Setup Lisp for Aquamacs Emacs

0. aquamacs emacs installed
1. install the slime plugin.
2. install a Lisp implementation; I use SBCL

3. set proper environment variables PATH: #SBCL_HOME, #SBCL_ROOT (details in the INSTALL file of SBCL)

4. tell Emacs to use SBCL : edit .emacs to add (setq inferior-lisp-program "sbcl")

done。