This reverts commit 9c886f20b9.
9c886f20b9
This breaks wlroots when used as a meson subproject. This reverts commit dea311992e, reversing changes made to 6db9c4b746.
dea311992e
6db9c4b746
This is so we can potentially add comments to it, and so if a user looks at the installed header, they can see the /* #undef WLR_HAS_FEATURE */ line to see every option, even if not available.