(ext:install-c-compiler)
(setq c:*user-ld-flags* "-lSDL2")
(compile-file #p"source.lisp" :system-p t)
(c:build-program "mather" :lisp-files '("source.o"))
(ext:run-program "./mather" '("--op" "atan2" "-a" "-1.0" "-b" "0")
:output t :error t)
(si:quit)