udev:gnupg:on:required::
udev:smgl-fhs:on:required::
udev:gobject-introspection:off:optional::--disable-introspection
udev:gtk-doc:off:optional:--enable-gtk-doc:--disable-gtk-doc
udev:libselinux:off:optional:--with-selinux:--without-selinux
udev:(SYSTEM-LOGGER):off:optional:--enable-logging:--disable-logging
