Porting systemd To New Distributions
+HOWTO:
You need to make the follow changes to adapt systemd to your
distribution:
- 0) Make your distribution recognized via the autoconf checks
- in configure.ac. Grep for the word "fedora" (case
- insensitively) and you should be able to find the places where
- you need to add/change things.
-
- 1) Patch src/hostname-setup.c so that systemd knows where to
- read your host name from.
-
- 2) Check the unit files in units/ if they match your
- distribution. Most likely you will have to make additions to
- units/*.m4 and create a copy of units/fedora/ with changes for
- your distribution.
-
- 3) Adjust Makefile.am to register the unit files you added in
- step 2. Also you might need to update the m4 invocation in
- Makefile.am. Grep for the word "fedora" (case insensitively)
- and you should be able to find the places where you need to
- add/change things.
-
- 4) Try it out.
+ 1) Find the right configure parameters for:
+
+ --with-rootprefix=
+ --with-sysvinit-path=
+ --with-sysvrcnd-path=
+ --with-rc-local-script-path-start=
+ --with-rc-local-script-path-stop=
+ --with-kbd-loadkeys=
+ --with-kbd-setfont=
+ --with-tty-gid=
+ --with-ntp-servers=
+
+ 2) Try it out. Play around (as an ordinary user) with
+ '/usr/lib/systemd/systemd --test --system' for a test run
+ of systemd without booting. This will read the unit files and
+ print the initial transaction it would execute during boot-up.
+ This will also inform you about ordering loops and suchlike
+
+NTP POOL:
+
+ By default, timesyncd uses the Google NTP servers
+ time[1-4].google.com. They serve time that is not standards
+ compliant, and can be up to .5s off. Google does not
+ officially support these servers for the broader
+ audience. Distributions and vendors really should not ship
+ OSes or devices with these NTP servers configured. Instead,
+ please register your own vendor pool at ntp.org and make it
+ the built-in default by passing --with-ntp-servers= to
+ configure. Registering vendor pools is free:
+
+ http://www.pool.ntp.org/en/vendors.html
+
+ Again, if you ship your software or device with the default
+ NTP servers, then you will get served wrong time, and will
+ rely on services that might not be supported for long.
CONTRIBUTING UPSTREAM:
- We are interested in merging your changes upstream, if they
- are for a big, and well-known distribution. Unfortunately we
- don't have the time and resources to maintain
- distribution-specific patches for all distributions on the
- planet, hence please do not send us patches that adds systemd
- support to non-mainstream or niche distributions.
+ We generally do no longer accept distribution-specific
+ patches to systemd upstream. If you have to make changes to
+ systemd's source code to make it work on your distribution,
+ unless your code is generic enough to be generally useful, we
+ are unlikely to merge it. Please always consider adopting the
+ upstream defaults. If that is not possible, please maintain
+ the relevant patches downstream.
Thank you for understanding.