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Hi all, |
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bugs like [1] makes clear to me that the increasing number of CPU |
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extensions USE flags is getting more and more confusing. |
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ffmpeg-0.6_p25767.ebuild : IUSE="+3dnow +3dnowext alsa altivec amr |
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bindist +bzip2 cpudetection custom-cflags debug dirac doc +encode faac |
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frei0r gsm +hardcoded-tables ieee1394 jack jpeg2k +mmx +mmxext mp3 |
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network oss pic qt-faststart rtmp schroedinger sdl speex +ssse3 |
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static-libs test theora threads v4l v4l2 vaapi vdpau vorbis vpx X x264 |
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xvid +zlib video_cards_nvidia" |
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|
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(I am not going to argue here that USE defaults shouldn't be used for |
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CPU extensions.) |
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Among all CPU extensions USE flags you'll find: |
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3dnow |
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3dnowext |
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mmx |
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mmxext |
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sse |
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sse2 |
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sse3 |
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sse4 |
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sse4a |
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sse5 |
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ssse3 |
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I probably missed a few, there. |
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I think it would look a lot less confusing if, using the example above, |
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the output of emerge would not look like this: |
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[ebuild N ] media-video/ffmpeg-0.6_p25767 USE="3dnow 3dnowext |
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bzip2 encode hardcoded-tables mmx mmxext ssse3 zlib -X -alsa (-altivec) |
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-amr -bindist -cpudetection -custom-cflags -debug -dirac -doc -faac |
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-frei0r -gsm -ieee1394 -jack -jpeg2k -mp3 -network -oss -pic |
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-qt-faststart -rtmp -schroedinger -sdl -speex -static-libs -test |
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-theora -threads -v4l -v4l2 -vaapi -vdpau -vorbis -vpx -x264 -xvid" |
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VIDEO_CARDS="-nvidia" 0 kB |
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but more like this: |
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[ebuild N ] media-video/ffmpeg-0.6_p25767 USE="bzip2 encode |
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hardcoded-tables zlib -X -alsa (-altivec) -amr -bindist -cpudetection |
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-custom-cflags -debug -dirac -doc -faac -frei0r -gsm -ieee1394 -jack |
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-jpeg2k -mp3 -network -oss -pic -qt-faststart -rtmp -schroedinger -sdl |
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-speex -static-libs -test -theora -threads -v4l -v4l2 -vaapi -vdpau |
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-vorbis -vpx -x264 -xvid" VIDEO_CARDS="-nvidia" CPU_EXTS="3dnow |
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3dnowext mmx mmxext ssse3" 0 kB |
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jer |
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[1] https://bugs.gentoo.org/show_bug.cgi?id=340539 |
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"media-video/ffmpeg-0.6_p25423 - libswscale/swscale.c:1269: error: |
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implicit declaration of function 'sws_init_swScale_*'" |
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