[Bug libstdc++/108326] Question about definitions in c++config.h for gcc13 20221229

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108326

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jamaika from comment #4)
> I tried adding c++config definitions to gcc 11.3.1 with
> _GLIBCXX_HAS_GTHREADS.

What do you mean? The c++config.h file is created by GCC during installation,
you can't edit it, and you can't define (or redefine) those macros.