Re: [Gcl-devel] Re: Axiom-developer post from

[Michael Koehne]

Moin Magnus Larsson,

> I am not a Lisp user. I only use Lisp to bootstrap me to Axiom or Maxima.
> I would like to execute the test, but I need exact Lisp step-by-step 
> instructions. foo.lisp contains (+ 2 3).

  the idea was good, but the example was wrong ;(

  try the same with a foo.lisp that contains

      (defun pyth (a b) (sqrt (+ (* a a) (* b b))))

  Next compile foo.lisp into foo.o, load it and produce a new lisp core :

      GCL (GNU Common Lisp)  2.7.0 ANSI   Jun 25 2004 23:35:41
      [ ... ]
      >(compile-file "foo.lisp")
      [ ... ]
      #P"foo.o"
      >(load "foo.o")
      [ ... ]
      144
  ;;; you can also load a .lisp file here, e.g. (load "baz.lisp")
  ;;; but this .lisp file would be byte-code in core, and not
  ;;; compiled C code.
      >(system:save-system "saved_foo_gcl")

  after starting the new image, try to use it :

      GCL (GNU Common Lisp)  2.7.0 ANSI   Jun 25 2004 23:35:41
      [ ... ]
      >(pyth 4 3)
      5.0

  The alternate way to produce a (cleaner) lisp core is :

      (compile-file "foo.lisp" :system-p t)
      (compile-file "baz.lisp" :system-p t)
      (compiler::link '("foo.o" "baz.o") "saved_foo_gcl" nil "-lextralibs")

  The benefit of this way, is that I could exactly tell, what object are
  going into the new core, and I could tell extra libraries, e.g. to
  interface X11, OpenGL, MPI or other libraries.
  
Bye Michael
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