From: Jacques Garrigue <garrigue@kurims.kyoto-u.ac.jp>
To: cartan@cartan.de
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] How to link libraries with C parts (Bug?)
Date: Tue, 12 Jun 2001 11:19:04 +0900 [thread overview]
Message-ID: <20010612111904Y.garrigue@kurims.kyoto-u.ac.jp> (raw)
In-Reply-To: <lkvgm6ah7r.fsf@pc022.bln.elmeg.de>
From: Nils Goesche <cartan@cartan.de>
> I have got a strange problem: I am writing an Ocaml library
> which uses some C code. However, when I try to link this library to
> an application, I get consistently some strange error (see below). I
> guess I am building the library incorrectly, but I have tried a
> gazillion of variations to no avail.
[...]
> That's it. Now I build it:
>
> $ ocamlc.opt -c mylib.mli
>
> $ ocamlopt.opt -c mylib.ml
>
> $ cc -c -DNATIVE_CODE -I /usr/local/lib/ocaml mylibcall.c -o mylibcall.o
>
> $ ocamlopt.opt -a mylibcall.o -o mylib.cmxa mylib.cmx
In order to use the autolink feature of ocaml, you should put your C
object inside a library. That is:
$ ar cf libmylibcall.a mylibcall.o
$ ocamlopt.opt -a -cclib -lmylibcall -o mylib.cmxa mylib.cmx
Then the rest should work correctly
>
> Compiling it:
>
> $ ocamlopt.opt -c -I /home/nils/src/caml/bug/mylib myapp.ml
>
> And linking:
>
> $ ocamlopt.opt -I /home/nils/src/caml/bug/mylib \
> -ccopt -L/home/nils/src/caml/bug/mylib mylib.cmxa \
> -o myapp myapp.cmx
You don't even need the -ccopt -L... : all directories marked by -I
are automatically added in the link.
Cheers,
Jacques Garrigue
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next prev parent reply other threads:[~2001-06-12 2:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-08 19:45 Nils Goesche
2001-06-12 2:19 ` Jacques Garrigue [this message]
2001-06-12 13:54 ` Nils Goesche
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