On Tue, 13 May 2003, henry nelson wrote:

> I'd really like to try something like "submodel optimization" of kernels
> for some of my older hardware.  How do you pass flags like "-O3 -march=k6-2"
> to the compiler, and how would I know what value is right for what machine?
> Haven't any idea what docs I should be looking for.  TIA!

	devel/cpuflags should tell you the best architecture flags for
	your CPU. Look at the cpuflags.mk it installs to work out how
	best to add -O3 without breaking any other flag settings :)

-- 
		David/absolute          -- www.netbsd.org: No hype required --