http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51059
--- Comment #13 from Iain Sandoe <iains at gcc dot gnu.org> 2011-12-03 18:36:07 UTC --- (In reply to comment #12) > This still fails on darwin11 under Xcode 4.2.1 as.... > > Executing on host: /sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/gcc/xgcc > -B/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/gcc/ > /sw/src/fink.build/gcc47-4.7.0-1/gcc-4.7-20111202/gcc/testsuite/gcc.misc-tests/gcov-14.c > -O2 -fprofile-arcs -ftest-coverage -flat_namespace -undefined suppress > -lm > -m32 -o ./gcov-14.exe (timeout = 300) > PASS: gcc.misc-tests/gcov-14.c (test for excess errors) > Setting LD_LIBRARY_PATH to > :/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/gcc::/sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/gcc > dyld: Symbol not found: _Foo > Referenced from: > /sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/gcc/testsuite/gcc/./gcov-14.exe > Expected in: flat namespace > in > /sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/gcc/testsuite/gcc/./gcov-14.exe > FAIL: gcc.misc-tests/gcov-14.c execution test > Executing on host: /sw/src/fink.build/gcc47-4.7.0-1/darwin_objdir/gcc/gcov -a > gcov-14.c (timeout = 300) > gcov-14.gcda:cannot open data file, assuming not executed^M > File > '/sw/src/fink.build/gcc47-4.7.0-1/gcc-4.7-20111202/gcc/testsuite/gcc.misc-tests/gcov-14.c'^M > No executable lines^M > ^M > FAIL: gcc.misc-tests/gcov-14.c gcov failed: gcov-14.c.gcov does not exist I guess it's not supporting "-undefined suppress" ... _Foo is not meant to be found at link time. (that is the intention of adding -flat_namespace -undefined suppress). I suppose you could try adding -Wl,-U,_Foo instead ...
