opt.add_option('--disable-gui', action='store_true', default=False, help='disable building of GUI tools')
opt.add_option('--target-windows', action='store_true', default=False, help='set up to do a cross-compile to make a Windows package')
opt.add_option('--target-debian', action='store_true', default=False, help='set up to compile for a Debian/Ubuntu package')
opt.add_option('--disable-gui', action='store_true', default=False, help='disable building of GUI tools')
opt.add_option('--target-windows', action='store_true', default=False, help='set up to do a cross-compile to make a Windows package')
opt.add_option('--target-debian', action='store_true', default=False, help='set up to compile for a Debian/Ubuntu package')