[Bug libstdc++/84654] libstdc++ tries to use __float128 when compiling with -mno-float128

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84654

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|8.3                         |7.4

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Backported to gcc-7-branch for 7.4