radangel/meson_options.txt

option('udev-dir', type: 'string', value: '', description: 'Absolute path of the udev base directory. Set to \'no\' not to install the udev rule')
option('systemd-unit-dir', type: 'string', value: '', description: 'Absolute path of the systemd service directory. Set to \'no\' not to install the radangeld service file.')