https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64572
--- Comment #11 from howarth at bromo dot med.uc.edu --- (In reply to Dominique d'Humieres from comment #8) I can confirm these now. Executing 'make -k check' in /sw/src/fink.build/gcc50-5.0.0-1000/darwin_objdir/x86_64-apple-darwin14.1.0/i386/libffi doesn't cause -m32 to be passed to the test suite but 'make -k check RUNTESTFLAGS="--target_board=unix'{-m32}'"' does.