Ismail Donmez <ismail <at> pardus.org.tr> writes: > -O4 will just overwrite the -O2 here unless you hacked configure script not to > use -O4 by default. No, -O2 will overwrite -O4: man gcc ... If you use multiple -O options, with or without level numbers, the last such option is the one that is effective. Carl Eugen