[Bug libstdc++/115122] Incorrect detection of C99 support when cross back builds

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115122

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Build|                            |x86_64-linux-gnu
            Summary|Incorrect detection of C99  |Incorrect detection of C99
                   |support when                |support when cross back
                   |cross-compiling             |builds
               Host|                            |x86_64-w64-mingw32

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
When I do cross back builds, I normally don't rebuild the target libraries and
just use the already built target libraries from the cross builds. Since you
are now building the target libraries twice and you really don't need to
though.