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

[vital.had at gmail dot com via Gcc-bugs]

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

--- Comment #8 from Sergey Fedorov <vital.had at gmail dot com> ---
(In reply to Eli Schwartz from comment #5)
> Not a meson bug, but gegl should probably test whether -ObjC is accepted as
> a valid flag before unconditionally adding it to their build.

I have opened an issue there: https://gitlab.gnome.org/GNOME/gegl/-/issues/393