https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52268
--- Comment #9 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to Jeremy Huddleston Sequoia from comment #8) > Seems to work to me in gcc-4.6: TLS _is_ supported on Darwin by means of emutls (emulation using pthreads interfaces). This enhancement request is for native TLS support, which would be more efficient.