[PATCH] PR libstdc++/78870 support std::filesystem on Windows

[Sandra Loosemore]

On 05/31/2018 01:19 PM, Jonathan Wakely wrote:
> This adds incomplete but functional support for std::filesystem and
> std::experimental::filesystem on MinGW. In theory there should be no
> changes to the existing behaviour for POSIX targets from this patch,
> as all the various bugs I found while working on this have already
> been fixed in separate patches.
> 
> Tested powerpc64le-linux, and x86_64-w64-mingw32 (with a few expected
> FAILures on mingw-w64). Committed to trunk.

As noted in the issue (comment #16) 2 weeks ago already, this patch 
breaks libstdc++ configure on bare-metal targets.

configure:80055: checking for link
configure:80055: error: Link tests are not allowed after GCC_NO_EXECUTABLES.

Please fix?  It's blocking other people from testing unrelated patches 
on mainline.

-Sandra