Gentoo Archives: gentoo-user-cs

From: "Jan Kundrát" <jan.kundrat@×××.cz>
To: gentoo-user-cs@l.g.o
Subject: Re: [gentoo-user-cs] Use flagy, kompilace mplayeru a par dalsich drobnosti
Date: Mon, 11 Apr 2005 11:00:30
Message-Id: 425A58D1.2040805@fzu.cz
In Reply to: Re: [gentoo-user-cs] Use flagy, kompilace mplayeru a par dalsich drobnosti by Jan Oppolzer
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 -- gentoo-user-cs@g.o mailing list