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On Mon, 2006-27-11 at 18:15 -0800, Mark Knecht wrote: |
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> On 11/27/06, Harm Geerts <harmgeerts@××××.nl> wrote: |
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> > On Tuesday 28 November 2006 02:33, Mark Knecht wrote: |
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> <SNIP> |
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> > > |
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> > > [ebuild R ] media-video/mplayer-1.0_pre8 USE="3dnow* 3dnowext* X |
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> > > alsa dvd dvdread encode gif gtk i8x0 ipv6 jack jpeg (mmx*) mmxext* |
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> > > opengl png sdl (sse*) (sse2*) truetype unicode v4l v4l2 vorbis xv xvid |
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> > > (-3dfx) -aac -aalib (-altivec) -arts -bidi -bindist -bl -cdparanoia |
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> > > -cpudetection -custom-cflags -debug -dga -directfb -doc -dts -dv -dvb |
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> > > -esd -fbcon -ggi -joystick -libcaca -lirc -live -livecd -lzo -mad |
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> > > -matrox -musepack -nas -nvidia -openal -oss (-real) -rtc -samba -speex |
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> > > (-svga) -tga -theora (-win32codecs) -x264 -xanim -xinerama -xvmc |
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> > > (-xmms%)" LINGUAS="-bg -cs -da -de -el -en -es -fr -hu -ja -ko -mk -nl |
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> > > -no -pl -pt_BR -ro -ru -sk -tr -uk -zh_CN -zh_TW" 220 kB |
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> > |
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> > This is normal, they changed the way these flags are handled because not all |
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> > 64bit cpu's support the same instructions. As you can see in the mplayer |
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> > package, mmx,sse and sse2 are still masked because they supported on all |
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> > 64bit cpu's. Those are always enabled ! |
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> > |
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> > The remaining flags you can set if your cpu supports them. |
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> > $ grep flags /proc/cpuinfo |
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> |
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> Thanks Harm. I'll look into it. |
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> |
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> Are you suggesting that ALL flags can now be enabled if the processor |
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> supports the flag? That would be nice and similar to the way I've |
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> worked with my 32-bit boxes. |
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Yes, it will work like x86. |
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> It seemed to me that 18 months ago when I built this machine all these |
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> flags were turned off since they caused problems with most packages. I |
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> guess that is getting fixed now so that's cool. Great to see some |
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> progress in this area. |
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Originally amd64 was only Opterons and we couldn't predict what would |
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not be present on all cpus.. But now that we have Intel cpus with |
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different extentions (sse3 but no 3dnow) we can do the same thing as |
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x86. |
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|
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-- |
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Olivier Crête |
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tester@g.o |
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Gentoo Developer |
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