https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67710
--- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> --- The patch LGTM, tools (ar, nm etc, as well as the assembler) <= xcode 3.2.6 [darwin10] do not support the LC_VERSION_MIN_MACOSX load command, so we can't just set it as default. I'll give it a spin on darwin9 or 10 over the w/e where the tools have the earlier version. (and also with my back-ported cctools/ld64)