case $THIS_SUB_DEPENDS in
  RUBY) depends ruby "--with-ruby" ;;
  PYTHON) depends python "--with-python" ;;
  PHP) depends PHP "--with-php" ;;
  TCL) depends tcl "--with-tcl" ;;
  CSHARP) depends CSHARP "--with-csharp" ;;
  *) message "${PROBLEM_COLOR}Unknown sub-dependency: ${THIS_SUB_DEPENDS}${DEFAULT_COLOR}" && return 1 ;;
esac

.