Gentoo Archives: gentoo-dev

From: Chris White <chriswhite@g.o>
To: gentoo-dev@××××××××××××.org
Subject: [gentoo-dev] MPlayer cpu USE flags zaniness
Date: Sun, 27 Mar 2005 04:21:03
1 My God.. I love this part:
3 Ok, so I had some users complain about mmx2 being showed as enabled
4 in mplayer despite the lack of mmxext in /proc/cpuinfo. Therefore I
5 decided to get upstream help. Here's what we got...:
7 mmx2 = sse
8 sse = mmx2
10 but in mplayer's configure script:
12 mmx2 = sse's integer logic
13 sse = sse's floating point stuff
15 so mmx2 is NOT a flag for mmx2 support.. it's a flag for integer portion
16 of sse...
18 ok, so at this point I'm confused as to how to approach this. What
19 about AMD? Do they use mmxext for stuff like that.. or sse2 extensions
20 (as someone mentioned). My plan is to have sse USE flag enable mmx2
21 only (since it's "the best") and disable sse (since it's the same thing
22 but "worse"). However, that only takes care of intel.. what about AMD
23 processors though? They deal with all this stuff differently.
24 Recomendations are welcome at this point.. I'm going to get some asprin...
26 --
27 Chris White <chriswhite@g.o>
28 ------------------------
29 Sound | Video | PPC
30 ChrisWhite @
31 cpw @


File name MIME type
signature.asc application/pgp-signature


Subject Author
Re: [gentoo-dev] MPlayer cpu USE flags zaniness Markus Nigbur <pYrania@g.o>
Re: [gentoo-dev] MPlayer cpu USE flags zaniness Michael Marineau <marineam@g.o>
Re: [gentoo-dev] MPlayer cpu USE flags zaniness Ciaran McCreesh <ciaranm@g.o>
Re: [gentoo-dev] MPlayer cpu USE flags zaniness David Holm <dholm@g.o>
Re: [gentoo-dev] MPlayer cpu USE flags zaniness Francesco Riosa <francesco@×××××××××.it>