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

[Jonathan Wakely]

On Sat, 16 Jun 2018 at 02:04, Sandra Loosemore <sandra@codesourcery.com>
wrote:

> 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.
>
>

I'm not the only person able to make changes to autoconf files (and already
said I didn't know how to fix this).

I have a patch to replace the AC_CHECK_FUNCS line with
GLIBCXX_COMPILE_OR_LINK tests inside GLIBCXX_CHECK_FILESYSTEM_DEPS which
should work, I'll finish testing it when I get home this evening.




> -Sandra
>