https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61407
--- Comment #35 from Lawrence Velázquez <larryv at macports dot org> --- Created attachment 33461 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33461&action=edit MacPorts log from a failed attempt to build libgcc @4.9.1_0 (x86_64) There’s a lot of text, I know. To see the environment and commands executed, search for "configure phase started" and "build phase started". As you might expect, the failure is near the end.