jhrozek's pull request #6: "Applications should never define _USE_GNU themselves,
but rely on _GNU_SOURCE" was closed
See the full pull-request at
https://github.com/SSSD/sssd/pull/6
... or pull the PR as Git branch:
git remote add ghsssd
https://github.com/SSSD/sssd
git fetch ghsssd pull/6/head:pr6
git checkout pr6