http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45483
--- Comment #11 from Pacho Ramos <pacho at condmat1 dot ciencias.uniovi.es> 2011-09-22 22:39:58 UTC --- If I use "mtune=native" instead of "march", final gcc command is different: /usr/libexec/gcc/i686-pc-linux-gnu/4.6.1/cc1 -quiet - -D_FORTIFY_SOURCE=2 --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=2048 -mtune=generic -quiet -dumpbase - -march=i686 -auxbase-strip /dev/null -o /tmp/ccs2Uhin.s Not sure if that is normal
