проблемы с обновлением

у меня проблема при обновлении генту.. каждый раз вылазит одна и та же ошибка
>>> Failed to emerge media-video/ffmpeg-0.5_p20373, Log file:

>>> '/var/tmp/portage/media-video/ffmpeg-0.5_p20373/temp/build.log'

* Messages for package media-video/ffmpeg-0.5_p20373:

* ERROR: media-video/ffmpeg-0.5_p20373 failed:
* make failed
*
* Call stack:
* ebuild.sh, line 54: Called src_compile
* environment, line 2704: Called die
* The specific snippet of code:
* emake || die "make failed"
*
* If you need support, post the output of 'emerge --info =media-video/ffmpeg-0.5_p20373',
* the complete build log and the output of 'emerge -pqv =media-video/ffmpeg-0.5_p20373'.
* The complete build log is located at '/var/tmp/portage/media-video/ffmpeg-0.5_p20373/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/media-video/ffmpeg-0.5_p20373/temp/environment'.
* S: '/var/tmp/portage/media-video/ffmpeg-0.5_p20373/work/ffmpeg-0.5_p20373'