I created a small example to learn how to do it.

Using cigloo I generated extern declaration and pasted
inside a bigloo module. Is there a way to include the
output of cigloo inside the module without copy/pasting?

Here is the content of main.scm:

(module foo
     ;; beginning of example.h
     (create_abc::ABC* () "create_abc")
     (sum::int (int int) "sum")
(type s-ABC_ (struct (value::int "value") (sum::*int,int,string->int "sum")) "struct ABC_")
     (type int,int,string->int "int ($(int,int,char *))")
(type *int,int,string->int (function int (int int string)) "int ((*$)(int,int,char *))")
     (type ABC s-ABC_ "ABC")
     (type ->ABC* "ABC *($())")
     (type int,int->int "int ($(int,int))")
     ;; end of example.h
  (main main))

(define (main x)
  (let ((out (create_abc)))
    (print "total:")
    (print out)))

When I run the command: bigloo main.scm libexample.so -o main

I get the following error:

main.c:19:8: error: unknown type name ‘ABC’
 extern ABC * create_abc();

What I am doing wrong?
#include <stdlib.h>
#include <stdio.h>

#include "example.h"

int bar(int a, int b, char * message) {
  printf("%s\n", message);
  return a + b + 40;

ABC * create_abc() {
  ABC * my_struct = malloc(sizeof(ABC));
  my_struct->value = 42;
  my_struct->sum = bar;
  return my_struct;

int sum(int a, int b) {
  return a + b;
typedef struct ABC_ {
  int value;
  int (*sum)(int a, int b, char * message);
} ABC;

ABC * create_abc();

int sum(int a, int b);

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