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From: Yoann Padioleau <padator@wanadoo.fr>
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Subject: how to call an OCaml library from C/C++ ?
Date: Tue, 24 Aug 2010 10:50:36 -0700
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To: caml users <caml-list@inria.fr>
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X-Spam: no; 0.00; ocaml:01 ocaml:01 char:01 char:01 ideally:01 caml:02 caml:02 library:03 library:03 cleanup:04 cleanup:04 startup:05 startup:05 extension:06 extension:06 

Hi,

Is there a way to call OCaml library from a C/C++ program without the =
C++ program
knowing it's OCaml code ? I mean I can not touch the main of the C++ =
program
so it has to be completely transparent and it would be good if each call =
to the ocaml library
once finished free all the memory it was using.
Can we call  caml_startup() multiple times ? is there a caml_cleanup ?

Ideally I would like from C/C++ to have:


my_extension.c:
char* sanitize_stuff(char *s) {

  caml_startup();
  char * res =3D <call_ocaml_code_with_s>;
  caml_cleanup();
  return res;
}

and then link my c++ program with my_extension.o  and some .a containing =
ocaml code.