[Bug ada/81878] --disable-bootstrap --enable-languages=ada fails

[tnfchris at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81878

--- Comment #33 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
> Do you know whether it would be possible to force the conversion by applying some trick to GCC_LINK in ada/gcc-interface/Makefile.in?

Yeah usually, cygpath -w would convert a path, seems we alias that to
`fix_srcfile_path` in the gcc build system and use that often. I don't think
that works in this case because the string contains more than just a path.

But I think I may have a workaround, I'll give it a try tonight once I'm back
at the Windows machine.