https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91349
--- Comment #3 from Alan Modra <amodra at gcc dot gnu.org> --- Author: amodra Date: Mon Aug 5 01:53:31 2019 New Revision: 274106 URL: https://gcc.gnu.org/viewcvs?rev=274106&root=gcc&view=rev Log: PR91349, powerpc64*-*-freebsd* defines _GNU_SOURCE rev 266496 (git ab6b1bb456) undefined some macros in rs6000/freebsd.h but missed doing the same in rs6000/freebsd64.h. PR target/91349 * config/rs6000/freebsd64.h (CPLUSPLUS_CPP_SPEC), (LINK_GCC_C_SEQUENCE_SPEC): Undef. Modified: branches/gcc-9-branch/gcc/ChangeLog branches/gcc-9-branch/gcc/config/rs6000/freebsd64.h