quasar ~ # emerge -pv ffmpeg

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild     U ] media-video/ffmpeg-0.4.9_p20060530 [0.4.9_p20060302] USE="a52 aac dts encode imlib mmx ogg oss sdl theora threads truetype vorbis xvid zlib -amr -debug -doc -ieee1394 -network -test -v4l -x264" 0 kB


quasar ~ # grep CFLAGS /etc/make.conf
CFLAGS="-O2 -mtune=pentium-m -march=pentium-m -mmmx -msse -msse2 -pipe"
CXXFLAGS="${CFLAGS}"