https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63312
--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> --- Created attachment 33519 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33519&action=edit Untested patch Please try this patch. As I noted in my patch posting, the issue is that there is no ia64 definition of FP_TRAPPING_EXCEPTIONS.