I went to cl-launch and did "make" and after that asdf-tools loads, but with the following warning: ; Fast loading ; /Users/rpg/.cache/common-lisp/acl-9.0-macosx-x64/Users/rpg/lisp/asdf/tools/release.fasl Warning: While compiling these undefined functions were referenced: INFERIOR-SHELL::PROCESS-WAIT from character position 5216 in /Users/rpg/lisp/asdf/ext/inferior-shell/run-generic.lisp INFERIOR-SHELL::MAKE-PIPE from character position 4086 in /Users/rpg/lisp/asdf/ext/inferior-shell/run-generic.lisp INFERIOR-SHELL::RESULT-AND from character position 3252 in /Users/rpg/lisp/asdf/ext/inferior-shell/run-generic.lisp INFERIOR-SHELL::RESULT-OR from character position 2958 in /Users/rpg/lisp/asdf/ext/inferior-shell/run-generic.lisp