9c869d08d82c73f62ab3527567858ce4b0cf1257
Using _GNU_SOURCE is better because that's how we include the headers in the actual build, and some headers define different stuff when it is defined. sys/stat.h for example defines 'struct statx' conditionally.
systemd - System and Service Manager
Details
General information about systemd can be found in the systemd Wiki.
Information about build requirements are provided in the README file.
Consult our NEWS file for information about what's new in the most recent systemd versions.
Please see the HACKING file for information how to hack on systemd and test your modifications.
Please see our Contribution Guidelines for more information about filing GitHub Issues and posting GitHub Pull Requests.
When preparing patches for systemd, please follow our Coding Style Guidelines.
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Stable branches with backported patches are available in the stable repo.
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