[Bug bootstrap/104057] cross compiler multilibs libs path too chaos

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104057

--- Comment #17 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
also multilib directories under ${prefix} for a cross does not use OS
directories as most cross compilers have OS directories.