On Mon, 13 Dec 2010 18:41:07 -0600
Ryan Hill <[email protected]> wrote:
> Absolutely, -march=native should be used if you aren't using distcc.
> This is about setting CPU-based USE flags (mmx, sse, etc.).
Exactly, or x86 CPU extensions based USE flags, more exactly.
It seems the thread has been somewhat hijacked in favour of automating
setting USE flags or at least helping to set them based on information
found here and there on the system that happens to be queried for it,
something we have never supported since the thankfully forgotten days of
<profiles/base/use.defaults>. And rather than trusting gcc
-march=native to do the work for you, you would probably be better off
checking `grep ^flags /proc/cpuinfo' anyway. :)
jer
