Hi,

A recent Win10 build has made enabling Win32 long paths available however you
need manifested win32 application to access paths beyond the normal 260 
characters.

I hit the path limit building a gcc cross compiler for RTEMS in MSYS2 and being
able to build without path limits would be a welcome feature. If a build is
started too deep on a disk parts of the C++ library end up being beyond the 260
character level and not found by the xgcc cross-compiler. The xgcc executable is
the compiler built by MSYS2's mingw64 gcc as part of the gcc build process.

A manifested win32 application seems to need an link time process with a
suitable resources file so it is not clear to me how MSYS2 would manage this or
how it is inherited into applications built by a ming64 gcc, ie xgcc above.

Chris

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