[Bug objc/117478] -ObjC is not accepted: error: argument to '-O' should be a non-negative integer, 'g', 's', 'z' or 'fast'

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117478

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
-xobjective-c should work fine with both gcc and clang and is much better
designed, it isn't about two almost dead languages, but allows specifying any
language the compiler supports.