xt touchscreen calibration widget and application
Simply type make to build, or make debug=1 to get additional info.
To rebuild the Calib widget you'll need wbuild.
Run xtcal and the calibration command will be written on stdout.
Ex. xinput set-prop <device name> 'Coordinate Transformation Matrix' a b c d e f g h i
xtcal will try to go fullscreen, if this doesn't work you need to run with:
xtcal -geometry <Width>x<Height>
libxaw7-dev
To install
sudo apt-get install libxaw7-dev