http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54847
--- Comment #17 from Rob Lu <roblu2184 at gmail dot com> 2012-10-07 23:13:59 UTC --- Created attachment 28382 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28382 libstdc++-acinclude-timespec.patch How about this as an option?