[Bug libstdc++/56332] New: libstdc++-v3 does not support x86_64-pc-mingw64: No support for this host/target combination

[devurandom at gmx dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56332

             Bug #: 56332
           Summary: libstdc++-v3 does not support x86_64-pc-mingw64: No
                    support for this host/target combination
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: devurandom@gmx.net


Created attachment 29458
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29458
gcc-4.7.2-libstdc++-v3-crossconfig-support-mingw64.patch

When trying to configure libstdc++-v3 for a x86_64-pc-mingw64 crosscompiler (on
a x86_64-pc-linux-gnu system), I get an error: "No support for this host/target
combination"

Attached patches fix that by adjusting configure to accept mingw64 as an
alternative to mingw32.