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eb10a764 LP |
1 | Porting systemd To New Distributions |
2 | ||
1486dbe1 | 3 | HOWTO: |
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4 | You need to make the follow changes to adapt systemd to your |
5 | distribution: | |
6 | ||
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7 | 1) Find the right configure parameters for: |
8 | ||
9 | --with-rootprefix= | |
10 | --with-sysvinit-path= | |
dee4c244 | 11 | --with-sysvrcnd-path= |
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12 | --with-rc-local-script-path-start= |
13 | --with-rc-local-script-path-stop= | |
14 | --with-kbd-loadkeys= | |
15 | --with-kbd-setfont= | |
16 | --with-tty-gid= | |
2ed3de9c | 17 | --with-ntp-servers= |
b74d0fdf | 18 | --with-support-url= |
bc270841 | 19 | |
45548321 CA |
20 | 2) Try it out. Play around (as an ordinary user) with |
21 | '/usr/lib/systemd/systemd --test --system' for a test run | |
22 | of systemd without booting. This will read the unit files and | |
23 | print the initial transaction it would execute during boot-up. | |
24 | This will also inform you about ordering loops and suchlike | |
eb10a764 | 25 | |
2ed3de9c LP |
26 | NTP POOL: |
27 | ||
28 | By default, timesyncd uses the Google NTP servers | |
29 | time[1-4].google.com. They serve time that is not standards | |
30 | compliant, and can be up to .5s off. Google does not | |
31 | officially support these servers for the broader | |
32 | audience. Distributions and vendors really should not ship | |
33 | OSes or devices with these NTP servers configured. Instead, | |
34 | please register your own vendor pool at ntp.org and make it | |
35 | the built-in default by passing --with-ntp-servers= to | |
36 | configure. Registering vendor pools is free: | |
37 | ||
38 | http://www.pool.ntp.org/en/vendors.html | |
39 | ||
40 | Again, if you ship your software or device with the default | |
41 | NTP servers, then you will get served wrong time, and will | |
42 | rely on services that might not be supported for long. | |
43 | ||
baed1fed FS |
44 | PAM: |
45 | The default PAM config shipped by systemd is really bare bones. | |
46 | It does not include many modules your distro might want to enable | |
47 | to provide a more seamless experience. For example, limits set in | |
48 | /etc/security/limits.conf will not be read unless you load pam_limits. | |
49 | Make sure you add modules your distro expects from user services. | |
50 | ||
651742d8 FS |
51 | Pass --with-pamconfdir=no to ./configure to avoid installing this file |
52 | and instead install your own. | |
53 | ||
eb10a764 | 54 | CONTRIBUTING UPSTREAM: |
eb10a764 | 55 | |
45548321 | 56 | We generally do no longer accept distribution-specific |
bc270841 | 57 | patches to systemd upstream. If you have to make changes to |
45548321 | 58 | systemd's source code to make it work on your distribution, |
19aadacf | 59 | unless your code is generic enough to be generally useful, we |
bc270841 | 60 | are unlikely to merge it. Please always consider adopting the |
19aadacf JE |
61 | upstream defaults. If that is not possible, please maintain |
62 | the relevant patches downstream. | |
1486dbe1 | 63 | |
bc270841 | 64 | Thank you for understanding. |