The warning is just a warning. It's a common message from Gambit when dynamically loading libraries. The issue is that when a library is loaded, it references a few functions which don't exist yet. Most likely these requirements will fulfilled by loading other libraries which define those functions. For example:
;;test.scm (c-define (foo) () void "foo" "" (bar))
;;test2.scm (define (bar) (display "hello"))
% gsc test.scm % gsi Gambit v4.3.2
(load "test")
*** WARNING -- Variable "bar" used in module "test.o1" is undefined "~/test.o1"
(load "test2")
"~/test2.scm"
(foo)
hello>
So it's probably just a timing issue. You could add `(load "test")' at the top of wrapper.scm and compile wrapper.scm, and then run `gsi wrapper.o1' instead.
On Jan 19, 2009, at 8:48 PM, TongKe Xue wrote:
Sorry, that last line should say:
gsi test.scm *** WARNING -- Variable "disp" used in module "wrapper-s" is undefined
On Mon, Jan 19, 2009 at 5:43 PM, symbolic expression <symbolic.expression@gmail.com
wrote:
hi!
I have wrapper.scm (which is compiled code), and test.scm (which is interpreted)
i.e. (compile-file-to-c "wrapper"); (link-flat '("wrapper ...) output: "blah.o1.c"); gcc -shared -fPIC ... blah.o1.c -o blah.o1
test.scm: (load "blah") ...
and I run everything with "gsi test.scm"
Now, here's the problem. In test.scm, I need to call a glutDisplayFunc, which requires a _C_ callback. Okay, so I define function with (c-define (c-disp ...) ... (disp)). (disp) is the scheme funfction that does the real workd; c-disp is a c wrapper around disp. Since test.scm is interpted, I have to put it in wrapper.scm -- however, I want to keep disp in test.scm (rapid prototypinhg, changing it on the fly, etc ...). Question is, how can I get c-disp (which is in wrapper.scm) to get call (disp), which is in test.scm?
if I just do wrapper.scm:
(c-define (c-disp) () void "f" "" (disp))
and test.scm: (load "graphics")
;(c-define (c-disp) () void "f" "" (disp))
(define (disp) (glClear GL_COLOR_BUFFER_BIT) (glutWireTeapot 0.5))
and run gsi test.scm, I get:
$gsi test.scm *** WARNING -- Variable "format" used in module "wrapper-s" is undefined
so the question is ... how can i get compile scheme code to 'wait' in order to call interpted scheme code?
thanks!
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