On Sat, Sep 24, 2005 at 11:10:35PM +0100, Jonathan Wright wrote > however since that version -mcpu has been depreciated in favor for -mtune.
I use -march, so that point is moot. > As for the mmx information, that's valid across all gcc versions. If > you specify -march=pentium4 and -mcpu=pentium4 as part of your > CFLAGS, -mmmx and -msse, etc., will be implied by the compiler, > and any programs built to take advantage of the extensions will be > able to do so. The docs for 3.4.X are a lot more detailed than 3.3.X docs. 3.3.6 docs say that -march implies -mcpu but don't say in so many words that certain values of -march imply -sse, etc. While we're talking about compilers and sparse documentation, I've got an AMD64 K8. The docs for an AMD64-bit install scared me off to 32-bit land. Later I found out that the 64-bit install docs are out-of-date and the problems they mention seem to have been solved. However, since I have things humming along, I don't really want to tear my install down and rebuild from scratch. One question... I'm running > CFLAGS="-O2 -pipe -fomit-frame-pointer -march=athlon -m3dnow -mmmx -msse > -msse2 -mfpmath=sse" Is there a way to figure out if I can use a higher version of Athlon in my CFLAGS line in 32-bit mode? -- Walter Dnes <[EMAIL PROTECTED]> My musings on technology and security at http://tech_sec.blog.ca -- gentoo-user@gentoo.org mailing list
