hi, why is it necessary (if its at all) to have this: -mfpmath=387 -mno-sse -mno-sse2 -mno-mmx -mno-3dnow in default CFLAGS for amd64 architecture? does it serve anypurpose? sse is used in amd64 code so I dont see why we disables gcc to use it.. thnx for answer roman