https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86004
--- Comment #2 from seurer at gcc dot gnu.org --- Sorry about that. The actual complaints are about a missing plugin from the loader. I've never seen anything like that before. gcc/testsuite/gfortran/gfortran.log:/usr/bin/ld: /tmp/ccxyE8Zx.lto.o: plugin needed to handle lto object seurer@genoa:~/gcc/build/gcc-trunk$ ld --version GNU ld (GNU Binutils for Ubuntu) 2.26.1 I don't see this problem on a newer system that has binutils version 2.30 on it so this is probably a problem with binutils.