http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54663
--- Comment #1 from Michael Eager <eager at eagercon dot com> 2012-10-23 15:09:18 UTC --- Not able to reproduce. GCC HEAD builds for microblaze without known problem. Not enough info in report to reproduce or identify problem. If there was a problem compiling microblaze-c.o, it would be logged before the ar to create libbackend.a.