[Bug driver/89066] After creating valid paths, the \ in source directory are / which creates "No such file or directory"

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89066

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>Built by MinGW-W64 project

Can you make sure you downloaded all of the correct binaries.