http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56068
--- Comment #11 from Jason Pyeron <jpyeron at pdinc dot us> 2013-01-21 17:42:06 UTC --- (In reply to comment #10) > (In reply to comment #9) > > Using -mno-avx (or replacing -march=cirei7) worked for me. > Bah, that should be "replacing -march=native with -march=corei7" > My problem was with GCC 4.6, and the avx-detection code is the same in current > releases, so if your illegal instruction is an AVX one then I doubt trying a > newer GCC will help. The problem is in glibc's __cpuid() function not GCC. I will try 4.6 to prove that. Off to build 4.6...