case $THIS_SUB_DEPENDS in
      DB) message "DB support requested, forcing db dependency" &&
          depends db;;
  SQLITE) message "SQLite support requested, forcing sqlite dependency" &&
          depends sqlite;;
   EXPAT) message "XML parser module requested, forcing expat dependency" &&
          depends expat;;
       *) message "${PROBLEM_COLOR}bogus sub_depends: $SPELL $THIS_SUB_DEPENDS${DEFAULT_COLOR}"
          return 1;;
esac

.