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List Archive: gentoo-user-cs
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To: gentoo-user-cs@g.o
From: Jan Kundrát <jan.kundrat@...>
Subject: Re: Use flagy, kompilace mplayeru a par dalsich drobnosti
Date: Mon, 11 Apr 2005 13:00:33 +0200
Jan Oppolzer wrote:
> On Apr 11, 2005 12:55 AM, Andrej Kacian <ticho@g.o> wrote:
> 
>>>1)gflag -march=athlon-xp zapina 3dnow/mmx/sse?? nebo musim navic
>>>dopisovat "-m3dnow -mmmx -msse"?
>>
>>-m3dnow a -mmmx mozes vynechat, -msse musis explicitne doplnit
> 
> 
> Takze toto je tedy nesmysl? -- As we've pointed out, -march=athlon-xp
> enables mmx, sse, and 3dnow, so there is no point in specifing -mmmx
> -msse and -m3dnow. [1]
> 
> 1. http://forums.gentoo.org/viewtopic.php?p=275851
> 

Jak pravi `man gcc` ohledne -mfpmath=sse:

"For i387 you need to use -march=cpu-type, -msse or -msse2
switches to enable SSE extensions and make this option effec-
tive.  For x86-64 compiler, these extensions are enabled by
default."

Z prvni vety to vypada, ze -march s vhodnym parametrem zaridi -msse,
event. i -msse2.

-jkt

-- 
cd /local/pub && more beer > /dev/mouth
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gentoo-user-cs@g.o mailing list

References:
Use flagy, kompilace mplayeru a par dalsich drobnosti
-- Tomas Synek
Re: Use flagy, kompilace mplayeru a par dalsich drobnosti
-- Andrej Kacian
Re: Use flagy, kompilace mplayeru a par dalsich drobnosti
-- Jan Oppolzer
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Updated Jun 17, 2009

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