Re: Stupid question

[P]

Nix wrote:
> On 23 Nov 2004, Gene Heskett yowled:
>
> > On Monday 22 November 2004 09:32, P@xxxxxxxxxxxxxx wrote:
> >
> > > Gene Heskett wrote:
> > >
> > > > Greetings;
> > > >
> > > > Silly Q of the day probably, but what do I set in a Makefile for
> > > > the -march=option for building on a 233 mhz Pentium 2?
> > >
> > > http://www.pixelbeat.org/scripts/gcccpuopt
> >
> > Thanks very much.  Obviously someone else needed to scratch this itch 
> > too.  This should produce the correct results when running on the 
> > target machine.  Here, it produces this:
> > [root@coyote CIO-DIO96]# sh ../gcccpuopt
> > -march=athlon-xp -mfpmath=sse -msse -mmmx -m3dnow
>
>
> ... which is peculiar, as -mmmx -msse is redundant, as is -mmmx -m3dnow,
> and all three of those flags are the end are implied by -march=athlon-xp
> anyway.
>
> (-mfpmath=sse *is* useful on non-64-bit platforms, though.)

I added those in so that they were explicit.
They do no harm. I had a version that didn't print
these redundant options but got many requests
about whether they were needed. You can't win.

Pádraig.
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