On Dienstag 26 Mai 2009, Stroller wrote: > On 26 May 2009, at 06:10, Volker Armin Hemmann wrote: > >> ... > >> The mplayer ebuild is stated to be "intelligent" about ignoring these > >> flags if necessary, so I'm not sure that "if mplayer works, so will > >> everything else" is a safe conclusion. My question was exactly if it > >> was so - are other ebuilds also as "intelligent" as mplayer? > >> > >> ... > >> I'd disagree. If it were really simple, Portage would take care of it > >> automagically for me. It (apparently?) doesn't. > > > > portage does not take care. mplayers build has a cpu feature > > autodection. > > > > Different stuff. Really. > > Right, that was the question. Thank you for answering it. Sorry if I > was unclear. > > >> Looks like `echo media-video/mplayer mmx mmxext sse sse2 ssse3 3dnow > >> 3dnowext >> /etc/portage/package.use` unless someone else is able to > >> be more informative. > > > > yeah, except that is bullshit > > So? It doesn't matter. Uh, I mean - that's what you just told me.
see a bit below > > > no pentium can do 3dnow. > > I did think that. But with other instructions adopted by the other > manufacturer (eg. Intel adopted the amd64 architecture, I think?) it > seemed odd that a set of instructions would be ignored so long. because 3dnow is/was very unimportant for intel- but Intel couldn't compete without AMD64. So they had to licence it. 3dnow and SSE have a lot of commands in common/similar commands anyway so it doesn't really matter from Intels POV. The thing is - autodetection is a useflag too - and you are trusting a feature that might break any time. Better to know what your cpu can and can't do and set it by yourself. Also there are a lot more packages that do benefit from mmx, 3dnow, sse... > > > Or was there a 3dnow flag in /proc/mtrr? No? Then > > don't even touch it. Same for ssse3. This has nothing to do with > > sse3. It is > > something completly different. And p4 never had this. > > That's cool. I'll just keep minimal hardware USE flags in make.conf; > in /etc/portage/package.use I'll tell mplayer to USE everything > (including 3dnow) that it can. sorry that I was harsh. I shouldn't have been awake when I wrote the mail - freaking heat...
