http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51906
--- Comment #48 from Jack Howarth <howarth at nitro dot med.uc.edu> 2012-02-03 17:45:21 UTC --- (In reply to comment #46) Actually, using -mmacosx-version-min=10.6 --sysroot=/Developer/SDKs/MacOSX10.6.sdk doesn't work as you end up with the error... /sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/./gcc/g++ -shared-libgcc -B/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/./gcc -nostdinc++ -L/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/libstdc++-v3/src -L/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/libstdc++-v3/src/.libs -B/sw/lib/gcc4.7/x86_64-apple-darwin11.3.0/bin/ -B/sw/lib/gcc4.7/x86_64-apple-darwin11.3.0/lib/ -isystem /sw/lib/gcc4.7/x86_64-apple-darwin11.3.0/include -isystem /sw/lib/gcc4.7/x86_64-apple-darwin11.3.0/sys-include -B/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/./libstdc++-v3/src/.libs -g -O2 -D_GLIBCXX_ASSERT -fmessage-length=0 -ffunction-sections -fdata-sections -g -O2 -g -O2 -DLOCALEDIR="." -nostdinc++ -I/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/libstdc++-v3/include/x86_64-apple-darwin11.3.0 -I/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/libstdc++-v3/include -I/sw/src/fink.build/gcc47-4.7.0-1/gcc-4.7-20120203/libstdc++-v3/libsupc++ -I/sw/src/fink.build/gcc47-4.7.0-1/gcc-4.7-20120203/libstdc++-v3/include/backward -I/sw/src/fink.build/gcc47-4.7.0-1/gcc-4.7-20120203/libstdc++-v3/testsuite/util /sw/src/fink.build/gcc47-4.7.0-1/gcc-4.7-20120203/libstdc++-v3/testsuite/30_threads/mutex/try_lock/1.cc -std=gnu++0x ./libtestc++.a -L/sw/lib -liconv -lm -m64 -o ./1.exe -mmacosx-version-min=10.6 --sysroot=/Developer/SDKs/MacOSX10.6.sdk In file included from /sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/libstdc++-v3/include/system_error:39:0, from /sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/libstdc++-v3/include/mutex:44, from /sw/src/fink.build/gcc47-4.7.0-1/gcc-4.7-20120203/libstdc++-v3/testsuite/30_threads/mutex/try_lock/1.cc:26: /sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/libstdc++-v3/include/x86_64-apple-darwin11.3.0/bits/error_constants.h:135:24: error: ‘EOWNERDEAD’ was not declared in this scope /sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/x86_64-apple-darwin11.3.0/libstdc++-v3/include/x86_64-apple-darwin11.3.0/bits/error_constants.h:151:34: error: ‘ENOTRECOVERABLE’ was not declared in this scope