Re: [gentoo-user] Cannot reinstall ffmpeg since new cpu flags

[Alexander Kapshuk <alexander.kapshuk@gmail.com>]

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On Sun, Feb 1, 2015 at 8:44 PM, Matthias Hanft <mh@hanft.de> wrote:

> Hi,
>
> I have installed the new CPU_FLAGS_X86, as "cpuinfo2cpuflags-x86"
> told me: CPU_FLAGS_X86="mmx mmxext sse sse2 sse3"
>
> When I did "emerge -NDuv @world" afterwards, there were some re-installs.
> Everything was fine, except ffmpeg. emerge displays:
>
> [ebuild   R    ] media-video/ffmpeg-1.2.6-r1  USE="bzip2 encode examples
> fontconfig gnutls hardcoded-tables iconv libcaca mp3 network truetype
> vorbis x264 xvid zlib -X -aac -aacplus -alsa (-altivec)
> -amr -bindist -bluray -cdio (-celt) -cpudetection -debug -doc -faac -fdk
> -flite -frei0r -gsm -iec61883 -ieee1394 -jack -jpeg2k -libass -libsoxr
> -libv4l -modplug (-neon) -openal -openssl -opus -oss
> -pic -pulseaudio -rtmp -schroedinger -sdl -speex -static-libs {-test}
> -theora -threads -twolame -v4l -vaapi -vdpau (-vis) -vpx (-3dnow%)
> (-3dnowext%) (-avx%) (-mmx%) (-mmxext%) (-ssse3%)"
> CPU_FLAGS_X86="mmx%* mmxext%* -3dnow% -3dnowext% -avx% -ssse3%"
> FFTOOLS="aviocat cws2fws ffescape ffeval fourcc2pixfmt graph2dot ismindex
> pktdumper qt-faststart trasher" 0 KiB
>
> and running emerge, after many lines, I get
>
> [...]
> /var/tmp/portage/media-video/ffmpeg-1.2.6-r1/work/ffmpeg-1.2.6/libavcodec/mpeg12.c:1164:12:
> warning: 'mpeg_decode_update_thread_context' defined but not used
> [-Wunused-function]
>  static int mpeg_decode_update_thread_context(AVCodecContext *avctx, const
> AVCodecContext *avctx_from)
>             ^
> /var/tmp/portage/media-video/ffmpeg-1.2.6-r1/work/ffmpeg-1.2.6/common.mak:48:
> recipe for target 'libavcodec/motion_est.o' failed
> make: *** [libavcodec/motion_est.o] Error 1
> make: *** Waiting for unfinished jobs....
>  * ERROR: media-video/ffmpeg-1.2.6-r1::gentoo failed (compile phase):
>  *   emake failed
>
> Google can't find this special error message (yet?), so I believe I'm
> the only one getting that error (and, hence, didn't want to file a bug
> report instantly). Perhaps I set some weird use flags?
>
> (No graphics installed on that machine, it's just a server which uses
> command-line ffmpeg-converting, mainly sound files, not even videos.)
>
> Thanks,
>
> -Matt
>
>
What's the output of the command lines shown below on your system?

grep -Es 'ffmpeg|CPU' /etc/portage/*

equery -q u media-video/ffmpeg|grep cpu

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