[Caml-list] Shared libraries again

[Caml-list] Shared libraries again

[Dmitry Lomov]

Hi,
is it possible build a shared C library which calls Caml code? It is OK
if shared library uses Caml runtime statically. I do not need to 
call Caml runtime from different shared libraries - only from one,
and it is OK for me if Caml values will be invalid outside shared
library. That is, my shared library wholly controls Caml runtime
startup.
For some reason ocamlmklib does not work for me - when I try to load
library created by it,  various caml_* references cannot be unresolved.

I am on Linux, i386.

Thanks in advance,
Dmitry

-- 
Dmitry Lomov
IntelliJ Labs / JetBrains Inc.
http://www.intellij.com
"Develop with pleasure!"

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Re: [Caml-list] Shared libraries again

[malc]

On 21 Sep 2002, Dmitry Lomov wrote:

> Hi,
> is it possible build a shared C library which calls Caml code? It is OK
> if shared library uses Caml runtime statically. I do not need to 
> call Caml runtime from different shared libraries - only from one,
> and it is OK for me if Caml values will be invalid outside shared
> library. That is, my shared library wholly controls Caml runtime
> startup.

*** Makefile
main: lib.so sh_c.o
        cc -o $@ $+ -Wl,-rpath,.

lib.so: sh.ml
        ocamlopt -c sh.ml
        ocamlopt -o $@ -cclib -shared sh.cmx

sh_c.o: sh_c.c
        ocamlc -o $@ -c $<

*** sh_c.c
#include <stdio.h>
#include <caml/mlvalues.h>
#include <caml/callback.h>

int main (int argc, char **argv)
{
  caml_startup(argv);
  callback (*caml_named_value ("ml_func"), Val_unit);
  return 0;
}

*** sh.ml
let ml_func () =
  print_string "moo";
  print_newline ()

let _ = Callback.register "ml_func" ml_func

-- 
mailto:malc@pulsesoft.com

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