[PATCH v2 1/3] Make libstdc++ testsuite work with pre-color GCC versions again

[Jonathan Wakely]

On 10/07/14 22:48 -0400, Samuel Bronson wrote:
>
>When I try to build & test just libstdc++, or to run the testsuite
>from trunk against my installed libstdc++, the testsuite tries to pass
>"-fdiagnostics-color=never" to the system GCC, which is too old to
>know what that is.
>
>Since I really just want to test a patch for the gdb pretty-printers,
>and since evidently my machine is too puny to actually build GCC, this
>is a bit problematic.
>
>According to the documentation, setting GCC_COLORS to "" in the
>environment should be just as effective, while it clearly can't cause
>older GCCs to freak out, so that's just what I've done.
>
>(I've also taken the liberty of swapping the "set ccflags" and "set
>cxxflags" lines here so that ccflags doesn't end up with two
>"-DLOCALEDIR" flags.)
>
>libstdc++-v3/
>
>	* testsuite/lib/libstdc++.exp (libstdc++_init): Set $GCC_COLORS=""
>          instead of insisting that GCC understand -fdiagnostics-color=never

Committed to trunk - thanks.