K 10
svn:author
V 3
dim
K 8
svn:date
V 27
2013-09-12T21:24:59.397055Z
K 7
svn:log
V 399
After r255321, clang uses libc++ by default.  This leads to a lot of
errors when you enable WITH_GNUCXX to build libstdc++, since it will
include C++ headers from the libc++ installation under ${WORLDTMP}, and
those are not compatible with libstdc++ at all.

To fix this, add -stdlib=libstdc++ to CXXFLAGS when building libstdc++
(and its companion libsupc++) with clang.

Approved by:	re (delphij)

END