coloured SLIME REPL for Clojure

clojure-font-lock-setup.el

;;; all code in this function lifted from the clojure-mode function
;;; from clojure-mode.el
(defun clojure-font-lock-setup ()
  (interactive)
  (set (make-local-variable 'lisp-indent-function)
       'clojure-indent-function)
  (set (make-local-variable 'lisp-doc-string-elt-property)
       'clojure-doc-string-elt)
  (set (make-local-variable 'font-lock-multiline) t)

  (add-to-list 'font-lock-extend-region-functions
               'clojure-font-lock-extend-region-def t)

  (when clojure-mode-font-lock-comment-sexp
    (add-to-list 'font-lock-extend-region-functions
                 'clojure-font-lock-extend-region-comment t)
    (make-local-variable 'clojure-font-lock-keywords)
    (add-to-list 'clojure-font-lock-keywords
                 'clojure-font-lock-mark-comment t)
    (set (make-local-variable 'open-paren-in-column-0-is-defun-start) nil))

  (setq font-lock-defaults
        '(clojure-font-lock-keywords    ; keywords
          nil nil
          (("+-*/.<>=!?$%_&~^:@" . "w")) ; syntax alist
          nil
          (font-lock-mark-block-function . mark-defun)
          (font-lock-syntactic-face-function
           . lisp-font-lock-syntactic-face-function))))

(add-hook 'slime-repl-mode-hook
          (lambda ()
            ;(font-lock-mode nil)
            (clojure-font-lock-setup)
            ;(font-lock-mode t)
            ))

(defadvice slime-repl-emit (after sr-emit-ad activate)
  (with-current-buffer (slime-output-buffer)
    (add-text-properties slime-output-start slime-output-end
                         '(font-lock-face slime-repl-output-face
                                          rear-nonsticky (font-lock-face)))))

(defadvice slime-repl-insert-prompt (after sr-prompt-ad activate)
  (with-current-buffer (slime-output-buffer)
    (let ((inhibit-read-only t))
      (add-text-properties slime-repl-prompt-start-mark (point-max)
                           '(font-lock-face slime-repl-prompt-face
                                            rear-nonsticky
                                            (slime-repl-prompt
                                             read-only
                                             font-lock-face
                                             intangible))))))

Hi...sorry I get this error message:

error in process filter: Symbol's function definition is void: clojure-font-lock-setup

How can I fix it?...thanks!!!