http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54847
--- Comment #16 from Jeremy Huddleston Sequoia <jeremyhu at macports dot org> 2012-10-07 23:07:04 UTC --- (In reply to comment #15) > Note that the autoconf test is built by the C++ compiler, thus there is no > real > difference between timespec and struct timespec. Except that one is POSIX and one is not. Additionally, you shouldn't assume that g++ is being used. Hopefully, libstdc++ would be portable enough that one wouldn't need to bootstrap g++ to build it.