[Bug libgcc/117600] [15 regression] libgcc arm build doesn't respect --disable-werror

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117600

--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
IME, this stuff ends up being a time bomb on unusual configurations and I've
had to sed this out in libatomic before, but I won't argue further.