(ext:install-c-compiler)

(compile-file #p"source.lisp" :system-p t)

(c:build-program "hello" :lisp-files '("source.o"))

(ext:run-program "./hello" '() :output t :error t)

(si:quit)

;;;; Run this like 
;;;; $ ecl -load build.lisp # from the same directory.