http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53113
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-02-21 21:22:48 UTC --- That is a user error, just don't do that. As the user provided CFLAGS/CXXFLAGS override the default flags, you really shouldn't be using -mno-this and -mno-that when building gcc, because that will disable what is required to compile gcc successfully. If you want to build gcc to support some CPU that doesn't have AVX etc., just configure it for such a CPU.