+'configure' can be launched from another directory than the ffmpeg
+sources to put the objects at that place. In that case, use an
+absolute path when launching 'configure',
+e.g. /ffmpegdir/ffmpeg/configure.
+
+2) Then type 'make' to build ffmpeg. On BSD systems, type 'gmake'
+instead of 'make'. You may need to install GNU make first.