Gentoo
 

HI,


I am installing Gentoo 1.4, but i got a AMD Duron system , so my question is which safe flags do i have to use , i was reading on some pages about ''-march=athlon -O3 -pipe -fomit-frame-pointer", but on a other forum they said use -mcpu= instead of -march=, so i dunno atm :)


greetings,

exodusnumeri

Surely a quick Google could have resolved this for you.

--march: CPU specific optimizations, not backwards compatible with older CPUs

--mcpu: Optimizations that are backwards compatible. i.e. A program compiled with --mcpu athlon should still work on an Pentium 2. Safer but not as optimized.

Don't use both, as I believe march will override it (could be wrong on this). Generally march is fine, unless you plan to downgrade or copy compiled programs onto older computers.