To: gene.heskett@verizon.net
Cc: linux-kernel@vger.kernel.org
Subject: Re: Stupid question
References: <200411212045.51606.gene.heskett@verizon.net>
	<41A1F881.1000900@draigBrady.com>
	<200411221058.22276.gene.heskett@verizon.net>
From: Nix <nix@esperi.org.uk>
Date: Tue, 23 Nov 2004 12:08:00 +0000
In-Reply-To: <200411221058.22276.gene.heskett@verizon.net> (Gene Heskett's
 message of "23 Nov 2004 04:46:46 -0000")
Message-ID: <87653wydi7.fsf@amaterasu.srvr.nix>
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On 23 Nov 2004, Gene Heskett yowled:
> On Monday 22 November 2004 09:32, P@draigBrady.com 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.)

-- 
`The sword we forged has turned upon us
 Only now, at the end of all things do we see
 The lamp-bearer dies; only the lamp burns on.'
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