Common Lisp package

a.lisp

(defpackage package-a
  (:use :cl)
  (:export :test-struct))

(in-package :package-a)

(defstruct test-struct
  slot1)

b.lisp

(defpackage package-b
  (:use :cl
        :package-a)
  (:export :main))
(in-package :package-b)

(defstruct (test-struct2 (:include test-struct
                                   ;(slot1 100)
                                   ))
  slot2)

(defun main (&rest argv)
  (declare (ignorable argv))
  (print (make-test-struct2)))

build.lisp

(load "a.lisp")
(load "b.lisp")
(save-application "test-app" :toplevel-function #'package-b:main :prepend-kernel t)

Makefile

BIN = test-app

all: $(BIN)

test-app: a.lisp b.lisp
	ccl64 -l build.lisp

clean:
	rm -f $(BIN)