FreeBSDのscratchでカメラが使えない

• 20170303

% DISPLAY=:0 scratch
Executing: /usr/local/lib/squeak/4.10.2-2614/squeakvm -encoding UTF-8 -vm-display-x11 -xshm -plugins /usr/local/share/scratch/Plugins/:/usr/local/lib/squeak/4.10.2-2614/ -vm-sound-ALSA /usr/local/share/scratch/Scratch.image 
Fontconfig warning: "local.conf", line 1093: saw number, expected matrix
/usr/local/share/scratch/Plugins//so.CameraPlugin: Undefined symbol "convertImageYUYVToARGB32"
/usr/local/lib/squeak/4.10.2-2614//so.CameraPlugin: Undefined symbol "v4l2_open"
/usr/local/share/scratch/Plugins//so.CameraPlugin: Undefined symbol "convertImageYUYVToARGB32"
/usr/local/lib/squeak/4.10.2-2614//so.CameraPlugin: Undefined symbol "v4l2_open"