| 1 |
On Dienstag 26 Mai 2009, Stroller wrote: |
| 2 |
> On 26 May 2009, at 06:10, Volker Armin Hemmann wrote: |
| 3 |
> >> ... |
| 4 |
> >> The mplayer ebuild is stated to be "intelligent" about ignoring these |
| 5 |
> >> flags if necessary, so I'm not sure that "if mplayer works, so will |
| 6 |
> >> everything else" is a safe conclusion. My question was exactly if it |
| 7 |
> >> was so - are other ebuilds also as "intelligent" as mplayer? |
| 8 |
> >> |
| 9 |
> >> ... |
| 10 |
> >> I'd disagree. If it were really simple, Portage would take care of it |
| 11 |
> >> automagically for me. It (apparently?) doesn't. |
| 12 |
> > |
| 13 |
> > portage does not take care. mplayers build has a cpu feature |
| 14 |
> > autodection. |
| 15 |
> > |
| 16 |
> > Different stuff. Really. |
| 17 |
> |
| 18 |
> Right, that was the question. Thank you for answering it. Sorry if I |
| 19 |
> was unclear. |
| 20 |
> |
| 21 |
> >> Looks like `echo media-video/mplayer mmx mmxext sse sse2 ssse3 3dnow |
| 22 |
> >> 3dnowext >> /etc/portage/package.use` unless someone else is able to |
| 23 |
> >> be more informative. |
| 24 |
> > |
| 25 |
> > yeah, except that is bullshit |
| 26 |
> |
| 27 |
> So? It doesn't matter. Uh, I mean - that's what you just told me. |
| 28 |
|
| 29 |
|
| 30 |
see a bit below |
| 31 |
|
| 32 |
> |
| 33 |
> > no pentium can do 3dnow. |
| 34 |
> |
| 35 |
> I did think that. But with other instructions adopted by the other |
| 36 |
> manufacturer (eg. Intel adopted the amd64 architecture, I think?) it |
| 37 |
> seemed odd that a set of instructions would be ignored so long. |
| 38 |
|
| 39 |
because 3dnow is/was very unimportant for intel- but Intel couldn't compete |
| 40 |
without AMD64. So they had to licence it. 3dnow and SSE have a lot of commands |
| 41 |
in common/similar commands anyway so it doesn't really matter from Intels POV. |
| 42 |
|
| 43 |
The thing is - autodetection is a useflag too - and you are trusting a feature |
| 44 |
that might break any time. Better to know what your cpu can and can't do and |
| 45 |
set it by yourself. Also there are a lot more packages that do benefit from |
| 46 |
mmx, 3dnow, sse... |
| 47 |
|
| 48 |
> |
| 49 |
> > Or was there a 3dnow flag in /proc/mtrr? No? Then |
| 50 |
> > don't even touch it. Same for ssse3. This has nothing to do with |
| 51 |
> > sse3. It is |
| 52 |
> > something completly different. And p4 never had this. |
| 53 |
> |
| 54 |
> That's cool. I'll just keep minimal hardware USE flags in make.conf; |
| 55 |
> in /etc/portage/package.use I'll tell mplayer to USE everything |
| 56 |
> (including 3dnow) that it can. |
| 57 |
|
| 58 |
sorry that I was harsh. I shouldn't have been awake when I wrote the mail - |
| 59 |
freaking heat... |
Archives