https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63188
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > INIT_SECTION_ASM_OP is meant to be a string constant, not empty. Try > defining it to "". I suppose the cases in libgcc that actually use the > string constant value inside asm, rather than just testing whether it's > defined, don't get used for Darwin? See comment 1.