wird nocheinmal kurz auf die Herleitung dieser Koeffizienten eingegangen. Die nachstehende Tabelle enthält in gewisser Hinsicht ein “Gemisch” von Prädiktor- und Korrektorformeln. Dabei werden für $y$ rückwärtsgenommene Differenzen verwendet, für $z$ jedoch nicht.

Hierbei beachte man, daß die Werte in Tendler/Bickart/Picel (1976) für $p=6$, $i=4$ nicht sämtlich richtig sind. In dem Programm STINT und auch in dem Programm DIFJMT werden jedoch die korrekten Werte gespeichert.

Bibliographisch:

1. Tendler, J.M. + Bickart, Th. + Picel, Z.: “STINT: STiff ordinary differential equations INTegrator. Program and User Manual”, Electrical and Computer Engineering Department, Syracuse University, Syracuse, New York 13210, USA, and Department of Electrical Engineering, Delft University of Technology, Delft, The Netherlands, Technical Report TR-76-12, December 1976, ii+85 S.

1. Neural Network Training using Stiff ODE Solvers
2. Reply to: Neural Network Back-Propagation Revisited with Ordinary Differential Equations

Below threedimensional graph shows different frequencies, and when solving for the global maximum there are very many local maxima in the way.

In this case you want the stiff solver to ignore the high frequency solutions, but just follow the low frequency solution, thereby going straight to the global maximum.

The above graph is similar to an egg carton.

• 1. J-Pilot
• 2. Pilot-Link

J-Pilot (Wikipedia) is a graphical application to manage

• dates and appointments
• addresses
• to-do's
• memos of all sorts
• various plugins, e.g., expenses

J-Pilot was written by Judd Montgomery.

1. J-Pilot

Below are all the steps to build J-Pilot on Arch Linux, assuming Pilot-Link is already installed, because you need the header files of Pilot-Link for building J-Pilot.

I just built in /tmp because this happens to be in RAM on Arch Linux and is therefore quite fast.

klm@chieftec /tmp: git clone git@github.com:juddmon/jpilot.git
Cloning into 'jpilot'...
remote: Enumerating objects: 11777, done.
remote: Counting objects: 100% (470/470), done.
remote: Compressing objects: 100% (188/188), done.
remote: Total 11777 (delta 300), reused 388 (delta 282), pack-reused 11307 (from 1)
Receiving objects: 100% (11777/11777), 9.71 MiB | 9.07 MiB/s, done.
Resolving deltas: 100% (8805/8805), done.
klm@chieftec /tmp: cd jpilot

Content of repository.

klm@chieftec /tmp/jpilot: ls -alF
total 4944
drwxr-xr-x 13 klm  klm    2480 Mar  6 09:02 ./
drwxrwxrwt 15 root root    360 Mar  6 09:02 ../
-rw-r--r--  1 klm  klm   79584 Mar  6 09:02 ABOUT-NLS
-rw-r--r--  1 klm  klm   15486 Mar  6 09:02 address.c
-rw-r--r--  1 klm  klm  195960 Mar  6 09:02 address_gui.c
-rw-r--r--  1 klm  klm    3527 Mar  6 09:02 address.h
-rw-r--r--  1 klm  klm   31590 Mar  6 09:02 alarms.c
-rw-r--r--  1 klm  klm    1328 Mar  6 09:02 alarms.h
-rw-r--r--  1 klm  klm    3193 Mar  6 09:02 AUTHORS
-rwxr-xr-x  1 klm  klm     985 Mar  6 09:02 autogen.sh*
-rw-r--r--  1 klm  klm    2024 Mar  6 09:02 BUGS
-rw-r--r--  1 klm  klm   18635 Mar  6 09:02 calendar.c
-rw-r--r--  1 klm  klm    2633 Mar  6 09:02 calendar.h
-rw-r--r--  1 klm  klm   37367 Mar  6 09:02 category.c
-rw-r--r--  1 klm  klm   19586 Mar  6 09:02 ChangeLog
-rw-r--r--  1 klm  klm   19582 Mar  6 09:02 configure.in
-rw-r--r--  1 klm  klm   22486 Mar  6 09:02 contact.c
-rw-r--r--  1 klm  klm   17992 Mar  6 09:02 COPYING
-rw-r--r--  1 klm  klm    3599 Mar  6 09:02 cp1250.c
-rw-r--r--  1 klm  klm    1156 Mar  6 09:02 cp1250.h
-rw-r--r--  1 klm  klm     401 Mar  6 09:02 .cvsignore
-rw-r--r--  1 klm  klm   35669 Mar  6 09:02 dat.c
-rw-r--r--  1 klm  klm   27453 Mar  6 09:02 datebook.c
-rw-r--r--  1 klm  klm  235733 Mar  6 09:02 datebook_gui.c
-rw-r--r--  1 klm  klm    4833 Mar  6 09:02 datebook.h
-rw-r--r--  1 klm  klm     335 Mar  6 09:02 description-pak
drwxr-xr-x  2 klm  klm     120 Mar  6 09:02 dialer/
-rw-r--r--  1 klm  klm   13964 Mar  6 09:02 dialer.c
drwxr-xr-x  2 klm  klm     580 Mar  6 09:02 docs/
drwxr-xr-x  2 klm  klm     300 Mar  6 09:02 empty/
drwxr-xr-x  2 klm  klm     100 Mar  6 09:02 Expense/
-rw-r--r--  1 klm  klm   12981 Mar  6 09:02 export_gui.c
-rw-r--r--  1 klm  klm    2047 Mar  6 09:02 export.h
-rw-r--r--  1 klm  klm    2494 Mar  6 09:02 font.c
-rw-r--r--  1 klm  klm    9470 Mar  6 09:02 gettext.h
drwxr-xr-x  7 klm  klm     240 Mar  6 09:02 .git/
-rw-r--r--  1 klm  klm     642 Mar  6 09:02 .gitignore
-rw-r--r--  1 klm  klm    1283 Mar  6 09:02 i18n.h
drwxr-xr-x  2 klm  klm     400 Mar  6 09:02 icons/
-rw-r--r--  1 klm  klm   14841 Mar  6 09:02 import_gui.c
-rw-r--r--  1 klm  klm   15766 Mar  6 09:02 INSTALL
-rw-r--r--  1 klm  klm   16768 Mar  6 09:02 install_gui.c
-rw-r--r--  1 klm  klm    9608 Mar  6 09:02 install_user.c
-rw-r--r--  1 klm  klm    1063 Mar  6 09:02 install_user.h
-rw-r--r--  1 klm  klm    7150 Mar  6 09:02 japanese.c
-rw-r--r--  1 klm  klm    1202 Mar  6 09:02 japanese.h
-rw-r--r--  1 klm  klm    2467 Mar  6 09:02 jp-contact.c
-rw-r--r--  1 klm  klm   76522 Mar  6 09:02 jpilot.c
-rw-r--r--  1 klm  klm  684119 Mar  6 09:02 jpilotcss.blue
-rw-r--r--  1 klm  klm    8750 Mar  6 09:02 jpilotcss.default
-rw-r--r--  1 klm  klm  684118 Mar  6 09:02 jpilotcss.green
-rw-r--r--  1 klm  klm  684118 Mar  6 09:02 jpilotcss.purple
-rw-r--r--  1 klm  klm  684118 Mar  6 09:02 jpilotcss.steel
-rw-r--r--  1 klm  klm     169 Mar  6 09:02 jpilot.desktop
-rw-r--r--  1 klm  klm   71820 Mar  6 09:02 jpilot-dump.c
-rw-r--r--  1 klm  klm    1110 Mar  6 09:02 jpilot.h
-rw-r--r--  1 klm  klm    9877 Mar  6 09:02 jpilot-merge.c
-rw-r--r--  1 klm  klm    4906 Mar  6 09:02 jpilotrc.blue
-rw-r--r--  1 klm  klm    2595 Mar  6 09:02 jpilotrc.default
-rw-r--r--  1 klm  klm    4367 Mar  6 09:02 jpilotrc.green
-rw-r--r--  1 klm  klm    5283 Mar  6 09:02 jpilotrc.purple
-rw-r--r--  1 klm  klm    4993 Mar  6 09:02 jpilotrc.steel
-rw-r--r--  1 klm  klm    5011 Mar  6 09:02 jpilot.spec.in
-rw-r--r--  1 klm  klm    9043 Mar  6 09:02 jpilot-sync.c
-rw-r--r--  1 klm  klm    1204 Mar  6 09:02 jpilot.xpm
-rw-r--r--  1 klm  klm    2073 Mar  6 09:02 jp-pi-contact.h
drwxr-xr-x  2 klm  klm     100 Mar  6 09:02 jpsqlite/
drwxr-xr-x  2 klm  klm     120 Mar  6 09:02 KeyRing/
-rw-r--r--  1 klm  klm   25866 Mar  6 09:02 libplugin.c
-rw-r--r--  1 klm  klm   11324 Mar  6 09:02 libplugin.h
-rw-r--r--  1 klm  klm   86295 Mar  6 09:02 libsqlite.c
-rw-r--r--  1 klm  klm    2889 Mar  6 09:02 libsqlite.h
-rw-r--r--  1 klm  klm    6094 Mar  6 09:02 log.c
-rw-r--r--  1 klm  klm    1935 Mar  6 09:02 log.h
drwxr-xr-x  2 klm  klm     280 Mar  6 09:02 m4/
-rw-r--r--  1 klm  klm    4781 Mar  6 09:02 Makefile.am
-rw-r--r--  1 klm  klm   10269 Mar  6 09:02 memo.c
-rw-r--r--  1 klm  klm   72251 Mar  6 09:02 memo_gui.c
-rw-r--r--  1 klm  klm    1492 Mar  6 09:02 memo.h
-rwxr-xr-x  1 klm  klm    3514 Mar  6 09:02 mkinstalldirs*
-rw-r--r--  1 klm  klm   18430 Mar  6 09:02 monthview_gui.c
-rw-r--r--  1 klm  klm       0 Mar  6 09:02 NEWS
-rw-r--r--  1 klm  klm    9129 Mar  6 09:02 otherconv.c
-rw-r--r--  1 klm  klm    1524 Mar  6 09:02 otherconv.h
-rw-r--r--  1 klm  klm   10509 Mar  6 09:02 password.c
-rw-r--r--  1 klm  klm    1702 Mar  6 09:02 password.h
-rw-r--r--  1 klm  klm    2875 Mar  6 09:02 pidfile.c
-rw-r--r--  1 klm  klm    1076 Mar  6 09:02 pidfile.h
-rw-r--r--  1 klm  klm    2797 Mar  6 09:02 pi-task.h
-rw-r--r--  1 klm  klm   13382 Mar  6 09:02 plugins.c
-rw-r--r--  1 klm  klm    2819 Mar  6 09:02 plugins.h
drwxr-xr-x  2 klm  klm     520 Mar  6 09:02 po/
-rw-r--r--  1 klm  klm   26864 Mar  6 09:02 prefs.c
-rw-r--r--  1 klm  klm   38779 Mar  6 09:02 prefs_gui.c
-rw-r--r--  1 klm  klm    1011 Mar  6 09:02 prefs_gui.h
-rw-r--r--  1 klm  klm    6367 Mar  6 09:02 prefs.h
-rw-r--r--  1 klm  klm   40224 Mar  6 09:02 print.c
-rw-r--r--  1 klm  klm   12070 Mar  6 09:02 print_gui.c
-rw-r--r--  1 klm  klm    2847 Mar  6 09:02 print.h
-rw-r--r--  1 klm  klm   37995 Mar  6 09:02 print_headers.c
-rw-r--r--  1 klm  klm    1216 Mar  6 09:02 print_headers.h
-rw-r--r--  1 klm  klm   32340 Mar  6 09:02 print_logo.c
-rw-r--r--  1 klm  klm    1029 Mar  6 09:02 print_logo.h
-rw-r--r--  1 klm  klm    6490 Mar  6 09:02 README
-rw-r--r--  1 klm  klm    2214 Mar  6 09:02 README.md
-rwxr-xr-x  1 klm  klm     373 Mar  6 09:02 reconf*
-rw-r--r--  1 klm  klm   15482 Mar  6 09:02 restore_gui.c
-rw-r--r--  1 klm  klm    1062 Mar  6 09:02 restore.h
-rw-r--r--  1 klm  klm    4695 Mar  6 09:02 russian.c
-rw-r--r--  1 klm  klm    1166 Mar  6 09:02 russian.h
-rw-r--r--  1 klm  klm   26316 Mar  6 09:02 search_gui.c
-rwxr-xr-x  1 klm  klm    3998 Mar  6 09:02 SlackBuild.in*
-rw-r--r--  1 klm  klm    1890 Mar  6 09:02 stock_buttons.h
-rw-r--r--  1 klm  klm  128907 Mar  6 09:02 sync.c
-rw-r--r--  1 klm  klm    1902 Mar  6 09:02 sync.h
drwxr-xr-x  2 klm  klm     100 Mar  6 09:02 SyncTime/
-rw-r--r--  1 klm  klm   12280 Mar  6 09:02 task.c
-rw-r--r--  1 klm  klm     404 Mar  6 09:02 TODO
-rw-r--r--  1 klm  klm   13885 Mar  6 09:02 todo.c
-rw-r--r--  1 klm  klm  106957 Mar  6 09:02 todo_gui.c
-rw-r--r--  1 klm  klm    2359 Mar  6 09:02 todo.h
-rw-r--r--  1 klm  klm  120331 Mar  6 09:02 utils.c
-rw-r--r--  1 klm  klm   18441 Mar  6 09:02 utils.h
-rw-r--r--  1 klm  klm   13742 Mar  6 09:02 weekview_gui.c

We do not run configure but autogen.sh.

klm@chieftec /tmp/jpilot: time ./autogen.sh
+ rm -f configure Makefile Makefile.in config.h.in
+ autopoint --force
Copying file config.rpath
Copying file m4/codeset.m4
Copying file m4/glibc2.m4
Copying file m4/glibc21.m4
Copying file m4/intdiv0.m4
Copying file m4/intl.m4
Copying file m4/intldir.m4
Copying file m4/intmax.m4
Copying file m4/inttypes-pri.m4
Copying file m4/inttypes_h.m4
Copying file m4/lcmessage.m4
Copying file m4/lock.m4
Copying file m4/longdouble.m4
Copying file m4/longlong.m4
Copying file m4/nls.m4
Copying file m4/po.m4
Copying file m4/printf-posix.m4
Copying file m4/size_max.m4
Copying file m4/stdint_h.m4
Copying file m4/uintmax_t.m4
Copying file m4/ulonglong.m4
Copying file m4/visibility.m4
Copying file m4/wchar_t.m4
Copying file m4/wint_t.m4
Copying file m4/xsize.m4
Copying file po/Makefile.in.in
Copying file po/Makevars.template
Copying file po/Rules-quot
Copying file po/boldquot.sed
Copying file po/en@boldquot.header
Copying file po/en@quot.header
Copying file po/insert-header.sin
Copying file po/quot.sed
Copying file po/remove-potcdate.sin
+ intltoolize --force --copy --automake
+ libtoolize --force --copy --automake
+ aclocal -I m4
aclocal: warning: autoconf input should be named 'configure.ac', not 'configure.in'
+ autoheader
autoheader: warning: autoconf input should be named 'configure.ac', not 'configure.in'
+ automake --add-missing --foreign
automake: warning: autoconf input should be named 'configure.ac', not 'configure.in'
configure.in:57: warning: The 'AM_PROG_MKDIR_P' macro is deprecated, and its use is discouraged.
configure.in:57: You should use the Autoconf-provided 'AC_PROG_MKDIR_P' macro instead,
configure.in:57: and use '$(MKDIR_P)' instead of '$(mkdir_p)'in your Makefile.am files.
configure.in:20: installing './compile'
configure.in:19: installing './config.guess'
configure.in:19: installing './config.sub'
configure.in:8: installing './install-sh'
configure.in:8: installing './missing'
automake: warning: autoconf input should be named 'configure.ac', not 'configure.in'
Expense/Makefile.am: installing './depcomp'
Makefile.am:32: warning: source file 'icons/icons.c' is in a subdirectory,
Makefile.am:32: but option 'subdir-objects' is disabled
automake: warning: possible forward-incompatibility.
automake: At least one source file is in a subdirectory, but the 'subdir-objects'
automake: automake option hasn't been enabled.  For now, the corresponding output
automake: object file(s) will be placed in the top-level directory.  However, this
automake: behavior may change in a future Automake major version, with object
automake: files being placed in the same subdirectory as the corresponding sources.
automake: You are advised to start using 'subdir-objects' option throughout your
automake: project, to avoid future incompatibility.
Makefile.am:32: warning: source file 'jpsqlite/jpsqlite.c' is in a subdirectory,
Makefile.am:32: but option 'subdir-objects' is disabled
+ autoconf
configure.in:12: warning: 'AM_CONFIG_HEADER': this macro is obsolete.
configure.in:12: You should use the 'AC_CONFIG_HEADERS' macro instead.
aclocal.m4:1788: AM_CONFIG_HEADER is expanded from...
configure.in:12: the top level
configure.in:26: warning: The macro 'AC_PROG_INTLTOOL' is obsolete.
configure.in:26: You should run autoupdate.
aclocal.m4:423: AC_PROG_INTLTOOL is expanded from...
configure.in:26: the top level
configure.in:37: warning: The macro 'AC_LIBTOOL_DLOPEN' is obsolete.
configure.in:37: You should run autoupdate.
m4/ltoptions.m4:113: AC_LIBTOOL_DLOPEN is expanded from...
configure.in:37: the top level
configure.in:37: warning: AC_LIBTOOL_DLOPEN: Remove this warning and the call to _LT_SET_OPTION when you
configure.in:37: put the 'dlopen' option into LT_INIT's first parameter.
./lib/autoconf/general.m4:2434: AC_DIAGNOSE is expanded from...
m4/ltoptions.m4:113: AC_LIBTOOL_DLOPEN is expanded from...
configure.in:37: the top level
configure.in:38: warning: The macro 'AC_PROG_LIBTOOL' is obsolete.
configure.in:38: You should run autoupdate.
m4/libtool.m4:100: AC_PROG_LIBTOOL is expanded from...
configure.in:38: the top level
configure.in:57: warning: AM_PROG_MKDIR_P: this macro is deprecated, and will soon be removed.
configure.in:57: You should use the Autoconf-provided 'AC_PROG_MKDIR_P' macro instead,
configure.in:57: and use '$(MKDIR_P)' instead of '$(mkdir_p)'in your Makefile.am files.
./lib/autoconf/general.m4:2434: AC_DIAGNOSE is expanded from...
aclocal.m4:1755: AM_PROG_MKDIR_P is expanded from...
m4/po.m4:23: AM_PO_SUBDIRS is expanded from...
m4/gettext.m4:57: AM_GNU_GETTEXT is expanded from...
configure.in:57: the top level
configure.in:57: warning: The macro 'AC_TRY_LINK' is obsolete.
configure.in:57: You should run autoupdate.
./lib/autoconf/general.m4:2918: AC_TRY_LINK is expanded from...
lib/m4sugar/m4sh.m4:690: _AS_IF_ELSE is expanded from...
lib/m4sugar/m4sh.m4:697: AS_IF is expanded from...
./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from...
./lib/autoconf/general.m4:2270: AC_CACHE_CHECK is expanded from...
m4/gettext.m4:367: gt_INTL_MACOSX is expanded from...
m4/gettext.m4:57: AM_GNU_GETTEXT is expanded from...
configure.in:57: the top level
configure.in:57: warning: The macro 'AC_TRY_LINK' is obsolete.
configure.in:57: You should run autoupdate.
./lib/autoconf/general.m4:2918: AC_TRY_LINK is expanded from...
lib/m4sugar/m4sh.m4:690: _AS_IF_ELSE is expanded from...
lib/m4sugar/m4sh.m4:697: AS_IF is expanded from...
./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from...
./lib/autoconf/general.m4:2270: AC_CACHE_CHECK is expanded from...
m4/gettext.m4:57: AM_GNU_GETTEXT is expanded from...
configure.in:57: the top level
configure.in:57: warning: The macro 'AC_TRY_LINK' is obsolete.
configure.in:57: You should run autoupdate.
./lib/autoconf/general.m4:2918: AC_TRY_LINK is expanded from...
lib/m4sugar/m4sh.m4:690: _AS_IF_ELSE is expanded from...
lib/m4sugar/m4sh.m4:697: AS_IF is expanded from...
./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from...
./lib/autoconf/general.m4:2270: AC_CACHE_CHECK is expanded from...
m4/iconv.m4:20: AM_ICONV_LINK is expanded from...
m4/gettext.m4:57: AM_GNU_GETTEXT is expanded from...
configure.in:57: the top level
configure.in:76: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:76: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:76: the top level
configure.in:107: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:107: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:107: the top level
configure.in:120: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:120: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:120: the top level
configure.in:133: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:133: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:133: the top level
configure.in:146: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:146: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:146: the top level
configure.in:163: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:163: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:163: the top level
configure.in:175: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:175: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:175: the top level
configure.in:192: warning: AM_PATH_GTK_3_0 is deprecated, use PKG_CHECK_MODULES([GTK], [gtk+-3.0]) instead
aclocal.m4:34: AM_PATH_GTK_3_0 is expanded from...
configure.in:192: the top level
configure.in:192: warning: The macro 'AC_TRY_RUN' is obsolete.
configure.in:192: You should run autoupdate.
./lib/autoconf/general.m4:2995: AC_TRY_RUN is expanded from...
aclocal.m4:34: AM_PATH_GTK_3_0 is expanded from...
configure.in:192: the top level
configure.in:192: warning: The macro 'AC_TRY_LINK' is obsolete.
configure.in:192: You should run autoupdate.
./lib/autoconf/general.m4:2918: AC_TRY_LINK is expanded from...
aclocal.m4:34: AM_PATH_GTK_3_0 is expanded from...
configure.in:192: the top level
configure.in:200: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:200: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:200: the top level
configure.in:278: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:278: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:278: the top level
configure.in:296: warning: The macro 'AC_TRY_LINK' is obsolete.
configure.in:296: You should run autoupdate.
./lib/autoconf/general.m4:2918: AC_TRY_LINK is expanded from...
configure.in:296: the top level
configure.in:309: warning: The macro 'AC_TRY_RUN' is obsolete.
configure.in:309: You should run autoupdate.
./lib/autoconf/general.m4:2995: AC_TRY_RUN is expanded from...
configure.in:309: the top level
configure.in:339: warning: The macro 'AC_TRY_COMPILE' is obsolete.
configure.in:339: You should run autoupdate.
./lib/autoconf/general.m4:2845: AC_TRY_COMPILE is expanded from...
configure.in:339: the top level
configure.in:391: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:391: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:391: the top level
configure.in:428: warning: The macro 'AC_HEADER_TIME' is obsolete.
configure.in:428: You should run autoupdate.
./lib/autoconf/headers.m4:702: AC_HEADER_TIME is expanded from...
configure.in:428: the top level
configure.in:438: warning: The macro 'AC_TRY_LINK' is obsolete.
configure.in:438: You should run autoupdate.
./lib/autoconf/general.m4:2918: AC_TRY_LINK is expanded from...
configure.in:438: the top level
configure.in:454: warning: The macro 'AC_TYPE_SIGNAL' is obsolete.
configure.in:454: You should run autoupdate.
./lib/autoconf/types.m4:805: AC_TYPE_SIGNAL is expanded from...
configure.in:454: the top level
configure.in:462: warning: The macro 'AC_HELP_STRING' is obsolete.
configure.in:462: You should run autoupdate.
./lib/autoconf/general.m4:204: AC_HELP_STRING is expanded from...
configure.in:462: the top level
+ test x = x
+ echo Running configure ...
Running configure ...
+ ./configure
checking for a BSD-compatible install... /bin/install -c
checking whether sleep supports fractional seconds... yes
checking filesystem timestamp resolution... 0.01
checking whether build environment is sane... yes
checking for a race-free mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking xargs -n works... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether gcc accepts -g... yes
checking for gcc option to enable C11 features... none needed
checking whether gcc understands -c and -o together... yes
checking whether make supports the include directive... yes (GNU style)
checking dependency style of gcc... gcc3
checking for strerror in -lcposix... no
checking whether NLS is requested... yes
checking for intltool-update... /bin/intltool-update
checking for intltool-merge... /bin/intltool-merge
checking for intltool-extract... /bin/intltool-extract
checking for xgettext... /bin/xgettext
checking for msgmerge... /bin/msgmerge
checking for msgfmt... /bin/msgfmt
checking for gmsgfmt... /bin/msgfmt
checking for perl... /bin/perl
checking for perl >= 5.8.1... 5.40.1
checking for XML::Parser... ok
checking for sed... /bin/sed
checking for grep... /bin/grep
checking for cut... /bin/cut
checking how to print strings... printf
checking for a sed that does not truncate output... (cached) /bin/sed
checking for grep that handles long lines and -e... (cached) /bin/grep
checking for egrep... /bin/grep -E
checking for fgrep... /bin/grep -F
checking for ld used by gcc... /bin/ld
checking if the linker (/bin/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /bin/nm -B
checking the name lister (/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking how to convert x86_64-pc-linux-gnu file names to x86_64-pc-linux-gnu format... func_convert_file_noop
checking how to convert x86_64-pc-linux-gnu file names to toolchain format... func_convert_file_noop
checking for /bin/ld option to reload object files... -r
checking for file... file
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for ranlib... ranlib
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking command to parse /bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for a working dd... /bin/dd
checking how to truncate binary pipes... /bin/dd bs=4096 count=1
checking for mt... no
checking if : is a manifest tool... no
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for sys/time.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... yes
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/bin/ld -m elf_x86_64) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking for shl_load... no
checking for shl_load in -ldld... no
checking for dlopen... yes
checking whether a program can dlopen itself... yes
checking whether a statically linked program can dlopen itself... no
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
checking for msgfmt... (cached) /bin/msgfmt
checking for gmsgfmt... (cached) /bin/msgfmt
checking for xgettext... (cached) /bin/xgettext
checking for msgmerge... (cached) /bin/msgmerge
checking for ld used by GCC... /bin/ld -m elf_x86_64
checking if the linker (/bin/ld -m elf_x86_64) is GNU ld... yes
checking for shared library run path origin... done
checking for CFPreferencesCopyAppValue... no
checking for CFLocaleCopyCurrent... no
checking for GNU gettext in libc... yes
checking whether to use NLS... yes
checking where the gettext function comes from... libc
checking for locale.h... yes
checking for dlopen... (cached) yes
stock buttons enabled by configure options
checking for pkg-config... /bin/pkg-config
checking pkg-config is at least version 0.16... yes
checking for GTK+ - version >= 3.24.12... yes (version 3.24.48)
checking for pilot-link header files... found at /usr/include
checking for pilot library files... found at /lib
checking for gethostent... yes
checking for setsockopt... yes
checking to see if I can compile a pilot link program... ok
checking if I can run a pilot-link program... ok
checking pilot-link version... pi-version indicates 0.12.5
pilot-link has USB
pilot-link has card support (>12.0)
pilot-link has Calendar support (>12.5)
checking for gpgrt-config... /bin/gpgrt-config
configure: Use gpgrt-config as libgcrypt-config
checking for LIBGCRYPT - version >= 1.2.0... yes (1.11.0)
checking LIBGCRYPT API version... okay
checking for gcry_md_hash_buffer in -lgcrypt... yes
checking for fcntl.h... yes
checking for langinfo.h... yes
checking for locale.h... (cached) yes
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking for sys/socket.h... yes
checking for sys/time.h... (cached) yes
checking for sys/wait.h... yes
checking for unistd.h... (cached) yes
checking for utime.h... yes
checking for netinet/in.h... yes
checking for termio.h... yes
checking for openssl/md5.h... yes
checking for openssl/des.h... yes
checking for inline... inline
checking for pid_t... yes
checking for size_t... yes
checking for uid_t... yes
checking for gid_t... yes
checking whether struct tm is in sys/time.h or time.h... time.h
checking for _NL_TIME_FIRST_WEEKDAY... yes
checking return type of signal handlers... void
checking for working strcoll... yes
checking for setenv... yes
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating Expense/Makefile
config.status: creating jpsqlite/Makefile
config.status: creating SyncTime/Makefile
config.status: creating KeyRing/Makefile
config.status: creating dialer/Makefile
config.status: creating m4/Makefile
config.status: creating po/Makefile.in
config.status: creating icons/Makefile
config.status: creating docs/Makefile
config.status: creating empty/Makefile
config.status: creating jpilot.spec
config.status: creating SlackBuild
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
config.status: executing po-directories commands
config.status: creating po/POTFILES
config.status: creating po/Makefile
config.status: executing po/stamp-it commands

This package is configured for the following features:
------------------------------------------------------
Compiling with plugin support..........   yes
Compiling with private record support..   yes
Compiling with Datebk support..........   yes
Compiling with Manana support..........   yes
Compiling with Prometheon support......   no
Compiling Expense plugin...............   yes
Compiling jpsqlite plugin..............   yes
Compiling SyncTime plugin..............   yes
Compiling KeyRing plugin...............   yes
Compiling dialer add-on................   yes
Cryptographic library..................   libgcrypt
GTK-3 support..........................   yes
Stock buttons (icons on buttons in GUI)   yes
NLS support (foreign languages)........   yes
Compiler Options.......................   -g -O2
Prefix directory.......................   /usr/local
pilot-link headers.....................   /usr/include
USB support enabled....................   yes
pilot-link version found...............   0.12.5

Now type make to compile

        real 10.44s
        user 6.26s
        sys 0
        swapped 0
        total space 0

configure and Makefile have now been produced.

Below two statements are only required on Arch Linux.

klm@chieftec /tmp/jpilot: sed 's/return Contact_add_blob(c, blob);/return Contact_add_blob(c, (void*)blob);/' jp-contact.c > /tmp/jp-contact.c
klm@chieftec /tmp/jpilot: mv /tmp/jp-contact.c .
mv: overwrite './jp-contact.c'? y

Finally, just call make.

klm@chieftec /tmp/jpilot: time make
make  all-recursive
make[1]: Entering directory '/tmp/jpilot'
Making all in m4
make[2]: Entering directory '/tmp/jpilot/m4'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/jpilot/m4'
Making all in po
make[2]: Entering directory '/tmp/jpilot/po'
file=`echo ca | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file ca.po
file=`echo cs | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file cs.po
file=`echo da | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file da.po
file=`echo de | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file de.po
file=`echo es | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file es.po
file=`echo fr | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file fr.po
file=`echo it | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file it.po
file=`echo ja | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file ja.po
file=`echo ko | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file ko.po
file=`echo nl | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file nl.po
file=`echo nb | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file nb.po
file=`echo pt_BR | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file pt_BR.po
file=`echo ru | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file ru.po
file=`echo rw | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file rw.po
file=`echo sv | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file sv.po
file=`echo tr | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file tr.po
file=`echo uk | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file uk.po
file=`echo vi | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file vi.po
file=`echo zh_CN | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file zh_CN.po
file=`echo zh_TW | sed 's,.*/,,'`.gmo \
  && rm -f $file && /bin/msgfmt -o $file zh_TW.po
make[2]: Leaving directory '/tmp/jpilot/po'
Making all in Expense
make[2]: Entering directory '/tmp/jpilot/Expense'
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -MT libexpense_la-expense.lo -MD -MP -MF .deps/libexpense_la-expense.Tpo -c -o libexpense_la-expense.lo `test -f 'expense.c' || echo './'`expense.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -MT libexpense_la-expense.lo -MD -MP -MF .deps/libexpense_la-expense.Tpo -c expense.c  -fPIC -DPIC -o .libs/libexpense_la-expense.o
mv -f .deps/libexpense_la-expense.Tpo .deps/libexpense_la-expense.Plo
/bin/sh ../libtool  --tag=CC   --mode=link gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -module -avoid-version  -o libexpense.la -rpath /usr/local/lib/jpilot/plugins libexpense_la-expense.lo -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0
libtool: link: gcc -shared  -fPIC -DPIC  .libs/libexpense_la-expense.o   -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0  -g -O2   -pthread -Wl,-soname -Wl,libexpense.so -o .libs/libexpense.so
libtool: link: ( cd ".libs" && rm -f "libexpense.la" && ln -s "../libexpense.la" "libexpense.la" )
make[2]: Leaving directory '/tmp/jpilot/Expense'
Making all in jpsqlite
make[2]: Entering directory '/tmp/jpilot/jpsqlite'
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -MT libjpsqlite_la-jpsqlite.lo -MD -MP -MF .deps/libjpsqlite_la-jpsqlite.Tpo -c -o libjpsqlite_la-jpsqlite.lo `test -f 'jpsqlite.c' || echo './'`jpsqlite.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -MT libjpsqlite_la-jpsqlite.lo -MD -MP -MF .deps/libjpsqlite_la-jpsqlite.Tpo -c jpsqlite.c  -fPIC -DPIC -o .libs/libjpsqlite_la-jpsqlite.o
mv -f .deps/libjpsqlite_la-jpsqlite.Tpo .deps/libjpsqlite_la-jpsqlite.Plo
/bin/sh ../libtool  --tag=CC   --mode=link gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -module -avoid-version  -o libjpsqlite.la -rpath /usr/local/lib/jpilot/plugins libjpsqlite_la-jpsqlite.lo -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3
libtool: link: gcc -shared  -fPIC -DPIC  .libs/libjpsqlite_la-jpsqlite.o   -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3  -g -O2   -pthread -Wl,-soname -Wl,libjpsqlite.so -o .libs/libjpsqlite.so
libtool: link: ( cd ".libs" && rm -f "libjpsqlite.la" && ln -s "../libjpsqlite.la" "libjpsqlite.la" )
make[2]: Leaving directory '/tmp/jpilot/jpsqlite'
Making all in SyncTime
make[2]: Entering directory '/tmp/jpilot/SyncTime'
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -MT libsynctime_la-synctime.lo -MD -MP -MF .deps/libsynctime_la-synctime.Tpo -c -o libsynctime_la-synctime.lo `test -f 'synctime.c' || echo './'`synctime.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -MT libsynctime_la-synctime.lo -MD -MP -MF .deps/libsynctime_la-synctime.Tpo -c synctime.c  -fPIC -DPIC -o .libs/libsynctime_la-synctime.o
mv -f .deps/libsynctime_la-synctime.Tpo .deps/libsynctime_la-synctime.Plo
/bin/sh ../libtool  --tag=CC   --mode=link gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -module -avoid-version  -o libsynctime.la -rpath /usr/local/lib/jpilot/plugins libsynctime_la-synctime.lo -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0
libtool: link: gcc -shared  -fPIC -DPIC  .libs/libsynctime_la-synctime.o   -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0  -g -O2   -pthread -Wl,-soname -Wl,libsynctime.so -o .libs/libsynctime.so
libtool: link: ( cd ".libs" && rm -f "libsynctime.la" && ln -s "../libsynctime.la" "libsynctime.la" )
make[2]: Leaving directory '/tmp/jpilot/SyncTime'
Making all in KeyRing
make[2]: Entering directory '/tmp/jpilot/KeyRing'
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I..    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread  -I.. -g -O2 -MT libkeyring_la-keyring.lo -MD -MP -MF .deps/libkeyring_la-keyring.Tpo -c -o libkeyring_la-keyring.lo `test -f 'keyring.c' || echo './'`keyring.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -I.. -g -O2 -MT libkeyring_la-keyring.lo -MD -MP -MF .deps/libkeyring_la-keyring.Tpo -c keyring.c  -fPIC -DPIC -o .libs/libkeyring_la-keyring.o
mv -f .deps/libkeyring_la-keyring.Tpo .deps/libkeyring_la-keyring.Plo
/bin/sh ../libtool  --tag=CC   --mode=link gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread  -I.. -g -O2 -module -avoid-version  -o libkeyring.la -rpath /usr/local/lib/jpilot/plugins libkeyring_la-keyring.lo -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lgcrypt
libtool: link: gcc -shared  -fPIC -DPIC  .libs/libkeyring_la-keyring.o   -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lgcrypt  -g -O2   -pthread -Wl,-soname -Wl,libkeyring.so -o .libs/libkeyring.so
libtool: link: ( cd ".libs" && rm -f "libkeyring.la" && ln -s "../libkeyring.la" "libkeyring.la" )
make[2]: Leaving directory '/tmp/jpilot/KeyRing'
Making all in dialer
make[2]: Entering directory '/tmp/jpilot/dialer'
gcc -DHAVE_CONFIG_H -I. -I..     -g -O2 -MT jpilot-dial.o -MD -MP -MF .deps/jpilot-dial.Tpo -c -o jpilot-dial.o jpilot-dial.c
mv -f .deps/jpilot-dial.Tpo .deps/jpilot-dial.Po
/bin/sh ../libtool  --tag=CC   --mode=link gcc  -g -O2   -o jpilot-dial jpilot-dial.o -lm
libtool: link: gcc -g -O2 -o jpilot-dial jpilot-dial.o  -lm
make[2]: Leaving directory '/tmp/jpilot/dialer'
Making all in icons
make[2]: Entering directory '/tmp/jpilot/icons'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/jpilot/icons'
Making all in docs
make[2]: Entering directory '/tmp/jpilot/docs'
sed -e 's|@DOCDIR@|/usr/local/share/doc/jpilot|g' jpilot.man > jpilot.1
sed -e 's|@DOCDIR@|/usr/local/share/doc/jpilot|g' jpilot-dial.man > jpilot-dial.1
sed -e 's|@DOCDIR@|/usr/local/share/doc/jpilot|g' jpilot-sync.man > jpilot-sync.1
sed -e 's|@DOCDIR@|/usr/local/share/doc/jpilot|g' jpilot-dump.man > jpilot-dump.1
sed -e 's|@DOCDIR@|/usr/local/share/doc/jpilot|g' jpilot-merge.man > jpilot-merge.1
make[2]: Leaving directory '/tmp/jpilot/docs'
Making all in empty
make[2]: Entering directory '/tmp/jpilot/empty'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/jpilot/empty'
make[2]: Entering directory '/tmp/jpilot'
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT address.o -MD -MP -MF .deps/address.Tpo -c -o address.o address.c
mv -f .deps/address.Tpo .deps/address.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT address_gui.o -MD -MP -MF .deps/address_gui.Tpo -c -o address_gui.o address_gui.c
mv -f .deps/address_gui.Tpo .deps/address_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT alarms.o -MD -MP -MF .deps/alarms.Tpo -c -o alarms.o alarms.c
mv -f .deps/alarms.Tpo .deps/alarms.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT category.o -MD -MP -MF .deps/category.Tpo -c -o category.o category.c
mv -f .deps/category.Tpo .deps/category.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT calendar.o -MD -MP -MF .deps/calendar.Tpo -c -o calendar.o calendar.c
mv -f .deps/calendar.Tpo .deps/calendar.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT contact.o -MD -MP -MF .deps/contact.Tpo -c -o contact.o contact.c
mv -f .deps/contact.Tpo .deps/contact.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT cp1250.o -MD -MP -MF .deps/cp1250.Tpo -c -o cp1250.o cp1250.c
mv -f .deps/cp1250.Tpo .deps/cp1250.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT dat.o -MD -MP -MF .deps/dat.Tpo -c -o dat.o dat.c
mv -f .deps/dat.Tpo .deps/dat.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT datebook.o -MD -MP -MF .deps/datebook.Tpo -c -o datebook.o datebook.c
mv -f .deps/datebook.Tpo .deps/datebook.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT datebook_gui.o -MD -MP -MF .deps/datebook_gui.Tpo -c -o datebook_gui.o datebook_gui.c
mv -f .deps/datebook_gui.Tpo .deps/datebook_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT dialer.o -MD -MP -MF .deps/dialer.Tpo -c -o dialer.o dialer.c
mv -f .deps/dialer.Tpo .deps/dialer.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT export_gui.o -MD -MP -MF .deps/export_gui.Tpo -c -o export_gui.o export_gui.c
mv -f .deps/export_gui.Tpo .deps/export_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT font.o -MD -MP -MF .deps/font.Tpo -c -o font.o font.c
mv -f .deps/font.Tpo .deps/font.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT import_gui.o -MD -MP -MF .deps/import_gui.Tpo -c -o import_gui.o import_gui.c
mv -f .deps/import_gui.Tpo .deps/import_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT install_gui.o -MD -MP -MF .deps/install_gui.Tpo -c -o install_gui.o install_gui.c
mv -f .deps/install_gui.Tpo .deps/install_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT install_user.o -MD -MP -MF .deps/install_user.Tpo -c -o install_user.o install_user.c
mv -f .deps/install_user.Tpo .deps/install_user.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT japanese.o -MD -MP -MF .deps/japanese.Tpo -c -o japanese.o japanese.c
mv -f .deps/japanese.Tpo .deps/japanese.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT jpilot.o -MD -MP -MF .deps/jpilot.Tpo -c -o jpilot.o jpilot.c
mv -f .deps/jpilot.Tpo .deps/jpilot.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT jp-contact.o -MD -MP -MF .deps/jp-contact.Tpo -c -o jp-contact.o jp-contact.c
mv -f .deps/jp-contact.Tpo .deps/jp-contact.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT libplugin.o -MD -MP -MF .deps/libplugin.Tpo -c -o libplugin.o libplugin.c
mv -f .deps/libplugin.Tpo .deps/libplugin.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT libsqlite.o -MD -MP -MF .deps/libsqlite.Tpo -c -o libsqlite.o libsqlite.c
mv -f .deps/libsqlite.Tpo .deps/libsqlite.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT log.o -MD -MP -MF .deps/log.Tpo -c -o log.o log.c
mv -f .deps/log.Tpo .deps/log.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT memo.o -MD -MP -MF .deps/memo.Tpo -c -o memo.o memo.c
mv -f .deps/memo.Tpo .deps/memo.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT memo_gui.o -MD -MP -MF .deps/memo_gui.Tpo -c -o memo_gui.o memo_gui.c
mv -f .deps/memo_gui.Tpo .deps/memo_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT monthview_gui.o -MD -MP -MF .deps/monthview_gui.Tpo -c -o monthview_gui.o monthview_gui.c
mv -f .deps/monthview_gui.Tpo .deps/monthview_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT otherconv.o -MD -MP -MF .deps/otherconv.Tpo -c -o otherconv.o otherconv.c
mv -f .deps/otherconv.Tpo .deps/otherconv.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT password.o -MD -MP -MF .deps/password.Tpo -c -o password.o password.c
mv -f .deps/password.Tpo .deps/password.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT pidfile.o -MD -MP -MF .deps/pidfile.Tpo -c -o pidfile.o pidfile.c
mv -f .deps/pidfile.Tpo .deps/pidfile.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT plugins.o -MD -MP -MF .deps/plugins.Tpo -c -o plugins.o plugins.c
mv -f .deps/plugins.Tpo .deps/plugins.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT prefs.o -MD -MP -MF .deps/prefs.Tpo -c -o prefs.o prefs.c
mv -f .deps/prefs.Tpo .deps/prefs.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT prefs_gui.o -MD -MP -MF .deps/prefs_gui.Tpo -c -o prefs_gui.o prefs_gui.c
mv -f .deps/prefs_gui.Tpo .deps/prefs_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT print.o -MD -MP -MF .deps/print.Tpo -c -o print.o print.c
mv -f .deps/print.Tpo .deps/print.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT print_gui.o -MD -MP -MF .deps/print_gui.Tpo -c -o print_gui.o print_gui.c
mv -f .deps/print_gui.Tpo .deps/print_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT print_headers.o -MD -MP -MF .deps/print_headers.Tpo -c -o print_headers.o print_headers.c
mv -f .deps/print_headers.Tpo .deps/print_headers.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT print_logo.o -MD -MP -MF .deps/print_logo.Tpo -c -o print_logo.o print_logo.c
mv -f .deps/print_logo.Tpo .deps/print_logo.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT restore_gui.o -MD -MP -MF .deps/restore_gui.Tpo -c -o restore_gui.o restore_gui.c
mv -f .deps/restore_gui.Tpo .deps/restore_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT russian.o -MD -MP -MF .deps/russian.Tpo -c -o russian.o russian.c
mv -f .deps/russian.Tpo .deps/russian.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT search_gui.o -MD -MP -MF .deps/search_gui.Tpo -c -o search_gui.o search_gui.c
mv -f .deps/search_gui.Tpo .deps/search_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT sync.o -MD -MP -MF .deps/sync.Tpo -c -o sync.o sync.c
mv -f .deps/sync.Tpo .deps/sync.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT todo.o -MD -MP -MF .deps/todo.Tpo -c -o todo.o todo.c
mv -f .deps/todo.Tpo .deps/todo.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT todo_gui.o -MD -MP -MF .deps/todo_gui.Tpo -c -o todo_gui.o todo_gui.c
mv -f .deps/todo_gui.Tpo .deps/todo_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT utils.o -MD -MP -MF .deps/utils.Tpo -c -o utils.o utils.c
mv -f .deps/utils.Tpo .deps/utils.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT weekview_gui.o -MD -MP -MF .deps/weekview_gui.Tpo -c -o weekview_gui.o weekview_gui.c
mv -f .deps/weekview_gui.Tpo .deps/weekview_gui.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT icons.o -MD -MP -MF .deps/icons.Tpo -c -o icons.o `test -f 'icons/icons.c' || echo './'`icons/icons.c
mv -f .deps/icons.Tpo .deps/icons.Po
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT jpsqlite.o -MD -MP -MF .deps/jpsqlite.Tpo -c -o jpsqlite.o `test -f 'jpsqlite/jpsqlite.c' || echo './'`jpsqlite/jpsqlite.c
mv -f .deps/jpsqlite.Tpo .deps/jpsqlite.Po
/bin/sh ./libtool  --tag=CC   --mode=link gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -export-dynamic  -o jpilot address.o address_gui.o alarms.o category.o calendar.o contact.o cp1250.o dat.o datebook.o datebook_gui.o dialer.o export_gui.o font.o import_gui.o install_gui.o install_user.o japanese.o jpilot.o jp-contact.o libplugin.o libsqlite.o log.o memo.o memo_gui.o monthview_gui.o otherconv.o password.o pidfile.o plugins.o prefs.o prefs_gui.o print.o print_gui.o print_headers.o print_logo.o restore_gui.o russian.o search_gui.o sync.o todo.o todo_gui.o utils.o weekview_gui.o icons.o jpsqlite.o -L/lib -lpisock -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3
libtool: link: gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -o jpilot address.o address_gui.o alarms.o category.o calendar.o contact.o cp1250.o dat.o datebook.o datebook_gui.o dialer.o export_gui.o font.o import_gui.o install_gui.o install_user.o japanese.o jpilot.o jp-contact.o libplugin.o libsqlite.o log.o memo.o memo_gui.o monthview_gui.o otherconv.o password.o pidfile.o plugins.o prefs.o prefs_gui.o print.o print_gui.o print_headers.o print_logo.o restore_gui.o russian.o search_gui.o sync.o todo.o todo_gui.o utils.o weekview_gui.o icons.o jpsqlite.o -Wl,--export-dynamic  -L/lib -lpisock -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3 -pthread
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT jpilot-dump.o -MD -MP -MF .deps/jpilot-dump.Tpo -c -o jpilot-dump.o jpilot-dump.c
mv -f .deps/jpilot-dump.Tpo .deps/jpilot-dump.Po
/bin/sh ./libtool  --tag=CC   --mode=link gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2   -o jpilot-dump address.o calendar.o category.o contact.o cp1250.o datebook.o japanese.o jpilot-dump.o libplugin.o libsqlite.o log.o memo.o otherconv.o password.o plugins.o prefs.o russian.o todo.o utils.o jp-contact.o -L/lib -lpisock -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3
libtool: link: gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -o jpilot-dump address.o calendar.o category.o contact.o cp1250.o datebook.o japanese.o jpilot-dump.o libplugin.o libsqlite.o log.o memo.o otherconv.o password.o plugins.o prefs.o russian.o todo.o utils.o jp-contact.o  -L/lib -lpisock -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3 -pthread
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT jpilot-sync.o -MD -MP -MF .deps/jpilot-sync.Tpo -c -o jpilot-sync.o jpilot-sync.c
mv -f .deps/jpilot-sync.Tpo .deps/jpilot-sync.Po
/bin/sh ./libtool  --tag=CC   --mode=link gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -export-dynamic  -o jpilot-sync cp1250.o category.o jpilot-sync.o japanese.o libplugin.o libsqlite.o datebook.o calendar.o log.o otherconv.o password.o plugins.o prefs.o russian.o sync.o utils.o jp-contact.o -L/lib -lpisock -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3
libtool: link: gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -o jpilot-sync cp1250.o category.o jpilot-sync.o japanese.o libplugin.o libsqlite.o datebook.o calendar.o log.o otherconv.o password.o plugins.o prefs.o russian.o sync.o utils.o jp-contact.o -Wl,--export-dynamic  -L/lib -lpisock -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3 -pthread
gcc -DHAVE_CONFIG_H -I.    -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -MT jpilot-merge.o -MD -MP -MF .deps/jpilot-merge.Tpo -c -o jpilot-merge.o jpilot-merge.c
mv -f .deps/jpilot-merge.Tpo .deps/jpilot-merge.Po
/bin/sh ./libtool  --tag=CC   --mode=link gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -pthread -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2   -o jpilot-merge cp1250.o japanese.o libplugin.o libsqlite.o datebook.o calendar.o password.o log.o jpilot-merge.o otherconv.o plugins.o prefs.o russian.o utils.o -L/lib -lpisock -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3
libtool: link: gcc -I/usr/include -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cloudproviders -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/atk-1.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/fribidi -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/gio-unix-2.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/sysprof-6 -DLOCALEDIR=\"/usr/local/share/locale\" -g -O2 -o jpilot-merge cp1250.o japanese.o libplugin.o libsqlite.o datebook.o calendar.o password.o log.o jpilot-merge.o otherconv.o plugins.o prefs.o russian.o utils.o  -L/lib -lpisock -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0 -lglib-2.0 -lsqlite3 -pthread
make[2]: Leaving directory '/tmp/jpilot'
make[1]: Leaving directory '/tmp/jpilot'
        real 17.94s
        user 15.72s
        sys 0
        swapped 0
        total space 0

Checking binary.

klm@chieftec /tmp/jpilot: ldd jpilot
        linux-vdso.so.1 (0x0000763000e01000)
        libpisock.so.9 => /usr/lib/libpisock.so.9 (0x0000763000cc2000)
        libgtk-3.so.0 => /usr/lib/libgtk-3.so.0 (0x0000763000400000)
        libgdk-3.so.0 => /usr/lib/libgdk-3.so.0 (0x0000763000bd6000)
        libz.so.1 => /usr/lib/libz.so.1 (0x00007630003e7000)
        libpangocairo-1.0.so.0 => /usr/lib/libpangocairo-1.0.so.0 (0x0000763000bc6000)
        libpango-1.0.so.0 => /usr/lib/libpango-1.0.so.0 (0x000076300037c000)
        libharfbuzz.so.0 => /usr/lib/libharfbuzz.so.0 (0x0000763000257000)
        libatk-1.0.so.0 => /usr/lib/libatk-1.0.so.0 (0x0000763000231000)
        libcairo-gobject.so.2 => /usr/lib/libcairo-gobject.so.2 (0x0000763000228000)
        libcairo.so.2 => /usr/lib/libcairo.so.2 (0x00007630000f1000)
        libgdk_pixbuf-2.0.so.0 => /usr/lib/libgdk_pixbuf-2.0.so.0 (0x00007630000ac000)
        libgio-2.0.so.0 => /usr/lib/libgio-2.0.so.0 (0x0000762fffedd000)
        libgobject-2.0.so.0 => /usr/lib/libgobject-2.0.so.0 (0x0000762fffe7d000)
        libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x0000762fffd2d000)
        libsqlite3.so.0 => /usr/lib/libsqlite3.so.0 (0x0000762fffbbc000)
        libc.so.6 => /usr/lib/libc.so.6 (0x0000762fff9ca000)
        libusb-0.1.so.4 => /usr/lib/libusb-0.1.so.4 (0x0000762fff9c2000)
        libpthread.so.0 => /usr/lib/libpthread.so.0 (0x0000762fff9bd000)
        libbluetooth.so.3 => /usr/lib/libbluetooth.so.3 (0x0000762fff98f000)
        libgmodule-2.0.so.0 => /usr/lib/libgmodule-2.0.so.0 (0x0000762fff988000)
        libpangoft2-1.0.so.0 => /usr/lib/libpangoft2-1.0.so.0 (0x0000762fff96b000)
        libfontconfig.so.1 => /usr/lib/libfontconfig.so.1 (0x0000762fff91b000)
        libfribidi.so.0 => /usr/lib/libfribidi.so.0 (0x0000762fff8fb000)
        libepoxy.so.0 => /usr/lib/libepoxy.so.0 (0x0000762fff7ee000)
        libm.so.6 => /usr/lib/libm.so.6 (0x0000762fff6f4000)
        libXi.so.6 => /usr/lib/libXi.so.6 (0x0000762fff6e1000)
        libX11.so.6 => /usr/lib/libX11.so.6 (0x0000762fff5a0000)
        libatk-bridge-2.0.so.0 => /usr/lib/libatk-bridge-2.0.so.0 (0x0000762fff566000)
        libcloudproviders.so.0 => /usr/lib/libcloudproviders.so.0 (0x0000762fff54d000)
        libtinysparql-3.0.so.0 => /usr/lib/libtinysparql-3.0.so.0 (0x0000762fff47c000)
        libXfixes.so.3 => /usr/lib/libXfixes.so.3 (0x0000762fff472000)
        libxkbcommon.so.0 => /usr/lib/libxkbcommon.so.0 (0x0000762fff41b000)
        libwayland-client.so.0 => /usr/lib/libwayland-client.so.0 (0x0000762fff40c000)
        libwayland-cursor.so.0 => /usr/lib/libwayland-cursor.so.0 (0x0000762fff402000)
        libwayland-egl.so.1 => /usr/lib/libwayland-egl.so.1 (0x0000762fff3fd000)
        libXext.so.6 => /usr/lib/libXext.so.6 (0x0000762fff3e6000)
        libXcursor.so.1 => /usr/lib/libXcursor.so.1 (0x0000762fff3d9000)
        libXdamage.so.1 => /usr/lib/libXdamage.so.1 (0x0000762fff3d4000)
        libXcomposite.so.1 => /usr/lib/libXcomposite.so.1 (0x0000762fff3cf000)
        libXrandr.so.2 => /usr/lib/libXrandr.so.2 (0x0000762fff3c2000)
        libXinerama.so.1 => /usr/lib/libXinerama.so.1 (0x0000762fff3bd000)
        libthai.so.0 => /usr/lib/libthai.so.0 (0x0000762fff3b0000)
        libfreetype.so.6 => /usr/lib/libfreetype.so.6 (0x0000762fff2e6000)
        libgraphite2.so.3 => /usr/lib/libgraphite2.so.3 (0x0000762fff2c4000)
        libpng16.so.16 => /usr/lib/libpng16.so.16 (0x0000762fff28a000)
        libXrender.so.1 => /usr/lib/libXrender.so.1 (0x0000762fff27e000)
        libxcb.so.1 => /usr/lib/libxcb.so.1 (0x0000762fff251000)
        libxcb-render.so.0 => /usr/lib/libxcb-render.so.0 (0x0000762fff242000)
        libxcb-shm.so.0 => /usr/lib/libxcb-shm.so.0 (0x0000762fff23d000)
        libpixman-1.so.0 => /usr/lib/libpixman-1.so.0 (0x0000762fff197000)
        libjpeg.so.8 => /usr/lib/libjpeg.so.8 (0x0000762fff0f9000)
        libtiff.so.6 => /usr/lib/libtiff.so.6 (0x0000762fff06c000)
        libmount.so.1 => /usr/lib/libmount.so.1 (0x0000762fff01a000)
        libffi.so.8 => /usr/lib/libffi.so.8 (0x0000762fff00f000)
        libpcre2-8.so.0 => /usr/lib/libpcre2-8.so.0 (0x0000762ffef63000)
        /lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2 (0x0000763000e03000)
        libexpat.so.1 => /usr/lib/libexpat.so.1 (0x0000762ffef39000)
        libatspi.so.0 => /usr/lib/libatspi.so.0 (0x0000762ffef02000)
        libdbus-1.so.3 => /usr/lib/libdbus-1.so.3 (0x0000762ffeead000)
        libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x0000762ffee7f000)
        libjson-glib-1.0.so.0 => /usr/lib/libjson-glib-1.0.so.0 (0x0000762ffee55000)
        libxml2.so.2 => /usr/lib/libxml2.so.2 (0x0000762ffed08000)
        libdatrie.so.1 => /usr/lib/libdatrie.so.1 (0x0000762ffecff000)
        libbz2.so.1.0 => /usr/lib/libbz2.so.1.0 (0x0000762ffecea000)
        libbrotlidec.so.1 => /usr/lib/libbrotlidec.so.1 (0x0000762ffecdb000)
        libXau.so.6 => /usr/lib/libXau.so.6 (0x0000762ffecd6000)
        libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0x0000762ffecce000)
        libzstd.so.1 => /usr/lib/libzstd.so.1 (0x0000762ffebe9000)
        liblzma.so.5 => /usr/lib/liblzma.so.5 (0x0000762ffebb4000)
        libjbig.so.2.1 => /usr/lib/libjbig.so.2.1 (0x0000762ffeba6000)
        libblkid.so.1 => /usr/lib/libblkid.so.1 (0x0000762ffeb6d000)
        libsystemd.so.0 => /usr/lib/libsystemd.so.0 (0x0000762ffea4a000)
        libicuuc.so.76 => /usr/lib/libicuuc.so.76 (0x0000762ffe800000)
        libbrotlicommon.so.1 => /usr/lib/libbrotlicommon.so.1 (0x0000762ffea25000)
        libcap.so.2 => /usr/lib/libcap.so.2 (0x0000762ffea19000)
        libicudata.so.76 => /usr/lib/libicudata.so.76 (0x0000762ffc800000)
        libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x0000762ffc400000)
klm@chieftec /tmp/jpilot:

2. Pilot-Link

Unfortunately the AUR package for pilot-link is broken, i.e., it no longer builds. This is a known problem: https://github.com/desrod/pilot-link/issues/18. If you have the built package, though, then it's just fine.

Download the compressed source tar-ball from here: https://mirrors.slackware.com/slackware/slackware-14.1/source/l/pilot-link/

I edited the configure file and changed -Wall to -fpermissive for CFLAGS. Otherwise I couldn't compile the source.

If you no longer sync from any handheld device, then you don't need to build pilot-link. You just need the include directory and copy it accordingly because the include files from pilot-link are required for J-Pilot.

klm@ryzen /tmp: tar jxf ~/D/pilot-link-0.12.5.tar.bz2
klm@ryzen /tmp: cd pilot-link-0.12.5
klm@ryzen /tmp/pilot-link-0.12.5: ls -a
./          autogen.sh*    config.h.in   COPYING      doc/         libpisock/  Makefile.am  pilot-link.m4        popt/   ylwrap*
../         bindings/      config.sub*   COPYING.LIB  include/     libpisync/  Makefile.in  pilot-link.m4.in     README
aclocal.m4  ChangeLog      configure*    darwin/      INSTALL      ltmain.sh*  missing*     pilot-link.pc.in     src/
AUTHORS     config.guess*  configure.ac  depcomp*     install-sh*  m4/         NEWS         pilot-link-pp.pc.in  tests/

Change configure file and check nothing has been forgotten.

klm@ryzen /tmp/pilot-link-0.12.5: v configure
klm@ryzen /tmp/pilot-link-0.12.5: rg -l Wall
ChangeLog
bindings/Perl/h2xs-pilot-link
bindings/Perl/Pilot.c
configure.ac
bindings/Java/Makefile
configure
src/pilot-install-expenses
klm@ryzen /tmp/pilot-link-0.12.5: v configure

Now call configure.

klm@ryzen /tmp/pilot-link-0.12.5: time ./configure
checking whether to enable maintainer-specific portions of Makefiles... no
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
checking for a BSD-compatible install... /bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for style of include used by make... GNU
checking dependency style of gcc... gcc3
checking for g77... no
checking for g77-3.2... no
checking for g77-3.3... no
checking for fl32... no
checking for f77... no
checking for fort77... no
checking for xlf... no
checking for f90... no
checking for xlf90... no
checking whether we are using the GNU Fortran 77 compiler... no
checking whether  accepts -g... no
checking for a sed that does not truncate output... /bin/sed
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for fgrep... /bin/grep -F
checking for ld used by gcc... /bin/ld
checking if the linker (/bin/ld) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /bin/nm -B
checking the name lister (/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 1572864
checking whether the shell understands some XSI constructs... yes
checking whether the shell understands "+="... yes
checking for /bin/ld option to reload object files... -r
checking for objdump... objdump
checking how to recognize dependent libraries... pass_all
checking for ar... ar
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /bin/nm -B output from gcc object... ok
checking how to run the C preprocessor... gcc -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for g77... no
checking for xlf... no
checking for f77... no
checking for frt... no
checking for pgf77... no
checking for cf77... no
checking for fort77... no
checking for fl32... no
checking for af77... no
checking for xlf90... no
checking for f90... no
checking for pgf90... no
checking for pghpf... no
checking for epcf90... no
checking for gfortran... gfortran
checking whether we are using the GNU Fortran 77 compiler... (cached) no
checking whether gfortran accepts -g... (cached) no
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -fPIC -DPIC
checking if gcc PIC flag -fPIC -DPIC works... yes
checking if gcc static flag -static works... yes
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/bin/ld -m elf_x86_64) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking for gfortran option to produce PIC...
checking if gfortran static flag  works... yes
checking if gfortran supports -c -o file.o... yes
checking if gfortran supports -c -o file.o... (cached) yes
checking whether the gfortran linker (/bin/ld -m elf_x86_64) supports shared libraries... yes
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking for bison... bison -y
checking for ANSI C header files... (cached) yes
checking for an ANSI C-conforming const... yes
checking whether time.h and sys/time.h may both be included... yes
checking whether struct tm is in sys/time.h or time.h... time.h
checking whether gcc needs -traditional... no
checking return type of signal handlers... void
checking dirent.h usability... yes
checking dirent.h presence... yes
checking for dirent.h... yes
checking errno.h usability... yes
checking errno.h presence... yes
checking for errno.h... yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking for inttypes.h... (cached) yes
checking for memory.h... (cached) yes
checking netdb.h usability... yes
checking netdb.h presence... yes
checking for netdb.h... yes
checking netinet/in.h usability... yes
checking netinet/in.h presence... yes
checking for netinet/in.h... yes
checking regex.h usability... yes
checking regex.h presence... yes
checking for regex.h... yes
checking for stdint.h... (cached) yes
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking for strings.h... (cached) yes
checking sys/ioctl_compat.h usability... no
checking sys/ioctl_compat.h presence... no
checking for sys/ioctl_compat.h... no
checking sys/ioctl.h usability... yes
checking sys/ioctl.h presence... yes
checking for sys/ioctl.h... yes
checking sys/malloc.h usability... no
checking sys/malloc.h presence... no
checking for sys/malloc.h... no
checking sys/select.h usability... yes
checking sys/select.h presence... yes
checking for sys/select.h... yes
checking sys/sockio.h usability... no
checking sys/sockio.h presence... no
checking for sys/sockio.h... no
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking sys/utsname.h usability... yes
checking sys/utsname.h presence... yes
checking for sys/utsname.h... yes
checking for unistd.h... (cached) yes
checking IOKit/IOBSD.h usability... no
checking IOKit/IOBSD.h presence... no
checking for IOKit/IOBSD.h... no
checking ifaddrs.h usability... yes
checking ifaddrs.h presence... yes
checking for ifaddrs.h... yes
checking for inttypes.h... (cached) yes
checking for atexit... yes
checking for cfmakeraw... yes
checking for cfsetispeed... yes
checking for cfsetospeed... yes
checking for cfsetspeed... yes
checking for dup2... yes
checking for gethostname... yes
checking for inet_aton... yes
checking for malloc... yes
checking for memcpy... yes
checking for memmove... yes
checking for putenv... yes
checking for sigaction... yes
checking for snprintf... yes
checking for strchr... yes
checking for strdup... yes
checking for strtok... yes
checking for strtoul... yes
checking for strerror... yes
checking for uname... yes
checking for connect... yes
checking for gethostbyname... yes
checking for main in -linet... no
checking for cispeed and cospeed members of struct termios... yes
checking for socklen_t... yes
checking whether to enable userland conduits... no
checking for pkg-config... /bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for BLUEZ... yes
checking for libiconv in -liconv... no
checking for iconv... yes
checking for gnu_get_libc_version... yes
checking if system iconv handles CP1252... yes
checking if perl was enabled... no
Runtime debugging is enabled
configure: creating ./config.status
config.status: creating Makefile
config.status: creating pilot-link.m4
config.status: creating pilot-link.pc
config.status: creating pilot-link-pp.pc
config.status: creating libpisock/Makefile
config.status: creating libpisync/Makefile
config.status: creating include/Makefile
config.status: creating include/pi-version.h
config.status: creating popt/Makefile
config.status: creating src/Makefile
config.status: creating src/prc/Makefile
config.status: creating src/pix/Makefile
config.status: creating bindings/Makefile
config.status: creating bindings/Perl/Makefile.PL
config.status: creating bindings/Python/setup.py
config.status: creating bindings/Python/setup-standalone.py
config.status: creating bindings/Java/Makefile
config.status: creating bindings/Tcl/Makefile
config.status: creating doc/Makefile
config.status: creating doc/doxygen.cfg
config.status: creating doc/xml/Makefile
config.status: creating doc/xml/catalog.xml
config.status: creating doc/xml/docbook.xsl
config.status: creating doc/man/Makefile
config.status: creating tests/Makefile
config.status: creating darwin/Makefile
config.status: creating config.h
config.status: creating include/pi-md5.h
config.status: include/pi-md5.h is unchanged
config.status: executing depfiles commands
config.status: executing libtool commands

  Options detected/selected
  -------------------------.
  pilot-link version...... : 0.12.5
  libpisock version....... : 9.0.2
  libpisync version....... : 1.0.3
  Build for host.......... : x86_64-unknown-linux-gnu
  Extra Warnings.......... : no
  Direct USB support...... : yes, Linux
  BlueZ support........... : yes
  Thread-safe libpisock... : no
  ElectricFence checks.... : no
  CPPFLAGS................ :
  CFLAGS.................. : -g2 -fpermissive

  Userland Tools
  -------------------------.
  Build userland tools.... : no
  Support for popt........ : none
  Readline support........ : none
  PNG support............. : no

  Internal Language Support
  -------------------------.
  Iconv support........... : yes

  External Language Support
  -------------------------.
  TCL support............. : false
  Java support............ : false
  Python support.......... : false
  Perl support............ : false

        real 7.61s
        user 2.91s
        sys 0
        swapped 0
        total space 0

Double check for compiler options.

klm@ryzen /tmp/pilot-link-0.12.5: rg -l Wall
bindings/Perl/h2xs-pilot-link
bindings/Perl/Pilot.c
src/pilot-install-expenses
configure
ChangeLog
configure.ac
klm@ryzen /tmp/pilot-link-0.12.5: rg -l fpermissive
bindings/Tcl/Makefile
bindings/Makefile
popt/Makefile
configure
libpisock/Makefile
config.status
bindings/Java/Makefile
Makefile
libtool
doc/Makefile
doc/man/Makefile
include/Makefile
doc/xml/Makefile
libpisync/Makefile
config.log
tests/Makefile
darwin/Makefile
src/prc/Makefile
src/pix/Makefile
src/Makefile

Finally, call make.

klm@ryzen /tmp/pilot-link-0.12.5: time make
make  all-recursive
make[1]: Entering directory '/tmp/pilot-link-0.12.5'
Making all in popt
make[2]: Entering directory '/tmp/pilot-link-0.12.5/popt'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/pilot-link-0.12.5/popt'
Making all in libpisock
make[2]: Entering directory '/tmp/pilot-link-0.12.5/libpisock'
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-bluetooth.lo -MD -MP -MF .deps/libpisock_la-bluetooth.Tpo -c -o libpisock_la-bluetooth.lo `test -f 'bluetooth.c' || echo './'`bluetooth.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-bluetooth.lo -MD -MP -MF .deps/libpisock_la-bluetooth.Tpo -c bluetooth.c  -fPIC -DPIC -o .libs/libpisock_la-bluetooth.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-bluetooth.lo -MD -MP -MF .deps/libpisock_la-bluetooth.Tpo -c bluetooth.c -o libpisock_la-bluetooth.o >/dev/null 2>&1
mv -f .deps/libpisock_la-bluetooth.Tpo .deps/libpisock_la-bluetooth.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-unixserial.lo -MD -MP -MF .deps/libpisock_la-unixserial.Tpo -c -o libpisock_la-unixserial.lo `test -f 'unixserial.c' || echo './'`unixserial.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-unixserial.lo -MD -MP -MF .deps/libpisock_la-unixserial.Tpo -c unixserial.c  -fPIC -DPIC -o .libs/libpisock_la-unixserial.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-unixserial.lo -MD -MP -MF .deps/libpisock_la-unixserial.Tpo -c unixserial.c -o libpisock_la-unixserial.o >/dev/null 2>&1
mv -f .deps/libpisock_la-unixserial.Tpo .deps/libpisock_la-unixserial.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-usb.lo -MD -MP -MF .deps/libpisock_la-usb.Tpo -c -o libpisock_la-usb.lo `test -f 'usb.c' || echo './'`usb.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-usb.lo -MD -MP -MF .deps/libpisock_la-usb.Tpo -c usb.c  -fPIC -DPIC -o .libs/libpisock_la-usb.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-usb.lo -MD -MP -MF .deps/libpisock_la-usb.Tpo -c usb.c -o libpisock_la-usb.o >/dev/null 2>&1
mv -f .deps/libpisock_la-usb.Tpo .deps/libpisock_la-usb.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-linuxusb.lo -MD -MP -MF .deps/libpisock_la-linuxusb.Tpo -c -o libpisock_la-linuxusb.lo `test -f 'linuxusb.c' || echo './'`linuxusb.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-linuxusb.lo -MD -MP -MF .deps/libpisock_la-linuxusb.Tpo -c linuxusb.c  -fPIC -DPIC -o .libs/libpisock_la-linuxusb.o
linuxusb.c: In function ‘pi_usb_impl_init’:
linuxusb.c:60:33: warning: assignment to ‘ssize_t (*)(pi_socket_t *, const unsigned char *, size_t,  int)’ {aka ‘long int (*)(struct pi_socket *, const unsigned char *, long unsigned int,  int)’} from incompatible pointer type ‘int (*)(pi_socket_t *, unsigned char *, size_t,  int)’ {aka ‘int (*)(struct pi_socket *, unsigned char *, long unsigned int,  int)’} [-Wincompatible-pointer-types]
   60 |         impl->write             = u_write;
      |                                 ^
linuxusb.c:61:33: warning: assignment to ‘ssize_t (*)(pi_socket_t *, pi_buffer_t *, size_t,  int)’ {aka ‘long int (*)(struct pi_socket *, pi_buffer_t *, long unsigned int,  int)’} from incompatible pointer type ‘int (*)(pi_socket_t *, pi_buffer_t *, size_t,  int)’ {aka ‘int (*)(struct pi_socket *, pi_buffer_t *, long unsigned int,  int)’} [-Wincompatible-pointer-types]
   61 |         impl->read              = u_read;
      |                                 ^
linuxusb.c: In function ‘u_flush’:
linuxusb.c:384:32: warning: implicit declaration of function ‘recv’ [-Wimplicit-function-declaration]
  384 |                         while (recv(ps->sd, buf, sizeof(buf), 0) > 0)
      |                                ^~~~
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-linuxusb.lo -MD -MP -MF .deps/libpisock_la-linuxusb.Tpo -c linuxusb.c -o libpisock_la-linuxusb.o >/dev/null 2>&1
mv -f .deps/libpisock_la-linuxusb.Tpo .deps/libpisock_la-linuxusb.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-address.lo -MD -MP -MF .deps/libpisock_la-address.Tpo -c -o libpisock_la-address.lo `test -f 'address.c' || echo './'`address.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-address.lo -MD -MP -MF .deps/libpisock_la-address.Tpo -c address.c  -fPIC -DPIC -o .libs/libpisock_la-address.o
address.c: In function ‘unpack_AddressAppInfo’:
address.c:212:32: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  212 |         unsigned char *start = record;
      |                                ^~~~~~
address.c: In function ‘pack_AddressAppInfo’:
address.c:280:39: warning: passing argument 1 of ‘strcpy’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  280 |                 strcpy(ai->phoneLabels[i - 3], ai->labels[i]);
      |                        ~~~~~~~~~~~~~~~^~~~~~~
In file included from address.c:26:
/usr/include/string.h:141:39: note: expected ‘char * restrict’ but argument is of type ‘const char *’
  141 | extern char *strcpy (char *__restrict __dest, const char *__restrict __src)
      |                      ~~~~~~~~~~~~~~~~~^~~~~~
address.c:282:39: warning: passing argument 1 of ‘strcpy’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  282 |                 strcpy(ai->phoneLabels[i - 19 + 5], ai->labels[i]);
      |                        ~~~~~~~~~~~~~~~^~~~~~~~~~~~
/usr/include/string.h:141:39: note: expected ‘char * restrict’ but argument is of type ‘const char *’
  141 | extern char *strcpy (char *__restrict __dest, const char *__restrict __src)
      |                      ~~~~~~~~~~~~~~~~~^~~~~~
address.c:301:39: warning: passing argument 1 of ‘strcpy’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  301 |                 strcpy(ai->phoneLabels[i - 3], ai->labels[i]);
      |                        ~~~~~~~~~~~~~~~^~~~~~~
/usr/include/string.h:141:39: note: expected ‘char * restrict’ but argument is of type ‘const char *’
  141 | extern char *strcpy (char *__restrict __dest, const char *__restrict __src)
      |                      ~~~~~~~~~~~~~~~~~^~~~~~
address.c:303:39: warning: passing argument 1 of ‘strcpy’ discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  303 |                 strcpy(ai->phoneLabels[i - 19 + 5], ai->labels[i]);
      |                        ~~~~~~~~~~~~~~~^~~~~~~~~~~~
/usr/include/string.h:141:39: note: expected ‘char * restrict’ but argument is of type ‘const char *’
  141 | extern char *strcpy (char *__restrict __dest, const char *__restrict __src)
      |                      ~~~~~~~~~~~~~~~~~^~~~~~
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-address.lo -MD -MP -MF .deps/libpisock_la-address.Tpo -c address.c -o libpisock_la-address.o >/dev/null 2>&1
mv -f .deps/libpisock_la-address.Tpo .deps/libpisock_la-address.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-appinfo.lo -MD -MP -MF .deps/libpisock_la-appinfo.Tpo -c -o libpisock_la-appinfo.lo `test -f 'appinfo.c' || echo './'`appinfo.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-appinfo.lo -MD -MP -MF .deps/libpisock_la-appinfo.Tpo -c appinfo.c  -fPIC -DPIC -o .libs/libpisock_la-appinfo.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-appinfo.lo -MD -MP -MF .deps/libpisock_la-appinfo.Tpo -c appinfo.c -o libpisock_la-appinfo.o >/dev/null 2>&1
mv -f .deps/libpisock_la-appinfo.Tpo .deps/libpisock_la-appinfo.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-connect.lo -MD -MP -MF .deps/libpisock_la-connect.Tpo -c -o libpisock_la-connect.lo `test -f 'connect.c' || echo './'`connect.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-connect.lo -MD -MP -MF .deps/libpisock_la-connect.Tpo -c connect.c  -fPIC -DPIC -o .libs/libpisock_la-connect.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-connect.lo -MD -MP -MF .deps/libpisock_la-connect.Tpo -c connect.c -o libpisock_la-connect.o >/dev/null 2>&1
mv -f .deps/libpisock_la-connect.Tpo .deps/libpisock_la-connect.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-contact.lo -MD -MP -MF .deps/libpisock_la-contact.Tpo -c -o libpisock_la-contact.lo `test -f 'contact.c' || echo './'`contact.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-contact.lo -MD -MP -MF .deps/libpisock_la-contact.Tpo -c contact.c  -fPIC -DPIC -o .libs/libpisock_la-contact.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-contact.lo -MD -MP -MF .deps/libpisock_la-contact.Tpo -c contact.c -o libpisock_la-contact.o >/dev/null 2>&1
mv -f .deps/libpisock_la-contact.Tpo .deps/libpisock_la-contact.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-cmp.lo -MD -MP -MF .deps/libpisock_la-cmp.Tpo -c -o libpisock_la-cmp.lo `test -f 'cmp.c' || echo './'`cmp.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-cmp.lo -MD -MP -MF .deps/libpisock_la-cmp.Tpo -c cmp.c  -fPIC -DPIC -o .libs/libpisock_la-cmp.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-cmp.lo -MD -MP -MF .deps/libpisock_la-cmp.Tpo -c cmp.c -o libpisock_la-cmp.o >/dev/null 2>&1
mv -f .deps/libpisock_la-cmp.Tpo .deps/libpisock_la-cmp.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-datebook.lo -MD -MP -MF .deps/libpisock_la-datebook.Tpo -c -o libpisock_la-datebook.lo `test -f 'datebook.c' || echo './'`datebook.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-datebook.lo -MD -MP -MF .deps/libpisock_la-datebook.Tpo -c datebook.c  -fPIC -DPIC -o .libs/libpisock_la-datebook.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-datebook.lo -MD -MP -MF .deps/libpisock_la-datebook.Tpo -c datebook.c -o libpisock_la-datebook.o >/dev/null 2>&1
mv -f .deps/libpisock_la-datebook.Tpo .deps/libpisock_la-datebook.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-debug.lo -MD -MP -MF .deps/libpisock_la-debug.Tpo -c -o libpisock_la-debug.lo `test -f 'debug.c' || echo './'`debug.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-debug.lo -MD -MP -MF .deps/libpisock_la-debug.Tpo -c debug.c  -fPIC -DPIC -o .libs/libpisock_la-debug.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-debug.lo -MD -MP -MF .deps/libpisock_la-debug.Tpo -c debug.c -o libpisock_la-debug.o >/dev/null 2>&1
mv -f .deps/libpisock_la-debug.Tpo .deps/libpisock_la-debug.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-dlp.lo -MD -MP -MF .deps/libpisock_la-dlp.Tpo -c -o libpisock_la-dlp.lo `test -f 'dlp.c' || echo './'`dlp.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-dlp.lo -MD -MP -MF .deps/libpisock_la-dlp.Tpo -c dlp.c  -fPIC -DPIC -o .libs/libpisock_la-dlp.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-dlp.lo -MD -MP -MF .deps/libpisock_la-dlp.Tpo -c dlp.c -o libpisock_la-dlp.o >/dev/null 2>&1
mv -f .deps/libpisock_la-dlp.Tpo .deps/libpisock_la-dlp.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-expense.lo -MD -MP -MF .deps/libpisock_la-expense.Tpo -c -o libpisock_la-expense.lo `test -f 'expense.c' || echo './'`expense.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-expense.lo -MD -MP -MF .deps/libpisock_la-expense.Tpo -c expense.c  -fPIC -DPIC -o .libs/libpisock_la-expense.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-expense.lo -MD -MP -MF .deps/libpisock_la-expense.Tpo -c expense.c -o libpisock_la-expense.o >/dev/null 2>&1
mv -f .deps/libpisock_la-expense.Tpo .deps/libpisock_la-expense.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-hinote.lo -MD -MP -MF .deps/libpisock_la-hinote.Tpo -c -o libpisock_la-hinote.lo `test -f 'hinote.c' || echo './'`hinote.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-hinote.lo -MD -MP -MF .deps/libpisock_la-hinote.Tpo -c hinote.c  -fPIC -DPIC -o .libs/libpisock_la-hinote.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-hinote.lo -MD -MP -MF .deps/libpisock_la-hinote.Tpo -c hinote.c -o libpisock_la-hinote.o >/dev/null 2>&1
mv -f .deps/libpisock_la-hinote.Tpo .deps/libpisock_la-hinote.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-inet.lo -MD -MP -MF .deps/libpisock_la-inet.Tpo -c -o libpisock_la-inet.lo `test -f 'inet.c' || echo './'`inet.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-inet.lo -MD -MP -MF .deps/libpisock_la-inet.Tpo -c inet.c  -fPIC -DPIC -o .libs/libpisock_la-inet.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-inet.lo -MD -MP -MF .deps/libpisock_la-inet.Tpo -c inet.c -o libpisock_la-inet.o >/dev/null 2>&1
mv -f .deps/libpisock_la-inet.Tpo .deps/libpisock_la-inet.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-location.lo -MD -MP -MF .deps/libpisock_la-location.Tpo -c -o libpisock_la-location.lo `test -f 'location.c' || echo './'`location.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-location.lo -MD -MP -MF .deps/libpisock_la-location.Tpo -c location.c  -fPIC -DPIC -o .libs/libpisock_la-location.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-location.lo -MD -MP -MF .deps/libpisock_la-location.Tpo -c location.c -o libpisock_la-location.o >/dev/null 2>&1
mv -f .deps/libpisock_la-location.Tpo .deps/libpisock_la-location.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-blob.lo -MD -MP -MF .deps/libpisock_la-blob.Tpo -c -o libpisock_la-blob.lo `test -f 'blob.c' || echo './'`blob.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-blob.lo -MD -MP -MF .deps/libpisock_la-blob.Tpo -c blob.c  -fPIC -DPIC -o .libs/libpisock_la-blob.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-blob.lo -MD -MP -MF .deps/libpisock_la-blob.Tpo -c blob.c -o libpisock_la-blob.o >/dev/null 2>&1
mv -f .deps/libpisock_la-blob.Tpo .deps/libpisock_la-blob.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-calendar.lo -MD -MP -MF .deps/libpisock_la-calendar.Tpo -c -o libpisock_la-calendar.lo `test -f 'calendar.c' || echo './'`calendar.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-calendar.lo -MD -MP -MF .deps/libpisock_la-calendar.Tpo -c calendar.c  -fPIC -DPIC -o .libs/libpisock_la-calendar.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-calendar.lo -MD -MP -MF .deps/libpisock_la-calendar.Tpo -c calendar.c -o libpisock_la-calendar.o >/dev/null 2>&1
mv -f .deps/libpisock_la-calendar.Tpo .deps/libpisock_la-calendar.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-mail.lo -MD -MP -MF .deps/libpisock_la-mail.Tpo -c -o libpisock_la-mail.lo `test -f 'mail.c' || echo './'`mail.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-mail.lo -MD -MP -MF .deps/libpisock_la-mail.Tpo -c mail.c  -fPIC -DPIC -o .libs/libpisock_la-mail.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-mail.lo -MD -MP -MF .deps/libpisock_la-mail.Tpo -c mail.c -o libpisock_la-mail.o >/dev/null 2>&1
mv -f .deps/libpisock_la-mail.Tpo .deps/libpisock_la-mail.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-md5.lo -MD -MP -MF .deps/libpisock_la-md5.Tpo -c -o libpisock_la-md5.lo `test -f 'md5.c' || echo './'`md5.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-md5.lo -MD -MP -MF .deps/libpisock_la-md5.Tpo -c md5.c  -fPIC -DPIC -o .libs/libpisock_la-md5.o
In file included from md5.c:27:
../include/pi-md5.h:26:24: warning: extra tokens at end of #ifdef directive
   26 | #ifdef HAVE_INTTYPES_H || HAVE_STDINT_H
      |                        ^~
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-md5.lo -MD -MP -MF .deps/libpisock_la-md5.Tpo -c md5.c -o libpisock_la-md5.o >/dev/null 2>&1
mv -f .deps/libpisock_la-md5.Tpo .deps/libpisock_la-md5.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-memo.lo -MD -MP -MF .deps/libpisock_la-memo.Tpo -c -o libpisock_la-memo.lo `test -f 'memo.c' || echo './'`memo.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-memo.lo -MD -MP -MF .deps/libpisock_la-memo.Tpo -c memo.c  -fPIC -DPIC -o .libs/libpisock_la-memo.o
memo.c: In function ‘unpack_MemoAppInfo’:
memo.c:125:32: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  125 |         unsigned char *start = record;
      |                                ^~~~~~
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-memo.lo -MD -MP -MF .deps/libpisock_la-memo.Tpo -c memo.c -o libpisock_la-memo.o >/dev/null 2>&1
mv -f .deps/libpisock_la-memo.Tpo .deps/libpisock_la-memo.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-money.lo -MD -MP -MF .deps/libpisock_la-money.Tpo -c -o libpisock_la-money.lo `test -f 'money.c' || echo './'`money.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-money.lo -MD -MP -MF .deps/libpisock_la-money.Tpo -c money.c  -fPIC -DPIC -o .libs/libpisock_la-money.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-money.lo -MD -MP -MF .deps/libpisock_la-money.Tpo -c money.c -o libpisock_la-money.o >/dev/null 2>&1
mv -f .deps/libpisock_la-money.Tpo .deps/libpisock_la-money.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-net.lo -MD -MP -MF .deps/libpisock_la-net.Tpo -c -o libpisock_la-net.lo `test -f 'net.c' || echo './'`net.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-net.lo -MD -MP -MF .deps/libpisock_la-net.Tpo -c net.c  -fPIC -DPIC -o .libs/libpisock_la-net.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-net.lo -MD -MP -MF .deps/libpisock_la-net.Tpo -c net.c -o libpisock_la-net.o >/dev/null 2>&1
mv -f .deps/libpisock_la-net.Tpo .deps/libpisock_la-net.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-notepad.lo -MD -MP -MF .deps/libpisock_la-notepad.Tpo -c -o libpisock_la-notepad.lo `test -f 'notepad.c' || echo './'`notepad.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-notepad.lo -MD -MP -MF .deps/libpisock_la-notepad.Tpo -c notepad.c  -fPIC -DPIC -o .libs/libpisock_la-notepad.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-notepad.lo -MD -MP -MF .deps/libpisock_la-notepad.Tpo -c notepad.c -o libpisock_la-notepad.o >/dev/null 2>&1
mv -f .deps/libpisock_la-notepad.Tpo .deps/libpisock_la-notepad.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-padp.lo -MD -MP -MF .deps/libpisock_la-padp.Tpo -c -o libpisock_la-padp.lo `test -f 'padp.c' || echo './'`padp.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-padp.lo -MD -MP -MF .deps/libpisock_la-padp.Tpo -c padp.c  -fPIC -DPIC -o .libs/libpisock_la-padp.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-padp.lo -MD -MP -MF .deps/libpisock_la-padp.Tpo -c padp.c -o libpisock_la-padp.o >/dev/null 2>&1
mv -f .deps/libpisock_la-padp.Tpo .deps/libpisock_la-padp.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-palmpix.lo -MD -MP -MF .deps/libpisock_la-palmpix.Tpo -c -o libpisock_la-palmpix.lo `test -f 'palmpix.c' || echo './'`palmpix.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-palmpix.lo -MD -MP -MF .deps/libpisock_la-palmpix.Tpo -c palmpix.c  -fPIC -DPIC -o .libs/libpisock_la-palmpix.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-palmpix.lo -MD -MP -MF .deps/libpisock_la-palmpix.Tpo -c palmpix.c -o libpisock_la-palmpix.o >/dev/null 2>&1
mv -f .deps/libpisock_la-palmpix.Tpo .deps/libpisock_la-palmpix.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-pi-buffer.lo -MD -MP -MF .deps/libpisock_la-pi-buffer.Tpo -c -o libpisock_la-pi-buffer.lo `test -f 'pi-buffer.c' || echo './'`pi-buffer.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-pi-buffer.lo -MD -MP -MF .deps/libpisock_la-pi-buffer.Tpo -c pi-buffer.c  -fPIC -DPIC -o .libs/libpisock_la-pi-buffer.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-pi-buffer.lo -MD -MP -MF .deps/libpisock_la-pi-buffer.Tpo -c pi-buffer.c -o libpisock_la-pi-buffer.o >/dev/null 2>&1
mv -f .deps/libpisock_la-pi-buffer.Tpo .deps/libpisock_la-pi-buffer.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-pi-file.lo -MD -MP -MF .deps/libpisock_la-pi-file.Tpo -c -o libpisock_la-pi-file.lo `test -f 'pi-file.c' || echo './'`pi-file.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-pi-file.lo -MD -MP -MF .deps/libpisock_la-pi-file.Tpo -c pi-file.c  -fPIC -DPIC -o .libs/libpisock_la-pi-file.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-pi-file.lo -MD -MP -MF .deps/libpisock_la-pi-file.Tpo -c pi-file.c -o libpisock_la-pi-file.o >/dev/null 2>&1
mv -f .deps/libpisock_la-pi-file.Tpo .deps/libpisock_la-pi-file.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-pi-header.lo -MD -MP -MF .deps/libpisock_la-pi-header.Tpo -c -o libpisock_la-pi-header.lo `test -f 'pi-header.c' || echo './'`pi-header.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-pi-header.lo -MD -MP -MF .deps/libpisock_la-pi-header.Tpo -c pi-header.c  -fPIC -DPIC -o .libs/libpisock_la-pi-header.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-pi-header.lo -MD -MP -MF .deps/libpisock_la-pi-header.Tpo -c pi-header.c -o libpisock_la-pi-header.o >/dev/null 2>&1
mv -f .deps/libpisock_la-pi-header.Tpo .deps/libpisock_la-pi-header.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-serial.lo -MD -MP -MF .deps/libpisock_la-serial.Tpo -c -o libpisock_la-serial.lo `test -f 'serial.c' || echo './'`serial.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-serial.lo -MD -MP -MF .deps/libpisock_la-serial.Tpo -c serial.c  -fPIC -DPIC -o .libs/libpisock_la-serial.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-serial.lo -MD -MP -MF .deps/libpisock_la-serial.Tpo -c serial.c -o libpisock_la-serial.o >/dev/null 2>&1
mv -f .deps/libpisock_la-serial.Tpo .deps/libpisock_la-serial.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-slp.lo -MD -MP -MF .deps/libpisock_la-slp.Tpo -c -o libpisock_la-slp.lo `test -f 'slp.c' || echo './'`slp.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-slp.lo -MD -MP -MF .deps/libpisock_la-slp.Tpo -c slp.c  -fPIC -DPIC -o .libs/libpisock_la-slp.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-slp.lo -MD -MP -MF .deps/libpisock_la-slp.Tpo -c slp.c -o libpisock_la-slp.o >/dev/null 2>&1
mv -f .deps/libpisock_la-slp.Tpo .deps/libpisock_la-slp.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-sys.lo -MD -MP -MF .deps/libpisock_la-sys.Tpo -c -o libpisock_la-sys.lo `test -f 'sys.c' || echo './'`sys.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-sys.lo -MD -MP -MF .deps/libpisock_la-sys.Tpo -c sys.c  -fPIC -DPIC -o .libs/libpisock_la-sys.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-sys.lo -MD -MP -MF .deps/libpisock_la-sys.Tpo -c sys.c -o libpisock_la-sys.o >/dev/null 2>&1
mv -f .deps/libpisock_la-sys.Tpo .deps/libpisock_la-sys.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-socket.lo -MD -MP -MF .deps/libpisock_la-socket.Tpo -c -o libpisock_la-socket.lo `test -f 'socket.c' || echo './'`socket.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-socket.lo -MD -MP -MF .deps/libpisock_la-socket.Tpo -c socket.c  -fPIC -DPIC -o .libs/libpisock_la-socket.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-socket.lo -MD -MP -MF .deps/libpisock_la-socket.Tpo -c socket.c -o libpisock_la-socket.o >/dev/null 2>&1
mv -f .deps/libpisock_la-socket.Tpo .deps/libpisock_la-socket.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-syspkt.lo -MD -MP -MF .deps/libpisock_la-syspkt.Tpo -c -o libpisock_la-syspkt.lo `test -f 'syspkt.c' || echo './'`syspkt.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-syspkt.lo -MD -MP -MF .deps/libpisock_la-syspkt.Tpo -c syspkt.c  -fPIC -DPIC -o .libs/libpisock_la-syspkt.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-syspkt.lo -MD -MP -MF .deps/libpisock_la-syspkt.Tpo -c syspkt.c -o libpisock_la-syspkt.o >/dev/null 2>&1
mv -f .deps/libpisock_la-syspkt.Tpo .deps/libpisock_la-syspkt.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-threadsafe.lo -MD -MP -MF .deps/libpisock_la-threadsafe.Tpo -c -o libpisock_la-threadsafe.lo `test -f 'threadsafe.c' || echo './'`threadsafe.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-threadsafe.lo -MD -MP -MF .deps/libpisock_la-threadsafe.Tpo -c threadsafe.c  -fPIC -DPIC -o .libs/libpisock_la-threadsafe.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-threadsafe.lo -MD -MP -MF .deps/libpisock_la-threadsafe.Tpo -c threadsafe.c -o libpisock_la-threadsafe.o >/dev/null 2>&1
mv -f .deps/libpisock_la-threadsafe.Tpo .deps/libpisock_la-threadsafe.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-todo.lo -MD -MP -MF .deps/libpisock_la-todo.Tpo -c -o libpisock_la-todo.lo `test -f 'todo.c' || echo './'`todo.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-todo.lo -MD -MP -MF .deps/libpisock_la-todo.Tpo -c todo.c  -fPIC -DPIC -o .libs/libpisock_la-todo.o
todo.c: In function ‘unpack_ToDoAppInfo’:
todo.c:235:32: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
  235 |         unsigned char *start = record;
      |                                ^~~~~~
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-todo.lo -MD -MP -MF .deps/libpisock_la-todo.Tpo -c todo.c -o libpisock_la-todo.o >/dev/null 2>&1
mv -f .deps/libpisock_la-todo.Tpo .deps/libpisock_la-todo.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-utils.lo -MD -MP -MF .deps/libpisock_la-utils.Tpo -c -o libpisock_la-utils.lo `test -f 'utils.c' || echo './'`utils.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-utils.lo -MD -MP -MF .deps/libpisock_la-utils.Tpo -c utils.c  -fPIC -DPIC -o .libs/libpisock_la-utils.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-utils.lo -MD -MP -MF .deps/libpisock_la-utils.Tpo -c utils.c -o libpisock_la-utils.o >/dev/null 2>&1
mv -f .deps/libpisock_la-utils.Tpo .deps/libpisock_la-utils.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-veo.lo -MD -MP -MF .deps/libpisock_la-veo.Tpo -c -o libpisock_la-veo.lo `test -f 'veo.c' || echo './'`veo.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-veo.lo -MD -MP -MF .deps/libpisock_la-veo.Tpo -c veo.c  -fPIC -DPIC -o .libs/libpisock_la-veo.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-veo.lo -MD -MP -MF .deps/libpisock_la-veo.Tpo -c veo.c -o libpisock_la-veo.o >/dev/null 2>&1
mv -f .deps/libpisock_la-veo.Tpo .deps/libpisock_la-veo.Plo
/bin/sh ../libtool  --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include      -g2 -fpermissive -MT libpisock_la-versamail.lo -MD -MP -MF .deps/libpisock_la-versamail.Tpo -c -o libpisock_la-versamail.lo `test -f 'versamail.c' || echo './'`versamail.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-versamail.lo -MD -MP -MF .deps/libpisock_la-versamail.Tpo -c versamail.c  -fPIC -DPIC -o .libs/libpisock_la-versamail.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT libpisock_la-versamail.lo -MD -MP -MF .deps/libpisock_la-versamail.Tpo -c versamail.c -o libpisock_la-versamail.o >/dev/null 2>&1
mv -f .deps/libpisock_la-versamail.Tpo .deps/libpisock_la-versamail.Plo
/bin/sh ../libtool --tag=CC   --mode=link gcc    -g2 -fpermissive -export-dynamic -version-info 9:2:0  -o libpisock.la -rpath /usr/local/lib libpisock_la-bluetooth.lo libpisock_la-unixserial.lo libpisock_la-usb.lo libpisock_la-linuxusb.lo libpisock_la-address.lo libpisock_la-appinfo.lo libpisock_la-connect.lo libpisock_la-contact.lo libpisock_la-cmp.lo libpisock_la-datebook.lo libpisock_la-debug.lo libpisock_la-dlp.lo libpisock_la-expense.lo libpisock_la-hinote.lo libpisock_la-inet.lo libpisock_la-location.lo libpisock_la-blob.lo libpisock_la-calendar.lo libpisock_la-mail.lo libpisock_la-md5.lo libpisock_la-memo.lo libpisock_la-money.lo libpisock_la-net.lo libpisock_la-notepad.lo libpisock_la-padp.lo libpisock_la-palmpix.lo libpisock_la-pi-buffer.lo libpisock_la-pi-file.lo libpisock_la-pi-header.lo libpisock_la-serial.lo libpisock_la-slp.lo libpisock_la-sys.lo libpisock_la-socket.lo libpisock_la-syspkt.lo libpisock_la-threadsafe.lo libpisock_la-todo.lo libpisock_la-utils.lo libpisock_la-veo.lo libpisock_la-versamail.lo -lbluetooth
libtool: link: gcc -shared  .libs/libpisock_la-bluetooth.o .libs/libpisock_la-unixserial.o .libs/libpisock_la-usb.o .libs/libpisock_la-linuxusb.o .libs/libpisock_la-address.o .libs/libpisock_la-appinfo.o .libs/libpisock_la-connect.o .libs/libpisock_la-contact.o .libs/libpisock_la-cmp.o .libs/libpisock_la-datebook.o .libs/libpisock_la-debug.o .libs/libpisock_la-dlp.o .libs/libpisock_la-expense.o .libs/libpisock_la-hinote.o .libs/libpisock_la-inet.o .libs/libpisock_la-location.o .libs/libpisock_la-blob.o .libs/libpisock_la-calendar.o .libs/libpisock_la-mail.o .libs/libpisock_la-md5.o .libs/libpisock_la-memo.o .libs/libpisock_la-money.o .libs/libpisock_la-net.o .libs/libpisock_la-notepad.o .libs/libpisock_la-padp.o .libs/libpisock_la-palmpix.o .libs/libpisock_la-pi-buffer.o .libs/libpisock_la-pi-file.o .libs/libpisock_la-pi-header.o .libs/libpisock_la-serial.o .libs/libpisock_la-slp.o .libs/libpisock_la-sys.o .libs/libpisock_la-socket.o .libs/libpisock_la-syspkt.o .libs/libpisock_la-threadsafe.o .libs/libpisock_la-todo.o .libs/libpisock_la-utils.o .libs/libpisock_la-veo.o .libs/libpisock_la-versamail.o   -lbluetooth    -Wl,-soname -Wl,libpisock.so.9 -o .libs/libpisock.so.9.0.2
libtool: link: (cd ".libs" && rm -f "libpisock.so.9" && ln -s "libpisock.so.9.0.2" "libpisock.so.9")
libtool: link: (cd ".libs" && rm -f "libpisock.so" && ln -s "libpisock.so.9.0.2" "libpisock.so")
libtool: link: ar cru .libs/libpisock.a  libpisock_la-bluetooth.o libpisock_la-unixserial.o libpisock_la-usb.o libpisock_la-linuxusb.o libpisock_la-address.o libpisock_la-appinfo.o libpisock_la-connect.o libpisock_la-contact.o libpisock_la-cmp.o libpisock_la-datebook.o libpisock_la-debug.o libpisock_la-dlp.o libpisock_la-expense.o libpisock_la-hinote.o libpisock_la-inet.o libpisock_la-location.o libpisock_la-blob.o libpisock_la-calendar.o libpisock_la-mail.o libpisock_la-md5.o libpisock_la-memo.o libpisock_la-money.o libpisock_la-net.o libpisock_la-notepad.o libpisock_la-padp.o libpisock_la-palmpix.o libpisock_la-pi-buffer.o libpisock_la-pi-file.o libpisock_la-pi-header.o libpisock_la-serial.o libpisock_la-slp.o libpisock_la-sys.o libpisock_la-socket.o libpisock_la-syspkt.o libpisock_la-threadsafe.o libpisock_la-todo.o libpisock_la-utils.o libpisock_la-veo.o libpisock_la-versamail.o
ar: `u' modifier ignored since `D' is the default (see `U')
libtool: link: ranlib .libs/libpisock.a
libtool: link: ( cd ".libs" && rm -f "libpisock.la" && ln -s "../libpisock.la" "libpisock.la" )
make[2]: Leaving directory '/tmp/pilot-link-0.12.5/libpisock'
Making all in libpisync
make[2]: Entering directory '/tmp/pilot-link-0.12.5/libpisync'
/bin/sh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include     -g2 -fpermissive -MT sync.lo -MD -MP -MF .deps/sync.Tpo -c -o sync.lo sync.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT sync.lo -MD -MP -MF .deps/sync.Tpo -c sync.c  -fPIC -DPIC -o .libs/sync.o
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT sync.lo -MD -MP -MF .deps/sync.Tpo -c sync.c -o sync.o >/dev/null 2>&1
mv -f .deps/sync.Tpo .deps/sync.Plo
/bin/sh ../libtool --tag=CC   --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include     -g2 -fpermissive -MT util.lo -MD -MP -MF .deps/util.Tpo -c -o util.lo util.c
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT util.lo -MD -MP -MF .deps/util.Tpo -c util.c  -fPIC -DPIC -o .libs/util.o
util.c: In function ‘convert_ToPilotChar_WithCharset’:
util.c:123:23: warning: passing argument 2 of ‘iconv’ from incompatible pointer type [-Wincompatible-pointer-types]
  123 |         if (iconv(cd, &text, &ibl, &ob, &obl) == (size_t)-1)
      |                       ^~~~~
      |                       |
      |                       const char **
In file included from util.c:32:
/usr/include/iconv.h:49:54: note: expected ‘char ** restrict’ but argument is of type ‘const char **’
   49 | extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
      |                                    ~~~~~~~~~~~~~~~~~~^~~~~~~
util.c: In function ‘convert_FromPilotChar_WithCharset’:
util.c:214:23: warning: passing argument 2 of ‘iconv’ from incompatible pointer type [-Wincompatible-pointer-types]
  214 |         if (iconv(cd, &ptext, &ibl, &ob, &obl) == (size_t)-1)
      |                       ^~~~~~
      |                       |
      |                       const char **
/usr/include/iconv.h:49:54: note: expected ‘char ** restrict’ but argument is of type ‘const char **’
   49 | extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
      |                                    ~~~~~~~~~~~~~~~~~~^~~~~~~
libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include -g2 -fpermissive -MT util.lo -MD -MP -MF .deps/util.Tpo -c util.c -o util.o >/dev/null 2>&1
mv -f .deps/util.Tpo .deps/util.Plo
/bin/sh ../libtool --tag=CC   --mode=link gcc  -g2 -fpermissive -export-dynamic -version-info 1:3:0  -o libpisync.la -rpath /usr/local/lib sync.lo util.lo ../libpisock/libpisock.la 
libtool: link: gcc -shared  .libs/sync.o .libs/util.o   -Wl,-rpath -Wl,/tmp/pilot-link-0.12.5/libpisock/.libs -Wl,-rpath -Wl,/usr/local/lib ../libpisock/.libs/libpisock.so    -Wl,-soname -Wl,libpisync.so.1 -o .libs/libpisync.so.1.0.3
libtool: link: (cd ".libs" && rm -f "libpisync.so.1" && ln -s "libpisync.so.1.0.3" "libpisync.so.1")
libtool: link: (cd ".libs" && rm -f "libpisync.so" && ln -s "libpisync.so.1.0.3" "libpisync.so")
libtool: link: ar cru .libs/libpisync.a  sync.o util.o
ar: `u' modifier ignored since `D' is the default (see `U')
libtool: link: ranlib .libs/libpisync.a
libtool: link: ( cd ".libs" && rm -f "libpisync.la" && ln -s "../libpisync.la" "libpisync.la" )
make[2]: Leaving directory '/tmp/pilot-link-0.12.5/libpisync'
Making all in include
make[2]: Entering directory '/tmp/pilot-link-0.12.5/include'
make  all-am
make[3]: Entering directory '/tmp/pilot-link-0.12.5/include'
make[3]: Leaving directory '/tmp/pilot-link-0.12.5/include'
make[2]: Leaving directory '/tmp/pilot-link-0.12.5/include'
Making all in src
make[2]: Entering directory '/tmp/pilot-link-0.12.5/src'
Making all in prc
make[3]: Entering directory '/tmp/pilot-link-0.12.5/src/prc'
make[3]: Nothing to be done for 'all'.
make[3]: Leaving directory '/tmp/pilot-link-0.12.5/src/prc'
Making all in pix
make[3]: Entering directory '/tmp/pilot-link-0.12.5/src/pix'
make[3]: Nothing to be done for 'all'.
make[3]: Leaving directory '/tmp/pilot-link-0.12.5/src/pix'
make[3]: Entering directory '/tmp/pilot-link-0.12.5/src'
make[3]: Nothing to be done for 'all-am'.
make[3]: Leaving directory '/tmp/pilot-link-0.12.5/src'
make[2]: Leaving directory '/tmp/pilot-link-0.12.5/src'
Making all in bindings
make[2]: Entering directory '/tmp/pilot-link-0.12.5/bindings'
make[3]: Entering directory '/tmp/pilot-link-0.12.5/bindings'
make[3]: Nothing to be done for 'all-am'.
make[3]: Leaving directory '/tmp/pilot-link-0.12.5/bindings'
make[2]: Leaving directory '/tmp/pilot-link-0.12.5/bindings'
Making all in doc
make[2]: Entering directory '/tmp/pilot-link-0.12.5/doc'
make[3]: Entering directory '/tmp/pilot-link-0.12.5/doc'
make[3]: Nothing to be done for 'all-am'.
make[3]: Leaving directory '/tmp/pilot-link-0.12.5/doc'
make[2]: Leaving directory '/tmp/pilot-link-0.12.5/doc'
Making all in tests
make[2]: Entering directory '/tmp/pilot-link-0.12.5/tests'
gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include     -g2 -fpermissive -MT calendardb-test.o -MD -MP -MF .deps/calendardb-test.Tpo -c -o calendardb-test.o calendardb-test.c
mv -f .deps/calendardb-test.Tpo .deps/calendardb-test.Po
/bin/sh ../libtool --tag=CC   --mode=link gcc  -g2 -fpermissive   -o calendardb-test calendardb-test.o ../libpisock/libpisock.la
libtool: link: gcc -g2 -fpermissive -o .libs/calendardb-test calendardb-test.o  ../libpisock/.libs/libpisock.so -Wl,-rpath -Wl,/usr/local/lib
gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include     -g2 -fpermissive -MT locationdb-test.o -MD -MP -MF .deps/locationdb-test.Tpo -c -o locationdb-test.o locationdb-test.c
mv -f .deps/locationdb-test.Tpo .deps/locationdb-test.Po
/bin/sh ../libtool --tag=CC   --mode=link gcc  -g2 -fpermissive   -o locationdb-test locationdb-test.o ../libpisock/libpisock.la
libtool: link: gcc -g2 -fpermissive -o .libs/locationdb-test locationdb-test.o  ../libpisock/.libs/libpisock.so -Wl,-rpath -Wl,/usr/local/lib
gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include     -g2 -fpermissive -MT contactsdb-test.o -MD -MP -MF .deps/contactsdb-test.Tpo -c -o contactsdb-test.o contactsdb-test.c
contactsdb-test.c: In function ‘main’:
contactsdb-test.c:348:9: warning: ‘pilot_connect’ is deprecated [-Wdeprecated-declarations]
  348 |         sd = pilot_connect (argv[1]);
      |         ^~
In file included from contactsdb-test.c:31:
../include/pi-header.h:31:5: note: declared here
   31 | int pilot_connect(const char *port) PI_DEPRECATED;
      |     ^~~~~~~~~~~~~
mv -f .deps/contactsdb-test.Tpo .deps/contactsdb-test.Po
/bin/sh ../libtool --tag=CC   --mode=link gcc  -g2 -fpermissive   -o contactsdb-test contactsdb-test.o ../libpisock/libpisock.la
libtool: link: gcc -g2 -fpermissive -o .libs/contactsdb-test contactsdb-test.o  ../libpisock/.libs/libpisock.so -Wl,-rpath -Wl,/usr/local/lib
gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include     -g2 -fpermissive -MT dlp-test.o -MD -MP -MF .deps/dlp-test.Tpo -c -o dlp-test.o dlp-test.c
mv -f .deps/dlp-test.Tpo .deps/dlp-test.Po
/bin/sh ../libtool --tag=CC   --mode=link gcc  -g2 -fpermissive   -o dlp-test dlp-test.o ../libpisock/libpisock.la
libtool: link: gcc -g2 -fpermissive -o .libs/dlp-test dlp-test.o  ../libpisock/.libs/libpisock.so -Wl,-rpath -Wl,/usr/local/lib
gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include     -g2 -fpermissive -MT versamail-test.o -MD -MP -MF .deps/versamail-test.Tpo -c -o versamail-test.o versamail-test.c
mv -f .deps/versamail-test.Tpo .deps/versamail-test.Po
/bin/sh ../libtool --tag=CC   --mode=link gcc  -g2 -fpermissive   -o versamail-test versamail-test.o ../libpisock/libpisock.la
libtool: link: gcc -g2 -fpermissive -o .libs/versamail-test versamail-test.o  ../libpisock/.libs/libpisock.so -Wl,-rpath -Wl,/usr/local/lib
gcc -DHAVE_CONFIG_H -I. -I.. -I../include -I../include -I../include     -g2 -fpermissive -MT vfs-test.o -MD -MP -MF .deps/vfs-test.Tpo -c -o vfs-test.o vfs-test.c
vfs-test.c: In function ‘main’:
vfs-test.c:80:9: warning: ‘pilot_connect’ is deprecated [-Wdeprecated-declarations]
   80 |         sd = pilot_connect (argv[1]);
      |         ^~
In file included from vfs-test.c:37:
../include/pi-header.h:31:5: note: declared here
   31 | int pilot_connect(const char *port) PI_DEPRECATED;
      |     ^~~~~~~~~~~~~
mv -f .deps/vfs-test.Tpo .deps/vfs-test.Po
/bin/sh ../libtool --tag=CC   --mode=link gcc  -g2 -fpermissive   -o vfs-test vfs-test.o ../libpisock/libpisock.la
libtool: link: gcc -g2 -fpermissive -o .libs/vfs-test vfs-test.o  ../libpisock/.libs/libpisock.so -Wl,-rpath -Wl,/usr/local/lib
make[2]: Leaving directory '/tmp/pilot-link-0.12.5/tests'
Making all in darwin
make[2]: Entering directory '/tmp/pilot-link-0.12.5/darwin'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/tmp/pilot-link-0.12.5/darwin'
make[2]: Entering directory '/tmp/pilot-link-0.12.5'
make[2]: Leaving directory '/tmp/pilot-link-0.12.5'
make[1]: Leaving directory '/tmp/pilot-link-0.12.5'
        real 8.12s
        user 5.56s
        sys 0
        swapped 0
        total space 0
klm@ryzen /tmp/pilot-link-0.12.5: echo $?
0
klm@ryzen /tmp/pilot-link-0.12.5:

This post is referenced here: MAKE von älteren Projekt geht nicht mehr.

In diesem Text werden die theoretischen Grundlagen, die u.a. zu den zyklischen Verfahren von Tendler (1973) führten, angeschnitten. Es werden die Begriffe $A[\alpha]$- und $S[\delta]$-Stabilität eingeführt. Die naheliegenden weiteren Definitionen von $A_\infty^r[\alpha]$- und $S_\infty^r[\delta]$-Stabilität werden ebenso diskutiert. Diese Definitionen weichen gelegentlich von den Definitionen ab, wie sie in der Literatur zu finden sind. Die Begriffe $A_\infty^r[\alpha]$- und $S_\infty^0[\delta]$-Stabilität werden hier nur so benutzt, wie sie an dieser Stelle erklärt werden. Diese Stabilitätsmerkmale ermöglichen einen Vergleich verschiedener Verfahren gleicher Ordnung und damit eine Abschätzung über ihre Brauchbarkeit bei einem Einsatz in einem Programmpaket. Dennoch setzen diese Stabilitätsdefinitionen gewisse idealisierte Bedingungen voraus. Aus diesem Grunde ist es ratsam, ihnen nicht unangemessen großes Gewicht beizumessen. Erfüllt also ein Verfahren diese Eigenschaft besonders “gut”, so heißt dies nicht automatisch, daß es sich in einem Rechenprogramm auch immer “gut” verhalten würde.

Schließlich wird dargelegt, wie die neuen zyklischen Formeln generiert wurden. Das letzte ist von Interesse, wenn versucht werden sollte, die von J.M. Tendler gefundenen Formeln weiter zu verbessern. Von seinen prinzipiellen Grundbestandteilen her sind die Tendlerschen Zyklen vergleichsweise einfach aufgebaut, nämlich als lineares Komposituum linear unabhängiger Mehrschrittformeln. Dennoch ist die tatsächliche Erzeugung, insbesondere die systematische Generierung nicht ganz einfach. Es handelt sich hier nicht um einen einfach erlernbaren Kalkül, sondern um einen iterativen Suchvorgang.

Bibliographisch: Tendler, Joel Marvin: "A Stiffly Stable Integration Process Using Cyclic Composite Methods", Ph.D. Diss., Syracuse University, Syracuse, New York, 26.Feb.1973, viii+iv+172 S.

1. Definition von Stabilitätseigenschaften

$\ldots$ wird sich diese Störung allerdings erst später einstellen, aber auf alle Fälle wird die Integration nach ausreichend vielen Schritten gründlich verpfuscht. Man nennt diese Erscheinung numerische Instabilität. Sie ist nicht etwa eine Folge der Akkumulation von Rundungsfehlern, denn die Formel beschreibt den Integrationsprozeß unter der Annahme, daß vollständig exakt gerechnet wird.

Eduard Stiefel (1968)

Ausschließlich Differentialgleichungen vom Typ

werden hier betrachtet. Es sei für diesen und alle weiteren Abschnitte angenommen, daß $f$ und damit $y$ so oft differenzierbar sind, wie es für die jeweilige Betrachtung nötig ist. Es wird nun $t_n=t_0+nh$ gesetzt, und $y_n$ bezeichnet die berechneten Näherung für $y(t_n)$, für $n=m\ell+j$ und $j=1,\ldots,\ell$, die durch die folgenden $\ell$ Mehrschrittformeln bestimmt wurden

wobei $\dot y_i = f(t_i,y_i)$ ist.

Ausführlich aufgeschrieben lautet der obige Ausdruck z.B. für ein dreistufiges Verfahren mit drei Startwerten, also $\ell=3$, und $k=3$, wie untenstehend. Hier und im weiteren wird häufig die Abkürzung $z_i=hf_i=h\dot y_i$ benutzt.

Der obige Ausdruck wird zyklisch, falls gilt

Gälte $\alpha_{ij}\ne0$ oder $\beta_{ij}\ne0$ für ein $i<j$, so wäre das zusammengesetzte Verfahren blockimplizit. Der Aufwand zur “Beseitigung” der Implizitheit der Formeln wäre dann größer als bei (einstufigen) linearen Mehrschrittformeln.

Bei zyklischen Verfahren ist der Aufwand zur Berechnung der Näherungen nicht größer als wie bei Mehrschrittverfahren. Andererseits hat man jedoch nun die Möglichkeit, da nicht alle Stufen gleich gewählt werden müssen, Stabilitätseigenschaften zu erreichen die u.U. den Stufen überlegen sind. Die Stufen müssen untereinander nicht verschieden sein. Einige oder auch alle dürfen übereinstimmen. Praktische Ergebnisse deuten auf den merkwürdigen Umstand hin, daß die dreifache Wiederholung der BDF2 als zyklisches Verfahren entsprechend programmiert, gegenüber der dreifachen Anwendung von 3 Schritten mit der BDF2 mit einem Programm konzipiert für einstufige Verfahren, Vorteile bieten kann.

Während bis jetzt noch jede Stufe des Zykluses $2(k+i)$ Parameter, d.h. noch nicht bestimmte Koeffizienten, enthält, sei noch zusätzlich angenommen, um die die Anzahl der der Bedingungen zu reduzieren, daß gelte

D.h., daß jede Stufe ein lineares $k$-Schrittverfahren ist. Es verbleiben jetzt noch $2(k+1)$ Parameter. Aus Vereinfachungsgründen wird nun verlangt, daß jede Stufe die gleiche Konsistenzordnung $p=k$ hat. Berücksichtigt man die Konsistenzbedingungen, so verbleiben noch $k+1$ Parameter. Diese werden dazu benutzt die gewünschten Stabilitätseigenschaften des Verfahrens zu erreichen.

Zur Untersuchung des Lösungsverhaltens der Differenzengleichung, welche man zur numerischen Lösung von Differentialgleichungen einsetzt, betrachtet man die sehr spezielle Testgleichung

Da man durch Linearisierung viele Differentialgleichung zumindestens in einer kleinen Umgebung auf diese obige Form zurückführen kann, liefert die Untersuchung dieser speziellen Gleichung einen ersten Eindruck was man wohl im allgemeineren Falle zu erwarten hat. Desweiteren kann man damit gewisse Ineffizienzen von Programmen verstehen und erklären. Zur Wiederholung seien in sehr salopper Form die beiden bekanntesten Stabilitätsdefinitionen angegeben:

Eine Formel heißt stabil, wenn die sämtlichen berechneten Lösungen für $H=0$ nicht unbeschränkt wachsen können; $H=h\lambda$.

Die Formel heißt $A$-stabil, wenn sämtliche berechneten Lösungen eine Nullfolge bilden, für alle $H\in\mathbb{C}^-$. Ausführlicher

1. Definition: nach Germund Dahlquist, Dahlquist (1963). Ein lineares $k$-Schrittverfahren heißt $A$-stabil, falls alle Lösungen von

gegen Null gehen ($n\to\infty$), wenn das Verfahren mit fester Schrittweite $h$ auf Differentialgleichungen der Form $\dot y=\lambda y$ angewendet wird, mit einer festen komplexen Konstante $\lambda$, mit negativen Realteil.

Die Beschränkung auf lineare $k$-Schrittverfahren ist unwesentlich. Die Beschäftigung mit zyklischen linearen Verfahren hat zu einem nicht unmaßgeblichen Teil ihren Ursprung in der zweiten Dahlquist-Barriere. Diese besagt, daß $A$-stabile, lineare Mehrschrittformeln keine beliebig hohe Ordnung erreichen können: maximal die Ordnung zwei. Durch die drastische Einschränkung der Vielfalt $A$-stabiler, linearer Mehrschrittverfahren werden zwei Erweiterungen nahegelegt: Abschwächung des Begriffes der $A$-Stabilität und Hinzufügung größerer Klassen von Verfahren. Zur Quantifizierung von Stabilitätseigenschaften einerseits und zur Abschwächung der $A$-Stabilität andererseits dienen die nachstehenden Definitionen.

2. Definition: Bezeichne ${\cal S}[\delta]$ eine zusammenhängende und offene Teilmenge der komplexen Ebene mit dem Ursprung als Randpunkt, die mindestens einen unendlich großen Teil der linken Halbebene enthält mit Elementen $z$ der Form

Nun heißt ein Verfahren $S[\delta]$-stabil, falls so eine Menge ${\cal S}[\delta]$ existiert derart, daß wenn man das Verfahren auf die lineare und zeitinvariante Differentialgleichung $\dot y=\lambda y$ anwendet, die mit dem Verfahren berechneten Lösungen $y_n$ gegen Null streben, wenn $n\to\infty$, für eine feste positive Schrittweite $h$, falls immer $\lambda h=H \in {\cal S}[\delta]$. Existiert kein unendlich großer Bereich der linken Halbebene, so werde von nicht $S[\delta]$-stabil gesprochen. Im Falle der Existenz heißt das betragsmässig kleinste $\delta$ die Widlund-Distanz, nach Olof B. Widlund.

Diese Definition hat eine sehr anschauliche Interpretation, wenn man das Gebiet ${\cal S}[\delta]$ aufzeichnet. Von besonderem Interesse ist hier das betragsmässig kleinstmögliche $\delta$. Nur von diesem kleinstmöglichen $\delta$ wird im weiteren überhaupt noch die Rede sein. Gleiche Anschaulichkeit hat auch die folgende Definition.

3. Definition: Sei ${\cal A}[\alpha]$ eine zusammenhängende und offene Teilmenge der komplexen Zahlenebene mit Elementen $z$ der Form

Jetzt heißt das Verfahren $A[\alpha]$-stabil, wenn es w.o. eine derartige Menge ${\cal A}[\alpha]$ gibt derart, daß die berechneten Näherungen dieses Verfahren gegen Null streben, für $n\to\infty$, wenn man das Verfahren auf die Differentialgleichung $\dot y = \lambda y$ anwendet. Diese Abklingeigenschaft soll immer dann gelten, wenn $\lambda h=H \in {\cal A}[\alpha]$ gilt, für feste positive Schrittweite $h$. Für $\alpha\notin\left[0,90^\circ\right]$ werde von nicht $A[\alpha]$-stabil gesprochen. Im Falle der Existenz nennt man den größtmöglichen Winkel $\alpha$ auch den Widlund-$\alpha$-Winkel, ebenfalls nach Olof B. Widlund.

In sinnfälliger Verallgemeinerung nennt man ein Verfahren $A[0]$-stabil, wenn es ein $\alpha$ gibt, sodaß das Verfahren $A[\alpha]$-stabil ist. ${\cal A}[0]$ ist in $\mathbb{C}$ nicht offen. Wie die obige Definition kann man diese Eigenschaft wiederum sehr anschaulich deuten. Hier gilt je größer der Winkel $\alpha$, desto besser. Bei der vorherigen Definition galt je kleiner $\delta$, desto günstiger. Durch ein größeres $\alpha$, bzw. kleineres $\delta$, werden die entsprechenden Mengen ${\cal A}[\alpha]$, bzw. ${\cal S}[\delta]$, “größer”.

Bei den beiden Defintionen beachte man, daß ${\cal S}[\delta]$ die Menge bezeichnet und $S[\delta]$ die dazugehörige Eigenschaft. Entsprechend gilt dies für ${\cal A}[\alpha]$ und $A[\alpha]$. Man stellt schnell fest, daß ein Verfahren stets $A[\alpha]$-stabil ist, für ein gewisses $\alpha(\delta)$, wenn es $S[\delta]$-stabil ist. Die Umkehrung ist nicht notwendig richtig. Bei den noch folgenden Eigenschaften $A_{\infty}[\alpha]$ und $S_{\infty}[\delta]$ wird dies jedoch der Fall sein. Ist $\delta = 0$ oder $\alpha = 90^\circ$, so ist dies das gleiche wie $A$-Stabilität. Beide Werte führen zur selben Menge, nämlich der gesamten linken komplexen Halbebene ohne die imaginäre Achse.

4. Beispiele: (1) Die impliziten BDF der Ordnung $p=1$ bis $p=6$ erfüllen mit gewissen $\alpha$ und $\delta$ die obigen Stabilitätseigenschaften.

(2) Sämtliche zyklischen Verfahren von Tendler (1973), oder Tendler/Bickart/Picel (1978) sind ebenfalls Beispiele für Verfahren, die $A[\alpha]$- bzw. $S[\delta]$-stabil sind. Zusätzlich sind die Formeln von Tendler auch $A_\infty^0[\alpha]$- und $S_\infty^0[\delta]$-stabil. (Definition folgt.)

(3) Genauso sind auch alle zyklischen Formeln von Peter E. Tischer (1983) und Tischer/Sacks-Davis (1983) alle $A[\alpha]$- bzw. $S[\delta]$-stabil, sogar $A_\infty^0[\alpha]$- und $S_\infty^0[\delta]$-stabil.

(4) Die 10 blockimpliziten Verfahren von Bickart/Picel (1973) sind alle $A[\alpha]$- und $S[\delta]$-stabil, sogar $A_\infty^0[\alpha]$- und $S_\infty^0[\delta]$-stabil.

(5) Explizite Verfahren mit konstanter Schrittweite erfüllen die obigen Eigenschaften nicht. Das explizite Euler-Verfahren mit konstanter Schrittweite ist also weder $A[\alpha]$- noch $S[\delta]$-stabil und zwar für kein $\alpha$ und kein $\delta$.

Bibliographisch: Tischer, Peter E.: "The Cyclic Use of Linear Multistep Formulas for the Solution of Stiff Differential Equations", Ph.D. Thesis, Department of Computer Science, Monash University, Clayton, Victoria, Australia, August 1983, x+180 S.

Tischer, Peter E. und Sacks-Davis, Ron: "A New Class of Cyclic Multistep Formulae for Stiff Systems", SIAM Journal on Scientific and Statistical Computing, Vol 4, No 4, December 1983, pp.733—747.

Bickart, Theodore A. und Picel, Zdenek: "High Order Stiffly Stable Composite Multistep Methods for Numerical Integration of Stiff Differential Equations", BIT, Vol 13, 1973, pp.272—286

2. Schreibweise zusammengesetzter Mehrschrittformeln

1. Wann nun ein Verfahren diese Eigenschaften hat, wird durch sein charakteristisches Polynom bestimmt. Dieses Polynom in zwei komplexen Veränderlichen erhält man nun wie folgt.

Den gesamten $\ell$-stufigen Zyklus

kann man als eine einzige Matrixdifferenzengleichung notieren, nämlich

mit $\kappa=\lceil k/\ell \rceil$. $\kappa$ ist hierbei die kleinste ganze Zahl, die größer oder gleich $k/\ell$ ist. Die insgesamt $\kappa+1$ Matrizen $A_i$, $B_i$ haben die Größe $\ell\times\ell$. Es genügen genau dann zwei Matrizen $A_1$ und $A_0$, bzw. $B_1$ und $B_0$, wenn $\kappa=1$ ist, also $k\le\ell$.

Vergrößert man die Dimensionen der Matrizen $A_i$ und $B_i$ mit Hilfe von sogenannten Trivialstufen ($1=1$ Stufen), so läßt sich natürlich die Anzahl der Matrizen verringern, z.B. auf genau zwei, also $A_0$ und $A_1$, bzw. $B_0$ und $B_1$. Bei den zyklischen Verfahren von J.M. Tendler ist stets $\kappa\le2$, d.h. man kommt mit jeweils höchstens drei Matrizen zur Beschreibung der Matrixdifferenzengleichung aus.

2. Die Matrizen $A_i$ und $B_i$, für $i=0,\ldots,\kappa$ lauten:

und

beziehungsweise

und so weiter bis zu den Matrizen $A_0$, $B_0$ und Vektoren $Y_m$. Allgemein also

für $i=0,\ldots,\kappa$. Die $B_i$ analog wie die $A_i$.

3. Bei einer vektorwertigen Funktion mit $n$ Komponenten hat man die oben angegebenen Matrizen zu ersetzen durch

Hierbei ist $I_n$ die $n\times n$-Einheitsmatrix und $\otimes$ bezeichnet das Kroneckerprodukt, nach Leopold Kronecker (1823—1891). In den meisten Fällen kann man auf diese gesonderte Notierung verzichten, u.a. weil gilt $\left|A\otimes I_n\right| = \left|A\right|$.

4. Beispiele: (1) Im Falle einstufiger Zyklen, also $\ell=1$, reduziert sich die obige Matrixdifferenzengleichung zu der gewöhnlichen skalaren Differenzengleichung für lineare Mehrschrittverfahren, mit $A_i=\alpha_i$, $B_i=\beta_i$ und $Y_i=y_i$.

(2) Das lineare zweistufige zyklische $A_\infty^0$-stabile Verfahren der Ordnung 4, also $k=4$, $p=4$ und $\ell=2$, von Tischer (1983) und Tischer/Sacks-Davis (1983), soll in der obigen Schreibweise angegeben werden. Die zu den Werten

gehörigen Koeffizienten lauten

wobei alle Koeffizienten auf eine Stelle hinter dem Komma gerundet worden sind, also der “Konsistenzschnelltest” $\rho(1)=0$ hier immer $\pm0.1$ ergibt.

In der Schreibweise als Matrixdifferenzengleichung w.o. ergibt sich nun unmittelbar

Eine typische Eigenschaft der Formeln von Tischer (1983) und Tischer/Sacks-Davis (1983) ist die relativ geringe Äquilibrierung der $\beta_{ij}$-Werte. Bei diesem Verfahren beträgt sie über 1:20. Für die Ordnung $p=8$ hat man sogar Verhältnisse von 1:130. Maßgeblich betrifft dies stets die letzte Stufe der immer zweistufigen Zyklen.

Die Formeln von Tendler (1973) besitzen diese Eigenschaften nicht. Bei gewöhnlichen Quadratur- und Kubaturformeln für $y=\int_a^b f(x) dx$ ist bekannt, daß diese Eigenschaft unerwünscht ist.

(3) Das zweistufige, zyklische Verfahren DH3 von Donelson/Hansen (1971)

Donelson III, John und Hansen, Eldon: "Cyclic Composite Multistep Predictor-Corrector Methods", SIAM Journal on Numerical Analysis, Vol 8, 1971, pp.137—157

Die Stabilität definierenden Matrizen sind:

Die charakteristische Gleichung ist

Keinesfalls müssen zyklische Verfahren nur zweistufig sein. Die Stufenzahl eines zyklischen Verfahrens unterliegt keiner Schranke, außer, daß diese Anzahl nicht unendlich ist und daß diese Anzahl dabei fest ist. Gleichzeitig erkennt man, daß eine formale Übertragung $\det Q(\mu,H)={\cal O}(H^{p+1})$ ($\mu=e^H$) scheitert, weil z.B. für DH3 gilt

nach Substitution von $\mu=e^H$.

5. Es ist natürlich ebenso möglich die Linearisierung des obigen Matrixpolynoms zu betrachten, jedoch werden dann die Dimensionen der Matrizen größer, falls $\kappa>1$, also $k>\ell$ ist. Das Verfahren schreibt sich dann in der Form $z_{n+1}=Az_n+h\varphi_n$, oder $Lz_{n+1}=Uz_n+h\varphi_n$.

3. Stabilität und Polynome

1. Das charakteristische Polynom lautet

Man beweist jetzt, daß das verwendete Verfahren genau dann $A[\alpha]$-stabil bzw. $S[\delta]$-stabil ist, wenn die sämtlichen Nullstellen $\mu$ von $\det Q(\mu,H)=0$, alle betragsmässig kleiner eins sind, für alle $H \in {\cal A}[\alpha]$, bzw. alle $H \in {\cal S}[\delta]$. Die Eigenschaft eines Polynomes $Q(\mu,H)$ für ein spezielles $H_0$ sämtliche Wurzeln in der offenen Einheitskreisscheibe zu haben, nennt man absolut-stabil. ${\cal A}[\alpha]$ und ${\cal S}[\delta]$ sind also Mengen der absoluten Stabilität.

Äquivalent hierzu ist, daß das Verfahren genau dann $A[\alpha]$-stabil ist, bzw. $S[\delta]$-stabil ist, falls alle Nullstellen $H$ von $\det Q(\mu,H)=0$ im Komplement von ${\cal A}[\alpha]$, bzw. im Komplement von ${\cal S}[\delta]$, liegen, für alle $\mu$ aus dem Komplement der offenen Einheitskreisscheibe. Man erhält somit den folgenden Test.

2. Test A: Ein Verfahren ist genau dann $A[\alpha]$-stabil, bzw. $S[\delta]$-stabil, falls

1. die Nullstellen $\mu$ von $\det Q(\mu,H_0)$ für ein festgehaltenes beliebiges $H_0 \in {\cal A}[\alpha]$, bzw. $H_0 \in {\cal S}[\delta]$, sämtlich betragsmässig kleiner 1 sind und gleichzeitig
2. die Kurve der Punkte $H$, die $\det Q(\mu,H)|_{\mathopen|\mu\mathclose|=1} = 0$ erfüllen, im Komplement von ${\cal A}[\alpha]$, bzw. im Komplement von ${\cal S}[\delta]$ liegen.

Leider sind Verfahren, die die obigen beiden Eigenschaften erfüllen, noch nicht wirklich gut zur Integration von steifen Differentialgleichungen geeignet. Dies liegt u.a. daran, daß wenn $\mathopen|H\mathclose|$ $(\mathop{\rm Re}\nolimits H<0)$ immer größer wird, die Nullstellen $\mu$ von $\det Q(\mu,H)=0$ betragsmässig gegen eins streben könnten. Integriert man jedoch $\dot y = \lambda y$ ($\mathop{\rm Re}\nolimits \lambda<0$) so würde dies heißen, daß es eine Lösung gibt mit $\mathopen|y_{n+1}/y_n\mathclose| \to 1$. Diese Eigenschaft spiegelt sicherlich nicht das wahre Verhalten der Lösung wider. Diese Eigenheit hat z.B. die Trapezregel

Aus diesem Grunde sind Verfahren günstiger bei denen die Nullstellen $\mu$ bei $\mathop{\rm Re}\nolimits H=-\infty$ von $\det Q(\mu,H)=0$ in der offenen Einheitskreisscheibe liegen, also keinerlei Wurzeln des Betrages eins auftauchen. Damit hätte man die Trapezregel als zwar $A$-stabiles Verfahren, letztlich ausgesondert. Um diesen Wunsch zu präzisieren und um handliche Begriffe bereitzustellen, seien diese Anforderungen nun nomenklaturmässig genauer festgelegt.

4. Verschärfung von Stabilitätsdefinitionen

Suppose, for example, that it is known that the planetary system is stable “in the past”. If it captures a new body, say, a speck of dust arriving from “infinity”, then the newly formed system of bodies looses its stability: with probability one, either a collision occurs, or one of the bodies escapes again at infinity. Moreover, it is by no means necessary that the speck of dust is the one that leaves the Solar system: Jupiter, or even the Sun may equally well leave.

V.I. Arnold, V.V. Kozlov, A.I. Neishtadt (1988), Mathematical Aspects of Classical and Celestial Mechanics

Bibliographisch: Vladimir Arnold (1937—2010), Valery Vislevich Kozlov (*1950), Anatoly Neishtadt.

Es liegt nun nahe, die Begriffe $A[\alpha]$-Stabilität und $S[\delta]$-Stabilität zu verfeinern. Hierzu wird das Verhalten der Differenzengleichung für $\mathop{\rm Re}\nolimits H\to-\infty$ mit in die Nomenklatur integriert. Dies führt jetzt zur

1. Definition: (1) Ein $S[\delta]$-stabiles Matrixpolynom $Q(\mu,H)$ mit der Eigenschaft, daß die sämtlichen Nullstellen $\mu$ für $\mathop{\rm Re}\nolimits H\to-\infty$ in der offenen, Kreisscheibe $\{z\in\mathbb{C}: \mathopen|z\mathclose|<r\}$ liegen, nennt man $S_\infty^r[\delta]$-stabil. Für $r=1$ sagt man abkürzend nur $S_\infty[\delta]$-stabil.

(2) Analog definiert man $A_\infty^r[\alpha]$-Stabilität als Erweiterung der $A[\alpha]$-Stabilität. Erneut bezeichnet $A_\infty[\alpha]$-Stabilität die Abkürzung für $A_\infty^1[\alpha]$-Stabilität.

(3) Für $r=0$ ist $r\to0$ gemeint, also: Die sämtlichen Nullstellen $\mu$ für $\mathop{\rm Re}\nolimits H\to-\infty$ verschwinden. Hierfür schreibt man $A_\infty^0[\alpha]$- bzw. $S_\infty^0[\delta]$-stabil.

(4) Der Wert $r$ bei der $S_\infty^r[\delta]$- bzw. $A_\infty^r[\alpha]$-Stabilität heißt Widlund-Endradius. I.a. wird ein kleinstmöglicher Wert angegeben und von dem Widlund-Endradius gesprochen.

Hat ein Verfahren das Matrixpolynom $Q(\mu,H)$, so vererbt sich der entsprechende Name auf das Verfahren. Genauso hätte man auch die $A[\alpha]$- bzw. $S[\delta]$-Stabilität einführen können. Die Werte $\alpha$ und $\delta$ bei den Stabilitätsdefinitionen werden in der Schreibweise unterdrückt, wenn die Wert $\alpha=90^\circ$, bzw. $\delta=0$ betragen, genau w.o. auch.

Die Definition von $A_\infty^0$-Stabilität verallgemeinert offensichtlich den Begriff der L-Stabilität für Einschrittverfahren.

Offensichtlich ist jedes $A_\infty^{r_1}[\alpha]$-stabiles Polynom auch $A_\infty^{r_2}[\alpha]$-stabil, falls $r_1<r_2$, nicht jedoch immer umgekehrt. Gleiches gilt für die entsprechend andere Stabilitätseigenschaft, also jedes $S_\infty^{r_1}[\delta]$-stabile Polynom ist natürlich auch $S_\infty^{r_2}[\delta]$-stabil, falls $r_1<r_2$. Insbesondere ist jedes $A_\infty^0[\alpha]$-stabile Polynom auch $A_\infty[\alpha]$- und $A[\alpha]$-stabil.

I.d.R. wird man ein kleinstmögliches $r$ bei größtmöglichen $\alpha$, bzw. ein kleinstmögliches $r$ bei kleinstmöglichem $\delta$, anstreben.

Welche der Eigenschaften insgesamt am günstigsten ist, kann allgemein nicht gesagt werden. Man hat hier einen Zielkonflikt. Dies hängt auch von der zu lösenden Differentialgleichung ab. Weiß man im voraus, daß beispielsweise die zu lösende lineare Differentialgleichung $\dot y=Ay$ eine Jacobimatrix $A$ mit nur negativen reellen Eigenwerten hat, so ist ein großer Widlund-$\alpha$-Winkel unerheblich. Aber selbst einer beliebigen festen Matrix anzusehen, ob sie nur reelle Eigenwerte hat, ist keine triviale Aufgabe.

2. Beispiele: (1) Die BDF der Ordnung $p=1$ bis $p=6$, die Formeln von Peter Tischer aller Ordnungen und auch die Formeln von Tendler aller Ordnungen sind $A_\infty^0[\alpha]$- und $S_\infty^0[\delta]$-stabile Verfahren. Aber auch die blockimpliziten Verfahren von Bickart/Picel (1973) sind $A_\infty^0[\alpha]$- und $S_\infty^0[\delta]$-stabile Verfahren.

(2) Liniger/Gagnebin (1974) zeigten u.a., daß

$A_\infty^0=S_\infty^0$-stabil ist für $0\le\xi\le16$. Der lokale Fehler ist hierbei

Für $\xi=-4$ erhält man die BDF3, welche $A_\infty^0[86.03^\circ]$- und $S_\infty^0[0.083]$-stabil ist.

Werner Liniger (1927—2017) und Gagnebin, Thierry: "Construction of a Family of Second Order, $A$-Stable $k$-Step Formulas Depending on the Maximum Number, $2k-2$, of Parameters", in "Stiff Differential Systems", Editor Ralph A. Willoughby, Plenum Press, New York and London, 1974, pp.217—227

(3) Für ein nicht-triviales Beispiel, wo diese Eigenschaften erfüllt, aber auch möglicherweise nicht erfüllt sind, kann man wie folgt vorgehen. Kombiniert man in zyklischer Reihenfolge $i$-mal das explizite und $j$-mal das implizite Eulerverfahren, so erhält man sofort für die Nullstelle $\mu$ von $\det Q(\mu,H)$ die Gleichung

der man augenblicklich ansieht, daß für betragsmässig große $H$ mit negativem Realteil, die Nullstelle $\mu$ sich wie untenstehend verhält:

Interessant hierbei ist, daß eine Kombination impliziter Verfahren mit expliziten Verfahren dennoch $A_\infty^0[\alpha]$-stabil, bzw. $S_\infty^0[\delta]$-stabil sein kann. Bei partiellen Differentialgleichungen, wo die Implizitheit von Formeln häufig noch schwerlastiger auf die gesamte Rechenzeit einwirken, werden sogar tatsächlich Kombinationen von expliziten und impliziten Verfahren verwendet, beispielsweise beim leapfrog-DuFort/Frankel-Verfahren, oder beim odd-even-hopscotch-Verfahren.

Schwächt man noch weiter ab, daß also nicht mehr konstante Schrittweiten zu nehmen sind, sondern auch variable Schrittweiten, so kann man sogar alleine mit expliziten Verfahren prinzipiell auskommen. Der Hinweis auf das Prinzipielle deswegen, weil die resultierenden Verfahren nicht notwendig auch im praktischen Gebrauch gut einsetzbar sind.

Beim expliziten Eulerverfahren liegen die Verhältnisse besonders durchsichtig vor. Hier ist

und offensichtlicherweise kann man durch ein geeignet gewähltes $H_i$, mit $1\le i\le\nu$ das obige Produkt zum Verschwinden bringen. Bei vektorwertigen Differentialgleichungen liegen die Verhältnisse nicht mehr so einfach. John (Jack) D. Lambert in Lambert (1986) äußert sich hier in größerem Umfange zu dieser Problematik. Hans Jörg Stetter reißt dieses Thema kurz in seinem Buch "Analysis of Discretization Methods for Ordinary Differential Equations" von 1973 an, in dem Abschnitt über die Stabilitätsbereiche zyklischer Verfahren.

3. Weiteren Aufschluß über die Stabiltät eines linearen Verfahrens erhält man, wenn man versucht zu quantifizieren, wie schnell die vom Verfahren gelieferten Näherungswerte abklingen. Für genügend rasch abfallende Lösungen ist die folgende Stabilitätsmenge von Interesse:

Dies sind also diejenigen Zahlen $H$, sodaß $\det Q(\mu,H)$ verschwindet, dabei $\mu$ aber stets aus der offenen Kreisscheibe $D_r$ ist. Weiter werden jetzt die Mengen ${\cal A}[\alpha]$ und ${\cal S}[\delta]$ verallgemeinert zu Mengen, die den Radius $r$ mit berücksichtigen. Hier ist insbesondere natürlich $0<r<1$ von Interesse. Es seien also die Mengen betrachtet

und

Zur Zeichnung des Randes $\partial{\cal Y}_r$ löst man genügend oft das verallgemeinerte Eigenwertproblem in $H$ zu

Mit $\varphi$ durchläuft man dann eine diskrete Teilmenge von $[0^\circ,180^\circ]$, zum Beispiel $\varphi = 0^\circ, 20^\circ, \ldots, 160^\circ, 180^\circ$. Mit $r$ wandert man von $r=1$ beispielsweise in $(-1/10)$ Schritten nach $r=0.1$. Damit erhält man also die Höhenlinien der “Funktion” $H(r)$, bzw. von $H(\mu)$. Die “Funktion” $H(r)$ ist implizit definiert. Die Betragsfunktion $\left|\cdot\right|$ wähle dann unter den mehreren möglichen “Funktionswerten”, den betragsmässig größten aus, ordnet also letztlich jedem $re^{i\varphi}$ eine komplexe Zahl $H$ zu. Das bivariable Polynom $\det Q(\mu,H)$ ist natürlich algebraisch. Lösungsäste algebraischer Funktionen haben höchstens algebraische Singularitäten. $\partial{\cal Y}_r$ kann aus mehreren Zusammenhangskomponenten bestehen, insbesondere für kleiner werdende $r$ ziehen sich die “kreisförmigen” Komponenten immer mehr zu den Nullstellenpunkten von $\det Q(\mu,0)=0$ zusammen.

Ein mehr geometrisch-anschaulich motivierter Ansatz geht von der Betrachtung von $\mu(H)$ aus. Dann löst man das verallgemeinerte Eigenwertproblem in $\mu$ zu

auf einem Gitter von $\mathbb{C}$ für genügend viele $H$ und zeichnet entweder nur die betragsmässig größten $\mu$, oder zeichnet mehrere Schichten ein. Eine räumliche Veranschaulichung dieses Sachverhaltes findet man in Wanner (1987).

Wanner, Gerhard: "Order Stars and Stability", in "The State of the Art in Numerical Analysis", Proceedings of the joint IMA/SIAM conference held at the University of Birmingham, 14–18 April 1986, Edited by A. Iserles and M.J.R. Powell, Clarendon Press, Oxford, 1987, 451—471

Für das verallgemeinerte Eigenwertproblem empfehlen sich die Unterprogramme cqzhes(), cqzval() und cqzvec() von Burton S. Garbow (1978), und Garbow (1984), welche eine Implementierung des QZ-Algorithmuses von Moler/Stewart (1973) darstellen. Aufgrund der Reellität der Matrixkoeffizienten, also

ist das Stabilitätsgebiet stets achsensymmetrisch zur reellen Achse $\mathbb{R}\subset\mathbb{C}$. Die Eigenvektoren mittels cqzvec() werden für obige Stabilitätsüberlegungen nicht benötigt.

Bibliographisch: Cleve Moler und G.W. "Pete" Stewart. Verfahrensbeschreibung: An Algorithm for the Generalized Matrix Eigenvalue Problem Ax = Lambda Bx. Ferner Burton S. Garbow.

4. Bei dem, wie schon oben angegebenen charakteristischen Polynom

erhält man für immer mehr dominierendes $H$ schließlich im Grenzfalle das Polynom $\det Q(\mu,\infty)$ zu

in etwas nachlässiger, aber sehr suggestiver Schreibweise. Es ist hier interessant zu vermerken, daß jetzt $A_{\infty}[\alpha]$- und $S_{\infty}[\delta]$-Stabilität zueinander äquivalent sind, für geignete $\alpha$ und $\delta$. Dies ist ein weitergehendes Ergebnis, als man es von der $A[\alpha]$- und $S[\delta]$-Stabilität her kannte.

5. Um nun zu überprüfen ob ein Verfahren sogar $A_{\infty}[\alpha]$-stabil, bzw. $S_{\infty}[\delta]$-stabil ist, erweitert man die 1.te Bedingung im Test A zu einer neuen Bedingung (1) und erhält damit den

6. Test B: Ein Verfahren ist $A_\infty^r[\alpha]$-stabil, bzw. $S_\infty^r[\delta]$-stabil genau dann, wenn:

1. die Nullstellen von $\det Q(\mu,\infty)$ liegen in der offenen Einheitskreisscheibe und
2. die Kurve der Punkte $H$, die $\det Q(\mu,H)|_{\mathopen|\mu\mathclose|=r} = 0$ erfüllen, im Komplement von ${\cal A}[\alpha]$, bzw. im Komplement von ${\cal S}[\delta]$ liegen.

7. Eine Möglichkeit die Bedingung (1) bei Test B zu erfüllen ist, wie es u.a. Gear (1968) vorgeschlagen hat, daß man alle Nullstellen $\mu$ von $\det Q(\mu,\infty)=0$ zu Null setzt. Dies ist z.B. der Fall, wenn man fordert:

Eine einfache, notwendige und hinreichende Bedingung wird später angegeben. Von der Sicht des Speicherplatzes, des Rechenbedarfs und der programmiermässigen Einfachheit, sind diese Nullen besonders vorteilhaft einsetzbar. Diese Vorteile werden in dem Programm TENDLER genutzt. Das Programm ODIOUS kann diese Vorteile natürlich nicht nutzen, aufgrund $B_i\ne0$, für $i=0,\ldots,\kappa$.

Zusammen mit der Bedingung (LMSV) ergibt nun die Bedingung (NULL), daß

Nun enthält jede Stufe des Zykluses der Ordnung $p=k$, die der Bedingung (LMSV) und (Null) genügt, noch $\min\{i,k+1\}$ Parameter. Jede Stufe kann aber noch skaliert werden, ohne die Stabilitätseigenschaften zu verändern, d.h. von jeder Stufe muß man noch einen freien Parameter abziehen. Es bleiben dann $\min\{i-1,k\}$ völlig frei bestimmbare Parameter für die $i$-te Stufe, also ist

Wählt man die $\beta_{ij}$ für $0<j<i$, alle zu Null, so erhält man wieder die BDF. In diesem Sinne kann man die zyklischen Formeln von J.M. Tendler als echte Verallgemeinerung der einstufigen BDF auffassen. In der Tat unterscheiden sich die Formeln auch nicht allzu sehr in ihren Eigenschaften und in ihren Ergebnissen, die sie liefern, insbesondere ist bei den zyklischen Verfahren von Tendler die erste Stufe auch immer gleich der entsprechenden BDF.

8. Die sämtlichen bisherigen Stabilitätsdefinitionen gehören zur “Begriffswelt” der absoluten Stabilität, nicht jedoch zur relativen Stabilität. Für den Begriff der relativen Stabilität benötigt man die folgenden Überlegungen. Sei

Dann ist

Sei $\mu=1$ einfache Nullstelle von

Da dann $\mu=1$ separiert ist, folgt aufgrund der stetigen Abhängigkeit der Wurzeln für genügend kleine $h$

das ist die Fortpflanzung der Separiertheit für genügend kleine $h$. Jetzt muß aber

gelten, damit $Q(\mu,H)={\cal O}(h^{p+1})$ für $\mu=e^H$, aufgrund der Konsistenz von $L$.

9. Definition: Ein Matrixpolynom

heißt konsistent mit mindestens der Konsistenzordnung $p$ genau dann, wenn die formale Ersetzung der Skalare $\mu^i$ ($i=0,\ldots,k$) durch die Vektoren

($\mu=e^H$) dann liefert

Das Matrixpolynom $Q(\mu,H)$ ist konsistent mit der genauen Ordnung $\min_{i=1}^\ell p_i$. Gilt $p_i\ge1$ ($\forall i$), so heißt das Matrixpolynom konsistent. Möchte man die besondere Form

besonders betonen, so spricht man von polynomial-konsistent.

Die obige Definition verallgemeinert $\rho(e^h)-h\sigma(e^h)={\cal O}(h^{p+1})$ auf $\ell$-Mehrstufigkeit mit $m$-facher Ableitung für äquidistante Gitter. Die Konsistenz nach obiger Festlegung ist eine Eigenschaft des Matrixpolynomes. Sie vererbt sich sinngemäß auf das Verfahren, welches dem Matrixpolynom i.d.R. zugrunde liegt.

Zur besseren Unterscheidung zwischen absoluter und relativer Stabilität seien beide einander gegenübergestellt.

10. Definition: (10.1) Ein Matrixpolynom $Q\mu,H)$ heißt absolut-stabil für ein $H_0$ genau dann, wenn für die sämtlichen Nullstellen $\mu$ von $\det Q(\mu,H_0)=0$ gilt: $\mathopen|\mu\mathclose|<1$.

(10.2) Die Menge ${\cal Y}_1$ derjenigen $H$, für die das Matrixpolynom $Q(\mu,H)$ absolut-stabil ist, also

heißt Menge der absoluten Stabilität.

Offensichtlich gilt: Enthält ${\cal Y}_1$ die offene, linke komplexe Halbebene $\mathbb{C}^-$, so ist das Verfahren $A$-stabil.

11. Definition: (11.1) Ein konsistentes Matrixpolynom $Q(\mu,H)$, für welches $\mu=1$ einfache Nullstelle von $\det Q(\mu,0)=0$ ist, heißt relativ-stabil für ein $H_0$ genau dann, wenn gilt

$\mu_1(H)$ ist also die zu $\mu_1(0)=1$ gehörende Nullstelle, wobei $Q(\mu_i(H),H)=0$ ($i\ge1$). Hat $\det Q(\mu,H)$ in $\mu$ nur den Grad 1, so sei das Matrixpolynom $Q(\mu,H)$ relativ-stabil.

(11.2) Die Menge $\cal Z$ derjenigen $H$, für die das Matrixpolynom $Q(\mu,H)$ relativ-stabil ist, also

heißt Menge der relativen Stabilität.

Im Falle eines linearen Differentialgleichungssystems $\dot y=Ay\in\mathbb{R}^n$ mit diagonalähnlicher Matrix $A$ entstehen bei Transformation $n$ skalare Differentialgleichungen. Eigenwerte von $A$ mit stark negativen Realteil, also $\mathop{\rm Re}\nolimits \lambda\ll0$, führen zu schnell abklingenden Lösungen. In diesem Falle zu forden, daß die Nebenwurzeln $\mu_i(H)$ die Hauptwurzel $\mu_1(H)$ nicht betragsmässig übersteigen ist nur wichtig, wenn man an sehr hoher relativer Genauigkeit interessiert ist, sonst allerdings nicht. Wesentlicher ist in diesem Falle die absolute Stabilität. Man ist an Exponentialtermen nur so lange interessiert, wie sie einen im Rahmen der Rechengenauigkeit signifikanten Einfluß auf das Gesamtergebnis besitzen. Spielen stark abklingende Terme keine Rolle mehr, so genügt absolute Stabilität. Dies motiviert die

12. Definition: (12.1) Ein konsistentes Matrixpolynom $Q\mu,H)$ heißt $LR$-$S[\delta]$-stabil genau dann, wenn es $S[\delta]$-stabil ist und das um den Ursprung angeordnete Rechteck

mit $a_1<0<a_2$, $b_1<0<b_2$ Teilmenge der Menge der relativen Stabilität ist.

(12.2) Analog definiert man $LR$-$S_\infty^r[\delta]$- und $LR$-$A_\infty^r[\alpha]$-Stabilität.

$LR$ soll an lokal-relativ erinnern. Die Festlegung auf ein Rechteck ist nicht wesentlich. Genauso gut hätte man eine Kreisscheibe, eine elliptische Scheibe, ein Hexagon, etc. nehmen können, solange es um den Ursprung angeordnet ist. Je umfassender $\cal R$ ist, desto günstiger. Die Begrenzung in $b_1$ und $b_2$ rührt daher, daß Exponentialterme mit stark imaginären Anteil, aber geringen negativen Realteil als Exponent, noch mehr Eigenschaften benötigen als relative Stabilität. Für Differentialgleichungen mit periodischen Lösungen sind gesonderte Formeln besser geeignet.

Abweichend von der Definition in Gear (1968) und auch abweichend von der Definition in Werner/Arndt (1986), aber völlig sinnentsprechend wie in Tendler/Bickart/Picel (1978), in Bickart/Picel (1973) und in Albrecht (1979), sei wie folgt definiert.

13. Definition: Ein konsistentes Matrixpolynom $Q(\mu,H)$, welches einer oder mehrerer der Bedingungen der $A[\alpha]$-, $S[\delta]$-, oder $LR$-$A[\alpha]$-, $LR$-$S[\delta]$-Stabilität genügt, heißt steif-stabil.

Bibliographisch:

1. Theodore A. Bickart (1936—2023), obituary,
2. Werner, Helmut (1931—1985),
3. Arndt, Herbert,
4. Gear, Charles William (1935—2022),
5. Peter Albrecht.

Bickart, Theodore A. und Picel, Zdenek: "High Order Stiffly Stable Composite Multistep Methods for Numerical Integration of Stiff Differential Equations", BIT, Vol 13, 1973, pp.272—286

Albrecht, Peter: “Numerische Behandlung gewöhnlicher Differentialgleichungen”, Jül-1274, Februar 1976, Berichte der Kernforschungsanlage Jülich, Institut für Festkörperforschung, Kopie

5. Konstruktive Herleitung steif-stabiler zyklischer Formeln

A computer program for plotting both the Lambda and Zeta Loci was presented and described. Using an interactive version of this program new and efficient cyclic composite linear multistep methods of orders three through seven were obtained. $\ldots$
The test for stiff stability of a composite linear multistep method presented herein is entirely graphical. $\ldots$
Interactive communication was via a teletypewriter, the only device available for this purpose at the computer facility used.

J.M. Tendler (1973)

1. In diesem Abschnitt wird darauf eingegangen, wie die in dem Programm TENDLER verwendeten Formeln, von Tendler (1973) entwickelt wurden. Neben der schon mehrfach erwähnten Dissertation von J.M. Tendler, findet man eine Darstellung der Parametrisierung von Verfahren in dem Aufsatz von Donelson/Hansen (1971). U.a. weitere Hinweise zur Konstruktion generell zyklischer Verfahren und auch steif-stabiler zyklischer Verfahren, einschließlich entsprechender Parametrisierungen, findet man in dem Buch von Albrecht (1979).

Die beiden Aufsätze von Mihelčić (1977), Mihelčić (1978), die Veröffentlichung von Mihelčić/Wingerath (1981), und die Disserattion von Tischer (1983), die Arbeit Tischer/Sacks-Davis (1983) bzw. Tischer/Gupta (1985), liefern ebenfalls Aufschluß über die Gewinnung zyklischer, steif-stabiler Verfahren. Tischer/Gupta (1985) äußern sich dort mehr zu den Erfahrungen mit den von Tischer (1983)2 und Tischer/Sacks-Davis (1983)3 gewonnen Formeln, wobei auch weitere zyklische Formeln in die Bewertung mit eingeschlossen werden.

Die Dissertation von Tischer (1983) und die Arbeit von Tischer/Sacks-Davis (1983) geben sogar zweistufige $A_\infty^0$-stabile zyklische Verfahren an bis zur Ordnung $p\le4$. Über der Ordnung $p>4$ sind die weiterhin zweistufigen Zyklen noch $A_\infty^0[\alpha]$-stabil, mit $\alpha$=$86^\circ$, $76^\circ$, $57^\circ$, und $22^\circ$. Die Formeln erfüllen sogar noch zahlreiche weitere wünschenswerte Eigenschaften, allerdings haben sie auch gewisse Nachteile.

Bibliographisch. Matija (Miško) Mihelčić (1935—2011), Peter E. Tischer.

Matija Mihelčić (Mihelcic): "Fast $A$-stabile Donelson-Hansensche zyklische Verfahren zur numerischen Integration von 'stiff'-Differentialgleichungssystemen", Angewandte Informatik, 1977, Vol 19, Heft 7, pp.299—305

Matija Mihelčić (Mihelcic): "$A(\alpha)$-Stable Composite Multistep Methods of Order 5", Computing, Vol 20, 1978, pp.267—272

Matija Mihelčić (Mihelcic) und K. Wingerath: "$A(\alpha)$-stable Cyclic Composite Multistep Methods of Orders 6 and 7 for Numerical Integration of Stiff Ordinary Differential Equations", ZAMM, Band 61, 1981, pp.261—264

Tischer, Peter E.: "The Cyclic Use of Linear Multistep Formulas for the Solution of Stiff Differential Equations", Ph.D. Thesis, Department of Computer Science, Monash University, Clayton, Victoria, Australia, August 1983, x+180 S.

Tischer, Peter E. und Sacks-Davis, Ron: "A New Class of Cyclic Multistep Formulae for Stiff Systems", SIAM Journal on Scientific and Statistical Computing, Vol 4, No 4, December 1983, pp.733—747.

2. Für die gestellte Aufgabe zur Gewinnung neuerer und besserer Verfahren für die Integration steifer Differentialgleichungen ging Tendler (1973) wie folgt vor: Man entwerfe zyklische Formeln der Konvergenzordnung 1 bis 6, die Ordnung für Ordnung bessere Stabilitätseigenschaften besitzen als die BDF. Falls möglich sollten sogar Verfahren mit einer Ordnung höher als 6 entwickelt werden. Als Vergleichsmaßstab wurde der Widlund-$\alpha$-Winkel gewählt. Andere Kriterien spielten keine Rolle.

Die Bedingungen (Null) und (LMSV) an die Koeffizienten $\alpha_{ij}$ und $\beta_{ij}$, sorgen dafür, daß der Zyklus stets die folgende Form hat

Die BDF erster und zweiter Ordnung

sind beide $A_{\infty}^0[\alpha]$-stabil mit optimalen Widlund-Winkel von $\alpha=90^\circ$ und optimaler Widlund-Distanz $\delta=0$, sodaß damit eine weitere Verbesserung nicht mehr möglich ist, wenn man wie gesagt nur den Widlund-$\alpha$-Winkel als Vergleichsmaßstab nimmt. Diese beiden Verfahren werden daher auch für $p=1$ und entsprechend für $p=2$ in dem Programm TENDLER verwendet.

Die $i$ Parameter in der $i$-ten Stufe deuten darauf hin, daß $i$ linear unabhängige Formeln in geeigneter Kombination ausreichen, um ein neues Verfahren zu konstruieren. Für die Ordnungen $p=3$ und höher, wurde daher wie folgt die Suche nach besseren Formeln durchgeführt:

1. Im ersten Schritt wurden zyklische Formeln gewonnen, die die Bedingung (LMSV) und (Null) erfüllen und
2. im zweiten Schritt wurde der Widlund-$\alpha$-Winkel numerisch berechnet und mit dem entsprechenden Winkel für die BDF verglichen.
3. War dann der Winkel größer und damit besser, wurde die Suche abgebrochen, andernfalls wurden die Parameter weiter variiert und der erste Schritt, ggf. mit einer anderen Stufenzahl $\ell$, erneut durchgeführt.

Beim ersten Schritt ging man wie folgt vor. Zuerst wurde eine Folge von $k+1$ linear unabhängigen Mehrschrittformeln aufgestellt, sodaß die $\beta$-Koeffizienten eine Diagonalmatrix bilden. Wegen der linearen Unabhängigkeit ist dies immer zu erreichen. Diese Diagonalform erleichtert das Generieren von Zyklen mit der Eigenschaft

Da nur Linearkombinationen von diesen Mehrschrittformeln gebildet werden, ist das Erfülltsein von (LMSV) ebenfalls sofort klar. Dann wurde für jedes $i=1,\ldots,\ell$ eine Linearkombination dieser Formeln berechnet um daraus die $i$-te Stufe des Zykluses zu bilden. Die Stufenzahl $\ell$ wurde versucht so klein wie möglich zu halten.

Um das Vorgehen zu illustrieren ein längeres Beispiel.

3. Beispiel: Es seien die $k+1=4$ linear unabhängigen Mehrschrittformeln $F1$ bis $F4$ der Konsistenzordnung 3 betrachtet:

Jede Zeile der Matrix ist dabei das entsprechende Mehrschrittverfahren, also die erste Zeile ist F1, die zweite ist F2 und so fort. Das Verfahren $F1$ ist implizit, während hingegen $F2$, $F3$ und $F4$ explizite Verfahren sind. Wie so häufig gilt auch hier, daß die einzelnen Stufen instabil sind, mit Ausnahme der ersten, welche gerade die BDF3 ist, mit den Nullstellen 1 und $0.3\overline{18}\pm 0.284i$. Die Nullstellen der zweiten “Zeile” liegen bei 1, $-2.686$ und $0.186$. Die dritte “Zeile” hat die Nullstellen 1, $5.372$ und $-0.372$ und schließlich die letzte vierte Zeile hat die Nullstellen 1 und $1.75\pm 1.561i$. Diese Instabilität der Stufen bzw. von Komponenten der Stufen, überträgt sich nicht automatisch auf den Gesamtzyklus. Die Stabilität des Gesamtzyklus wird getrennt überprüft.

Von diesem Arsenal an Formeln wurde nun der Zyklus für das Verfahren dritter Ordnung, wie folgt aufgebaut: Jede Stufe wurde als Linearkombination der $F1$ bis $F4$ erhalten, d.h. die $i$-te Stufe ist gleich

Um nun die Bedingung (NULL) zu erfüllen, muß offensichtlich $c_{ij}=0$ für $j>i$ gelten. Der Widlund-$\alpha$-Winkel wurde jetzt für die Werte maximiert:

Der so gebildete Zyklus der Ordnung $p=3$ kann daher wie folgt geschrieben werden:

Weil der Widlund-$\alpha$-Winkel grösser und damit besser als der entsprechende Winkel für BDF3 ausgefallen war, wurde der Zyklus akzeptiert. Die Formeln der Konvergenzordnung $p=4$ bis $p=7$ wurden auf genau die oben beschriebene Art und Weise erhalten. Daß bei diesem Beispiel die ersten beiden Stufen gleich sind, nämlich hier gleich BDF3, ist mehr oder minder Zufall. Mit der Bedingung $c_{ij}=0$ für $i>j$ hat dies nichts zu tun. Beim zyklischen Verfahren sechster Ordnung sind auch tatsächlich alle Stufen untereinander verschieden. Bei allen anderen Verfahren hingegen, außer eben bei $p=6$, sind die ersten beiden Stufen gleich und zwar gleich der entsprechenden BDF.

4. Es waren 3 Stufen nötig für die Verfahren 3.ter und 4.ter Ordnung und 4 Stufen für die Formeln 5.ter, 6.ter und 7.ter Ordnung. Die genauen Zahlenwerte für die Koeffizienten aller Zyklen werden später in einem Schema angegeben. Es sei angemerkt, daß immer die ersten beiden Stufen des $i$-ten Zykluses mit BDF$i$ beginnen. Dies gilt bei allen Verfahren, außer bei der Ordnung $p=6$. Dort ist es nur die 1.te Stufe.

5. Zum Vergleich seien einmal die Werte für den Widlund-$\alpha$-Winkel für die neuen zyklischen Mehrschrittverfahren, die in dem Programm TENDLER verwendet werden, mit denen der BDF in der untenstehenden Tabelle gegenübergestellt. Auch findet man die entsprechenden Werte für die Formeln, die in der Dissertation Tischer (1983), bzw. Tischer/Sacks-Davis (1983) entwickelt haben, unter der Spalte ODIOUS. BP73 bezeichnet hier die blockimpliziten Verfahren von Bickart/Picel (1973). Die BDF$i$, für alle $i\ge7$, sind nicht $D$-stabil, also natürlich erst recht nicht $A[\alpha]$- bzw. $S[\delta]$-stabil. Einen Beweis und alternative Beweisansätze findet man in dem Buch von Hairer/Wanner/Nørsett (1987) oder hier Hairer/Wanner (1983): On the Instability of the BDF Formulas.

Zyklische Verfahren über der Ordnung $p=7$ werden in dem Programm TENDLER nicht verwendet. Die Programme LSODE, LSODA und LSODAR benutzen die BDF lediglich bis zur Ordnung $p=5$. Rechts daneben ist auch eine Gegenüberstellung der $\delta$-Werte bei der $S_{\infty}[\delta]$-Stabilität.

Widlund-$\alpha$-Winkel

Widlund-Distanz $\delta$

Die Widlund-Winkel der BDF können exakt bestimmt werden: Gander/Wanner (2020): Exact BDF stability angles with maple und Akrivis/Katsoprinakis (2019): Maximum angles of $A(\vartheta)$-stability of backward difference formulae, PDF.

6. Die besseren Stabilitätseigenschaften, die sich durch den größeren Widlund-$\alpha$-Winkel bemerkbar machen, erlauben nun einem Programm, welches die hergeleiteten Formeln benutzt, früher die Schrittweite zu erhöhen, da sie nicht durch Stabilitätsbeschränkungen verkleinert werden muß. Insbesondere für Differentialgleichungen, bei denen die Eigenwerte der Jacobimatrix nahe der imaginären Achse sind, sollten besser integriert werden können.

Das Suchverfahren nach steif-stabilen zyklischen Formeln wird beschrieben in der Dissertation von Tendler (1973). Dort wird auch ein Programm zur Berechnung des Widlund-$\alpha$-Winkels angegeben, basierend auf einem Polynomlöser. Das hier beschriebene Suchverfahren hängt von einem Programm zur Berechnung des Widlund-Winkels ab.

Man beachte, daß alle Verfahren interaktiv gefunden wurden: “Probieren-gucken”, “probieren-gucken”, $\ldots$
Wenn also hier von “maximiert” gesprochen wird, ist damit gemeint, daß durch Suchen, nicht jedoch kalkülmässig, in geschlossener Form, eine Maximierung stattgefunden hat. Sieht man einmal von grundsätzlichen Einstellungen ab, so kann man diesem pragmatischen Ansatz seine Bedeutung nicht absprechen.

Es wurde auch versucht ein Verfahren der Konvergenzordnung $p=8$ zu erhalten, welches steif-stabil ist, doch gelang dies nicht. Dies führt Tendler (1973) darauf zurück, daß eben nur interaktiv gesucht wurde. Eine andere Möglichkeit wird darin gesehen, daß die Begrenzung der Anzahl der Stufen auf $\ell=4$ zu restriktiv gewesen sei.

Testläufe haben ergeben, daß die Auffindung von zyklischen Verfahren mit mehr als 4 Stufen durchaus sinnvoll sein kann. Oder m.a.W., die Erfahrungen mit dem Programm TENDLER deuten darauf hin, daß Zyklen mit mehr als 4 Stufen nicht krass den praktischen Bedürfnissen widerstreben. Ob diese Erfahrung grundsätzlich für geeignete vielstufige Zyklen sich bestätigen könnte, kann selbstverständlich nicht pauschal postuliert werden. Ein Einbau solcher Formeln in das Programm TENDLER zumindestens wäre völlig unproblematisch. Da jede Stufe Element einer ringzyklischen Liste ist, macht es keinen Aufwand hier eine weiteres Ringelement einzufügen. Zudem ist die Konstante 4 als Programmkonstante MAXYRING abgelegt.

Außer Konstantenänderungen sind keine Änderungen nötig, insbesondere keine algorithmischen, vorausgesetzt es handelt sich um echte Verallgemeinerungen der BDF, wie es beispielsweise die Tendlerschen Zyklen darstellen. Man beachte hierzu die Ausführungen bzgl. der Prädiktorformeln. Zu berücksichtigen ist jedoch, daß der Speicherplatzbedarf dann größer wird, allerdings nur in linearen Termen der Dimension $n$ der Differentialgleichung. Dies nur, falls die Ordnung 7 übersteigt. Dies liegt an der Notwendigkeit zur Bildung rückwärtsgenommener Differenzen bis zur Ordnung $p+1$ in dem Programm TENDLER.

6. Basisformeln der Tendlerschen Zyklen

1. Die Bestandteile der zyklischen Formeln von Tendler (1973) lauten:

Die in jeder Tabelle ganz rechts stehende Formel, ist immer die BDF. Die restlichen Formeln sind explizite Verfahren. Alle unten aufgeführten Formeln benötigen $k$ Startwerte und besitzen die Konsistenzordnung $p=k$. Die im folgenden angegebenen Basisformeln sind also ersteinmal nur für die Konstruktion von Zyklen der Konvergenzordnung $p=k$ geeignet. Wünscht man andere Konvergenzordnungen, bei anderer Schrittzahl, so gelten die Überlegungen jedoch entsprechend. Berücksichtigt man den Effekt der annullierten Dominanz, so sind die angegebenen Basisformeln auch für zyklische Verfahren der Konvergenzordnung $p=k+1$ geeignet. Unter den Verfahren befindet sich stets der entsprechende, gänzlich unskalierte Fehlerfaktor, der berechnet wurde nach der Vorschrift

Die Basisformeln im einzelnen.

2. Die Werte zur Bildung der Linearkombination der zyklischen Formeln von Tendler lauten in der Reihenfolge $p=3,4,5$ und $p=6,7$ wie folgend:

7. Äquilibrierung von Formeln

Es folgt die Definition von Äquilibrierungsmaßen für eine konsistente Formel $F$ der Form

1. Definition: Eine Formel $F$ hat

(1) Gaußsches-$\alpha$-Äquilibrierungsmaß

(2) Gaußsches-$\beta$-Äquilibrierungsmaß $\mu_\beta^G := \lVert F\rVert_2^2/\beta_\kappa^2$,

(3) Gauß-Henrici-Äquilibrierungsmaß $\mu_H^G := \lVert F\rVert_2^2 / (\sigma(1))^2$,

(4) Tschebyscheff-$\alpha$-Äquilibrierungsmaß

(5) Tschebyscheff-$\beta$-Äquilibrierungsmaß $\mu_\beta^T := \lVert F\rVert_\infty / \lVert\beta_\kappa\rVert$,

(6) Tschebyscheff-Henrici-Äquilibrierungsmaß $\mu_H^T := \lVert F\rVert_\infty / \lVert\sigma(1)\rVert$.

Sollten Zyklen mit geringem Äquilibrierungsmaß in den führenden Koeffizienten stark flukturieren, so kann man daran denken, bei der Suche nach günstigen Formeln die folgende Deviation der führenden Koeffizienten klein zu halten. Sei $\gamma:=\beta_{ii}/\alpha_{ii}$. Es gibt $({\ell\atop2})$ zyklusinterne Deviationen. Man begrenzt dann beispielsweise die Gaußsche Deviation der Koeffizienten, nämlich $\sum_{i<j}(\gamma_i-\gamma_j)^2$.

2. Beispiel: Sei $\ell=3$. Es gibt ${\ell\choose2} = {3\choose2}=3$ Deviationen. Man fordert Beschränktheit, oder in besonderen Situationen auch Minimalität, durch

Es sollen nun einige Eigenschaften der Äquilibrierungsmaße hergeleitet werden. Es handelt sich hier um direkt aus der Definition herleitbare Aussagen.

3. Satz: Es gelten

(1) $\mu_\beta^T\ge1$, $\mu_\alpha^T\ge1$. Die Ungleichungen sind scharf, beispielsweise für die beiden Euler-Verfahren

(2) $\mu_\alpha^G>1$, $\mu_\beta^G>1$.

(3) $\mu_H^T$ und $\mu_H^G$ sind stets definiert für $D$-stabile Verfahren, wegen $\rho'(1)=\sigma(1)\ne0$, da 1 keine mehrfache Nullstelle sein darf.

Die $\alpha$-Äquilibrierungsmaße treten vornehmlich im Zusammenhang mit expliziten gewöhnlichen Differentialgleichungen der Form $\dot y=f(t,y)$ auf. Die $\beta$-Äquilibrierungsmaße treten bei DAE auf, die man mit linearen Mehrschrittverfahren löst, und die Henrici-Äquilibrierungsmaße treten gehäuft im Zusammenhang mit Einbein-Verfahren auf. Man ist grundsätzlich, ersteinmal ohne Einschränkungen, an möglichst kleinen Äquilibrierungsmaßen interessiert. Bei Quadraturformeln ist aus Erfahrung bekannt, daß große Äquilibrierungsmaße ungünstig sind, da diese Quadraturformeln zu Oszillationen neigen. Jedoch bedeuten kleine Äquilibrierungsmaße nicht auch automatisch kleine Fehlerkonstanten. Gegenbeispiele anhand numerisch gewonnener Formeln sind bekannt.

1. Statistics of this Blog: Crossed 110.000 Views
2. Statistics of this Blog: Crossed 120.000 Views
3. URL Count Statistics

I do not use cookies or any JavaScript libraries to track users. Instead I only analyze the web-server logs using a Perl script. To doublecheck the accuracy of this Perl script I occasionally inserted analytics code from

1. statcounter
2. clicky
3. Google Analytics
4. Cloudflare Analytics
5. Heap Analytics
6. CISCO smartlook

These analytics provider used cookies, and JavaScript. Therefore my site was not cookie-free, when I employed them.

Nowadays I no longer employ those bulky JavaScript libraries. I resort to the web-server logfile. There are a number of advantages and disadvantages.

Advantages:

1. The user does not have to be concerned about cookies
2. The user does not need to download bulky JavaScript libraries
3. The user does not need to make yet another connection to any other server

Disadvantages:

1. The detection of bots and nonsense access is a little more cumbersome; there seems to be no ready-to-use software to filter out all the bots, so I had to write it myself, see accesslogFilter
2. There seems to be no off-the-shelf software to fully analyze weblogs and generate diagrams, so I had to write it myself, see blogurlcnt

Below are the statistics for the year 2024. Some key figures using filtered data.

1. Ca. 18,000 "real" accesses as can be seen by looking at pagefind-ui.js, i.e., someone not loading this JavaScript is in many cases not a real reader
2. On average there are ca. 1,000 monthly accesses for "real" posts
3. Most intensive access is HetrixTools
4. Best post was Hosting Static Content with GitLab, which had more than 4,500 views in July 2024, and more than 1,300 views in August
5. Second best was Performance Comparison C vs. Java vs. Javascript vs. LuaJIT vs. PyPy vs. PHP vs. Python vs. Perl having 100-200 views per month

1. URL statistics

Below is the output of the Perl script blogurlcnt. I.e., the output is filtered.

The generated output uses JavaScript DataTables. DataTables allow easy filtering and sorting within the table.

Combine that with Apache ECharts to show histograms to get a visual representation of the development of various URLs over time.

Above table and charts where generated with below command:

time blogconcatlog 67 | pv | tee /tmp/a2 | accesslogFilter -o >(tee /tmp/a1.stat | blogstatcnt -m3000 > /srv/http/statcnt.html) | tee /tmp/a1 | blogurlcnt -m470 > /srv/http/urlstat2-m100.html

I.e., the "uncount" statistics are dropped if they count less than 3,000 entries. Likewise the statistics and charts are only shown for entries, which have more than 470 views.

2. Uncount statistics

The "uncount" statistics is called "uncounted", as these number were not counted in above statistics, i.e., they were filtered out. This filtering was done using accesslogFilter.

A key issue with analyzing the raw web-server log is to filter out all irrelevant entries. Examples of irrelevant entries are:

1. My own access to my blog on my own local network, i.e., on 127.0.0.1 or localhost
2. Various bots from Google, Ahrefs, Yahoo, etc.
3. HTTP codes 404 (not found), etc.
4. IP address ranges from webhosting platforms or known AI platforms

Below table shows what filters are most effective. Some noteworthy highlights:

1. There are more than 9-times more irrelevant accesses than good ones, as given by column %good in first row with "Sum total". Or phrased differently: only roughly 10% of all accesses are relevant.
2. The major factor of all HTTP codes, which are irrelevant, is 404 (not found)
3. The most active bots, which can only be identified by IP address range, are in the class B subnet 162.55, which is Hetzner's your-server.de; these bots are more intense than all HTTP error codes combined
4. Ahrefs is the most frequent visitor of all bots (ca. 21%), way before Google bot (4.7%); in line with observations from last year: Website Checking with Ahrefs
5. It is interesting that Yandex is searching the blog more frequently than Bing

It is possible to generate all HTML files on Android using Simplified Saaze! This post shows the necessary steps.

The main trick is to use termux. I had written on termux here: ssh and rsync for Android, Termux.

1. Installing PHP and C compiler

Install the C compiler and Git.

pkg install clang git autoconf

gcc is not available on termux, therefore we chose clang. Git is required further down, when we install MD4C. Autoconf is required for all PHP extensions, which use configure.

Simplified Saaze is written in PHP. Therefore we need PHP and optionally composer.

pkg install php composer

composer is not strictly requiered, but convenient when you want to install one of the many themes.

2. Installing PHP yaml extension

First install libyaml library:

pkg install libyaml

Next download latest tar-ball from PECL yaml package. Untar the file

tar zxf yaml-2.2.4.tgz

Do the usual three-step:

phpize
./configure
make

Once all has been built, the module is copied or moved to the PHP extension library directory:

mv modules/yaml.so /data/data/com.termux/files/usr/lib/php/

3. Installing MD4C extension

Clone the git directory including its submodule:

git clone --recurse-submodules https://github.com/eklausme/php-md4c.git

The reason for this is that termux does not provide MD4C in its package repositories.

Now the rest is standard again with the usual three-step procedure.

phpize
./configure
make

After the build, move or copy the MD4C so-file.

mv modules/md4c.so /data/data/com.termux/files/usr/lib/php/

4. Setting php.ini

For PHP to use yaml and MD4C we have to edit php.ini. It is stored in

/data/data/com.termux/files/usr/etc/php/php.ini

The content is then:

opcache.enable=1 
opcache.jit_buffer_size=100M
opcache.jit=1255

short_open_tag = 0

extension=md4c
extension=yaml

Regarding JIT configuration see PHP 8: How to setup the JIT.

Once all is installed and configured, first check with php -m, then check PHP with phpinfo(): Create a file phpinfo.php with below content.

<?php
    phpinfo();
?>

Then start the builtin web-server of PHP:

php -S <your-IP-address>:8000 -t .

Assuming that the phpinfo.php file is in your current directory (therefore -t .). Check in your browser whether the yaml and MD4C extension are visible in the output of phpinfo().

5. Running Simplified Saaze

Below you will find my entire blog processed on Android. My blog happens to reside in the directory sndsaaze. For that I simply copied it to termux:

tar cf - sndsaaze | ssh x14 'cd ~/php; tar xf -'

Finally:

$ time php saaze -mort
Building static site in ./build...
        execute(): filePath=./content/error.yml, nSIentries=0, totalPages=0, entries_per_page=20
        execute(): filePath=./content/music.yml, nSIentries=83, totalPages=5, entries_per_page=20
        execute(): filePath=./content/gallery.yml, nSIentries=11, totalPages=1, entries_per_page=20
        execute(): filePath=./content/blog.yml, nSIentries=491, totalPages=25, entries_per_page=20
        execute(): filePath=./content/aux.yml, nSIentries=8, totalPages=1, entries_per_page=20
Finished creating 5 collections, 4 with index, and 625 entries (0.44 secs / 23.44MB)
#collections=5, parseEntry=0.0145/629-5, md2html=0.0363, toHtml=0.0413/625, renderEntry=0.2265/625, renderCollection=0.0101/36, content=625/0

real    0m0.471s
user    0m0.339s
sys     0m0.120s

This entire blog can be processed with Simplified Saaze on Android within less than half a second. These runtimes are for an Xiaomi 14T Pro model.

When using the parallel option in Simplified Saaze the runtime can be brought down to a quarter second.

$ time php saaze -mort -p8
Building static site in ./build...
        execute(): filePath=./content/error.yml, nSIentries=0, totalPages=0, entries_per_page=20
        execute(): filePath=./content/music.yml, nSIentries=83, totalPages=5, entries_per_page=20
        execute(): filePath=./content/gallery.yml, nSIentries=11, totalPages=1, entries_per_page=20
        execute(): filePath=./content/blog.yml, nSIentries=491, totalPages=25, entries_per_page=20
        nentries=510, procnr=00, pid=24969
        nentries=510, procnr=01, pid=24970
        nentries=510, procnr=02, pid=24971
        nentries=510, procnr=03, pid=24972
        nentries=510, procnr=04, pid=24973
        nentries=510, procnr=05, pid=24974
        nentries=510, procnr=06, pid=24975
        execute(): filePath=./content/aux.yml, nSIentries=8, totalPages=1, entries_per_page=20
Finished creating 5 collections, 4 with index, and 115 entries (0.24 secs / 19.54MB)
#collections=5, parseEntry=0.0149/629-5, md2html=0.0364, toHtml=0.0410/625, renderEntry=0.0535/115, renderCollection=0.0142/36, content=625/0

real    0m0.275s
user    0m0.182s
sys     0m0.084s

1. Saaze example, a pure example theme, simple to use and modify
2. J-Pilot, showcasing an open-source software project and having a hierarchical menu
3. Koehntopp, a blog for a computer scientist
4. NukeKlaus, a blog for a nuclear power engineer
5. Mobility, a multilingual site for promoting software for battery management used in electric vehicles
6. Vonhoff, a German site for a doctoral student
7. Paternoster, a blog of a web developer
8. Panorama, a site for a restaurant showing their rooms and their menu
9. Lemire, a site for a computer science professor
10. Wendt, a German political blog

Here we present yet another theme called "Myra West".

The theme is for a blog about psychology, friendship, and personal journaling of a female writer with an artistic touch. Therefore it has a pink background, blossoms as a hero image, a kind of artistic font, etc.

In Converting Myra West's vlog to blog I described how I used the YouTube video content to remodel it as a text blog, with some sprinkles of:

• mindmaps
• galleries

1. Key features

Some key features of the theme:

1. Lightweight
2. Responsive with media breaks at 40rem and 60rem
3. The hero image is showing a parallax, see W3 schools example
4. Static site search using pagefind

The theme uses three Google fonts:

1. Libre Baskerville for the main body of text
2. Charm for headlines
3. Mea Culpa for some artistic feeling in the headlines for the first character

As each blog post is essentially the transcript of an already existing YouTube video, each frontmatter references the YouTube video like this:

---
date: "2019-08-12 12:00:00"
title: "21 Years Old: I Have NO Friends"
youtube: "QfbCMjNj9q8"
---

2. Installing the theme

Installing this theme including Simplified Saaze goes like this:

composer create-project eklausme/saaze-myrawest

The source code is in saaze-myrawest.

3. Building a static blog

Below is the command to build:

$ time php saaze -rb /tmp/build
Building static site in /tmp/build...
        execute(): filePath=./content/blog.yml, nSIentries=22, totalPages=2, entries_per_page=20
Finished creating 1 collections, 1 with index, and 23 entries (0.02 secs / 3.07MB)
#collections=1, parseEntry=0.0005/23-1, md2html=0.0010, toHtml=0.0012/23, renderEntry=0.0016/23, renderCollection=0.0003/3, content=23/0
        real 0.03s
        user 0.02s
        sys 0
        swapped 0
        total space 0

Option -b is entirely superfluous. It specifies the build directory. In our case this is /tmp/build, which happens to be a RAM disk in Arch Linux. If this option is not given then Simplified Saaze stores the static files in the build directory of the current directory.

Option -r generates an RSS feed.

The time command is only used to demonstrate that converting 23 Markdown files to HTML is pretty quick.

4. Using pagefind

The Myra West template includes static search, i.e., entering any search word will immediately show search results. There is no server backend doing the search.

Generating all required static search files using pagefind goes like this:

klm@chieftec /tmp/build: time pagefind -s . --exclude-selectors aside --exclude-selectors footer --force-language=en

Running Pagefind v1.3.0
Running from: "/tmp/build"
Source:       ""
Output:       "pagefind"

[Walking source directory]
Found 29 files matching **/*.{html}

[Parsing files]
Did not find a data-pagefind-body element on the site.
↳ Indexing all <body> elements on the site.

[Reading languages]
Discovered 1 language: en

[Building search indexes]
Total:
  Indexed 1 language
  Indexed 29 pages
  Indexed 2828 words
  Indexed 0 filters
  Indexed 0 sorts

Finished in 0.212 seconds
        real 0.25s
        user 0.16s
        sys 0
        swapped 0
        total space 0

Once all the search-files have been created, you move the pagefind directory to the public directory.

If you do not want this search functionality, then you can simply ignore this.

5. Templates

I use the following hierarchy of PHP files for my entry-template, i.e., the template for a blog post:

The following hierarchy is used for the index-template, i.e., the template for showing a reverse-date sorted list of blog posts:

Myra West has no blog. Below are the steps to convert her YouTube talks to a blog.

1. Getting transcript

Sometimes YouTube offers transcripts, but sometimes they are not available. To get the raw text I used YouTube Transcript. Though, sometimes that didn't work at all. I then switched to kome.

There are YouTube videos where YouTube Transcript is not able to generate any meaningful text. For example, for below videos it failed:

1. "If You Struggle to Make Friends"
2. "when you feel like you have nothing to offer, you can do this..."
3. "when you are terrified by how FAST time flies"

kome also failed in all cases here. In that case I recorded the video with my smartphone and had Google voice recorder produce text. Obviously, that's quite an act. But even then, some parts of above video were not understood by Google voice recorder.

I used copy-paste to copy the text to a text editor, where I added frontmatter:

---
date: "2019-08-12 12:00:00"
title: "21 Years Old: I Have NO Friends"
youtube: "QfbCMjNj9q8"
---

2. Getting punctuation

Unfortunately the transcript from neither YouTube nor YouTube-Transcript contains punctuation. To get this I asked Google Gemini. I used below prompt:

Put punctuation into below text:

<Copy-paste text>

I tried ChatGPT, Claude, MS Copilot, and Gemini: they all only allow a few paragraphs to punctuate. Microsoft Copilot says it only allows 8,000 characters. These limitations are quite a nuisance.

Therefore you have to repeat above step a couple of times. But at this point you have at least a transcript including punctuation.

3. Proofreading

The transcript needs proofreading. In particular, I meticulously checked that Google Gemini did not drop any word!

ChatGPT is very keen on hallucinating and adding content on its own.

For this I used:

bcompare <(perl -npe 's/\s+/\n/g' ~/php/saaze-myrawest/raw/$1) <(perl -npe 's/\s+/\n/g' ~/php/saaze-myrawest/content/blog/$1) &

I.e., I compared the raw transcript with the punctuated transcript.

During proofreading I

• dropped duplicate words,
• deleted unfinished parts of sentences,
• dropped fillwords, like "and", "um", "like", etc.

I also added occasional headings. In some posts I even added Markmap mindmaps. In one post I added a gallery.

I added links, i.e., I made use of hypertext. In videos there seems to be no equivalent, i.e., there is no hypervideo, except when you use JavaScript trickery.

4. Result

As can be seen from above steps, the process is quite manual. As of now it doesn't seem to be amenable to automation.

As of today, 08-Dec-2024, Myra West has produced 82 videos. I did not convert all of them. I converted those, which contain a lot of spoken text. The converted vlog is here: Myra West's blog.

I already own a Xiaomi Tablet 6, with which I am very happy. So changing from OnePlus / Oppo to Xiaomi was an easy choice. Add to that, that the Oppo phone did no longer receive kernel updates, and OnePlus / Oppo no longer sell their devices in Germany due to patent trolls.

Marketing descriptions for the Xiaomi 14T Pro are here.

The technical specs are given below.

Testing internet speed on https://fast.com:

The CPU according lscpu:

Architecture:                       aarch64
CPU op-mode(s):                     64-bit
Byte Order:                         Little Endian
CPU(s):                             8
On-line CPU(s) list:                0-7
Vendor ID:                          ARM
Model name:                         Cortex-A720
Model:                              1
Thread(s) per core:                 1
Core(s) per socket:                 4
Socket(s):                          1
Stepping:                           r0p1
CPU(s) scaling MHz:                 15%
CPU max MHz:                        2000.0000
CPU min MHz:                        300.0000
BogoMIPS:                           26.00
Flags:                              fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh bti ecv afp wfxt
Model name:                         Cortex-X4
Model:                              1
Thread(s) per core:                 1
Core(s) per socket:                 4
Socket(s):                          1
Stepping:                           r0p1
CPU(s) scaling MHz:                 48%
CPU max MHz:                        3400.0000
CPU min MHz:                        550.0000
BogoMIPS:                           26.00
Flags:                              fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 sm3 sm4 asimddp sha512 sve asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp sve2 sveaes svepmull svebitperm svesha3 svesm4 flagm2 frint svei8mm svebf16 i8mm bf16 dgh bti ecv afp wfxt
Vulnerability Gather data sampling: Not affected
Vulnerability Itlb multihit:        Not affected
Vulnerability L1tf:                 Not affected
Vulnerability Mds:                  Not affected
Vulnerability Meltdown:             Not affected
Vulnerability Mmio stale data:      Not affected
Vulnerability Retbleed:             Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass:    Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1:           Mitigation; __user pointer sanitization
Vulnerability Spectre v2:           Not affected
Vulnerability Srbds:                Not affected
Vulnerability Tsx async abort:      Not affected

Linux kernel after one HyperOS update according uname -a:

Linux localhost 6.1.57-android14-11-g2de3ba70f288-ab11985038 #1 SMP PREEMPT Tue Jun 18 13:21:55 UTC 2024 aarch64 Android

Storage is plentiful: 12 GB RAM, 512 GB SSD. As usual, some of this storage is used for internal purposes and therefore not directly available to you.

$ df -h | grep tmpfs
Filesystem                Size Used Avail Use% Mounted on
tmpfs                     5.4G 3.3M  5.4G   1% /dev
tmpfs                     5.4G  38M  5.4G   1% /mnt
tmpfs                     5.4G  28K  5.4G   1% /apex
$ df -h | grep storage
Filesystem                Size Used Avail Use% Mounted on
/dev/fuse                 481G  22G  458G   5% /storage/emulated

A good review of the smartphone is here: Verdict on the Xiaomi 14T Pro.

A video review by Mike Chudley of the camera of the Xiaomi phone is here:

Observations so far:

1. The fingerprint sensor is reacting very quick, way quicker than the Oppo fingerprint sensor. That's good.
2. There is no double tap to lock the phone, but you can use: Additional setting - Accessibility - Accessibility menu. With this you can activate something similar.
3. The 5,000 mAh battery seems to deplete faster than the 4,000 mAh battery of the Oppo phone, i.e., the Oppo phone lasts longer. That is unexpected and bad.
4. The Oppo phone (7.6mm) is clearly slimmer than the Xiaomi (8.39mm). It is also lighter: 209g vs. 172g.

Added 16-Feb-2025: Another video review by "Unbox Therapy".

Added 21-Jun-2025: A German review. Xiaomi 14T Pro im Test: Jetzt ist es endlich auch ein Preis-Hit!

Error message during login and booting:

Nov 19 10:53:19 chieftec kernel: snd_hda_intel 0000:08:00.6: Codec #0 probe error; disabling it...
Nov 19 10:53:19 chieftec kernel: snd_hda_intel 0000:08:00.6: no codecs initialized

Solution: Add below three lines to /etc/modprobe.d/alsa-base.conf:

options snd-hda-intel single_cmd=1
options snd-hda-intel probe_mask=1
options snd-hda-intel model=basic

On my machine this file did not exist previously.

I found this solution here: [SOLVED]snd_hda_intel: no codecs found - no sound by user broncosman.

Though, even after above change there are still quite a number of messages in the log:

Nov 21 08:39:56 chieftec kernel: snd_hda_intel 0000:08:00.1: spurious response 0x0:0x0, last cmd=0x1f0500
Nov 21 08:39:56 chieftec kernel: snd_hda_intel 0000:08:00.1: spurious response 0x200:0x0, last cmd=0x970740
Nov 21 08:39:56 chieftec kernel: snd_hda_intel 0000:08:00.1: spurious response 0x0:0x0, last cmd=0x377200