[Bug libgcc/121718] [16 Regression] _Decimal128 now requires -lm, fails to link gdb (mpfr is underlinked against fesetenv()) since r16-3448-g50064b2898edfb

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121718

--- Comment #5 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
Let's revert it first