From: "Stéphane Glondu" <steph@glondu.net>
To: Romain Bardou <bardou@lri.fr>
Cc: Benedikt Meurer <benedikt.meurer@googlemail.com>,
OCaml List <caml-list@yquem.inria.fr>
Subject: Re: [Caml-list] Link a .so/.dll dynamically
Date: Wed, 14 Sep 2011 18:07:28 +0200 [thread overview]
Message-ID: <4E70D140.8030507@glondu.net> (raw)
In-Reply-To: <4E70CEAE.8030807@lri.fr>
On 09/14/2011 05:56 PM, Romain Bardou wrote:
> [...]
> ocamlopt -c -ccopt -fPIC wrapper.c
> ocamlopt -c mylib.ml
> ocamlmklib wrapper.o mylib.cmx -o mylib
> ocamlopt -c main.ml
> ocamlopt dynlink.cmxa main.cmx -o main
> CAML_LD_LIBRARY_PATH=. ./main mylib.cmxa
>
> But when Dynlink.load is called, it fails with the following error:
>
> error loading shared library: /home/.../mylib.cmxa: invalid ELF header
>
> I'm thinking this is because the .cmxa has not been compiled with the
> -shared option, but I don't know how to tell ocamlmklib to compile with
> the -shared option.
You can turn the .cmxa generated by ocamlmklib into a .cmxs by calling
(for example):
ocamlopt -shared -I . -linkall -o mylib.cmxs mylib.cmxa
The .cmxs should then be loadable by Dynlink.load.
Cheers,
--
Stéphane
next prev parent reply other threads:[~2011-09-14 16:07 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-14 15:00 Romain Bardou
2011-09-14 15:35 ` Benedikt Meurer
[not found] ` <83695D27-A767-438A-B909-6864D1A655FE@googlemail.com>
2011-09-14 15:56 ` Romain Bardou
2011-09-14 15:59 ` Benedikt Meurer
2011-09-14 16:03 ` Romain Bardou
2011-09-14 16:07 ` Jérémie Dimino
2011-09-14 16:07 ` Stéphane Glondu [this message]
2011-09-14 16:12 ` Romain Bardou
2011-09-14 16:34 ` Stéphane Glondu
2011-09-14 16:42 ` Romain Bardou
2011-09-14 16:56 ` Stéphane Glondu
2011-09-15 8:49 ` Romain Bardou
2011-09-15 9:20 ` Stéphane Glondu
2011-09-15 9:23 ` Romain Bardou
2011-09-15 9:05 ` Romain Bardou
2011-09-14 16:15 ` Jérémie Dimino
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