[Bug libobjc/48626] --enable-objc-gc should be automatic

[doko at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48626

--- Comment #11 from Matthias Klose <doko at gcc dot gnu.org> ---
> Note libobjc is not used by many folks even
> the GNUStep folks don't use it any more ...

that's wrong, looking at least at GNUstep base 1.29.