RE: [gentoo-user] USE="mmx mmxext sse sse2 ssse3 3dnow 3dnowext"

[Adam Carter]

'grep flags /proc/cpuinfo' to see what features the CPU supports, and add those 
to USE. You'll recognise most but apparently "pni" = sse3 (but then my core2 
also shows ssse3 as well....odd)