Re: [Chicken-users] Macros and loading compiled code

[Richard]

On Wed, 10 Sep 2014 00:01:54 -0700
alex <address@hidden> wrote:

> Hi,
> 
> I defined a macro. I compiled it separately and built it into my main 
> program. When my main program calls the load procedure on normal
> Scheme source files, the procedures in these files use the macro
> without complaint.
> 
> However, when it loads the dynamic object code created from compiling 
> those same source files, I get an error about an "unbound value" in a 
> subexpression of a macro expression. This seems to be because the
> macro expressions are being evaluated as normal procedure
> applications. If I insert the macro definition verbatim into each
> source file before I compile it, the errors do not occur.
> 
> I tried passing both the source file and the macro definition file as 
> input to the compiler. The errors remain.
> What else can I do to ensure that the dynamic object code knows about 
> the macro definition?
> 
> --Alex
> 
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Try wrapping a module around the code to be compiled separately.
Compile it using the '-j <module-name>' flag then compile the generated
scheme file: <module-name>.import.scm

$ cat test.scm

(module test
*
(import chicken scheme)

(define-syntax a-macro
  (syntax-rules ()
    ((_ l r) (+ l r))))

(define (a-function l r)
  (+ l r))

)

compile like so:
$ csc -s test.scm -j test
$ csc -s test.import.scm

use it like so:
$ csi
#;1> (load "test.so")
#;2> (import test)
#;3> (a-function 1 2)
3
#;4> (a-macro 1 2)
3

I hope this is useful to you,
greetings,
Richard