https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114049
--- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> --- so .. if i follow your discussion correctly - neither clang nor gcc finds it because it's incorrectly quoted (is that an SDK issue?).. or? We do have control, IIRC, about adding the frameworks search path to "system" rather than "user".