I wanted to make ptpcam work from my Dockstar, an Arm device with no video output, with debian squeeze installed, with a 1.8-inch 20gb hard drive. I set up the build environment with the following: apt-get install build-essential subversion git libusb-dev lua5.1 liblua5.1 liblua5.1-dev I downloaded ptpcam from the German chdk forum and compiled: cd /usr/src svn co cd ptpcam make cp ptpcam /usr/lib/ptpcam I plugged in my camera (an A590is) and executed the following commands: