I believe the way mtune and march is like this: Think of mtune as 'optional' tuning and march as 'required' tuning, meaning: compile for athlon-xp with the mtune option, it will run better on an athlon xp but will also run in i386 (just slower), whereas march will compile for athlon-xp and will only run on athlon-xp.
On 6/13/05, Volker Armin Hemmann <[EMAIL PROTECTED]> wrote: > On Monday 13 June 2005 21:53, Allan Spagnol Comar wrote: > > I was looking over the internet for some CFLAGS for athlon XP and I > > didn't found any. Does someone knows what are the best C and CXXFLASG > > for athlon XP ? > > march=athlon-xp > -mmmx > -msse > -O2 > -fomit-frame-pointer > -pipe > > > why mmx and sse? > because, when the 'march' is filtered ands replaced by an 'mtune' there would > not be any mmx/3dnow opts, right? > -- > gentoo-user@gentoo.org mailing list > > -- - Mark Shields -- gentoo-user@gentoo.org mailing list
