https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58909
--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Unaware of extern directive in gas. I'd think (but it would need to be surrounded by configury checks) that something like: .section .gnu.need.pthread_cond, "e" .8byte pthread_cond_init ... .previous where you'd list all the symbols you want to force in should work though, and wouldn't actually waste .data or .rodata.
