case "$THIS_SUB_DEPENDS" in
  VOLUME_ID) true;;
     EXTRAS) message "${MESSAGE_COLOR}Forcing building of hash function" \
             "generator and access control lists${DEFAULT_COLOR}" &&
             list_add UDEV_OPTS --enable-extras
             list_remove UDEV_OPTS --disable-extras
             depends acl &&
             depends gperf &&
             depends pkgconfig &&
             depends glib2 &&
             depends libusb &&
             depends usbutils &&
             depends USBIDS &&
             depends PCIIDS ;;
          *) message "${PROBLEM_COLOR}bogus sub_depends: $SPELL $THIS_SUB_DEPENDS${DEFAULT_COLOR}" &&
             return 1;;
esac
