https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104057
--- Comment #19 from cqwrteur <unlvsur at live dot com> ---
(In reply to cqwrteur from comment #18)
> (In reply to Andrew Pinski from comment #17)
> > also multilib directories under ${prefix} for a cross does not use OS
> > directories as most cross compilers have OS directories.
>
> Of course. I installed Linux kernel headers and glibc.
>
> they are installed in $PREFIX/$TARGET
>
> Since we need to build 32 glibc, x32 glibc, 64 glibc. I installed them into
> separate dirs and copy files with each other. Or they will overwrite file.
>
> Then copy all headers to $PREFIX/$TARGET/include
>
> glibc32/lib to $PREFIX/lib32 $PREFIX/lib/32
>
> glibc64/lib to $PREFIX/lib64 $PREFIX/lib
>
> glibcx32/lib to $PREFIX/libx32 $PREFIX/lib/x32
https://pete.akeo.ie/2010/07/compiling-mingw-w64-with-multilib-on.html
Here was a similar result other people built 10 years ago. I find this issue
happens for all targets, not just x86_64-w64-mingw32. The GCC just find
different directories at build stage and after build.
