goiken@allan:~/ffmpeg$ ./configure --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb \
>     --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx \
>     --enable-libx264 --enable-nonfree --enable-version3 --enable-x11grab
ERROR: libx264 not found

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solving the problem.