From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on yquem.inria.fr X-Spam-Level: ** X-Spam-Status: No, score=2.8 required=5.0 tests=DNS_FROM_RFC_POST,SPF_NEUTRAL autolearn=disabled version=3.1.3 X-Original-To: caml-list@yquem.inria.fr Delivered-To: caml-list@yquem.inria.fr Received: from mail1-relais-roc.national.inria.fr (mail1-relais-roc.national.inria.fr [192.134.164.82]) by yquem.inria.fr (Postfix) with ESMTP id D607EBBAF for ; Mon, 20 Jul 2009 18:21:40 +0200 (CEST) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AsoCANM1ZErRVdSzmGdsb2JhbACPAooYPwEBAQEBBgsMBxOoWzOFLIhKAQMCBII0gVQFgT9ihWo X-IronPort-AV: E=Sophos;i="4.43,235,1246831200"; d="scan'208";a="33308648" Received: from mail-vw0-f179.google.com ([209.85.212.179]) by mail1-smtp-roc.national.inria.fr with ESMTP; 20 Jul 2009 18:21:40 +0200 Received: by vwj9 with SMTP id 9so2452675vwj.1 for ; Mon, 20 Jul 2009 09:21:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to:cc :content-type:content-transfer-encoding; bh=dPSFTocA/tWCWqBftENeWLf28dgjukduYkyrMmyplCw=; b=REreG7XgUUIRz3nSTEvnc7M/Cwx5KfjwsTM9H264TUsqaCA5s3u1QNAkvtXaQ/MNz3 Odfv91Z02A2dg5hY9B//z2iV/RBYnNJ1CImRyrgfAiHqEfHLHH7MxN91mc58nb0NcQ2V 41FM8+1w86ZumsO7GYJajFUCSjGLSlHh1t5FU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=Xx+NwClbKYIzF6nVfvYbzh64CxHyS1Vt6gkKjlEO21woLHMXNEOMRw18AHjeBzKIWy u2f9GoSlJ7cDLe6mZhmQN7HYylMSHFdBjbuQtcxZpGwLW0CwJcWFR060PWIbLscaRNh7 OXMG7PzkFnVKdcyonKdaojg8T9NCewQSqRsGg= MIME-Version: 1.0 Sender: aaron678@gmail.com Received: by 10.220.73.140 with SMTP id q12mr5044933vcj.114.1248106899234; Mon, 20 Jul 2009 09:21:39 -0700 (PDT) In-Reply-To: <1BB928AA56A7E74DB134B7F5CDDA390C056072F1@frcor-exmb04.europe.am.socgen> References: <1BB928AA56A7E74DB134B7F5CDDA390C056072F1@frcor-exmb04.europe.am.socgen> Date: Mon, 20 Jul 2009 12:21:39 -0400 X-Google-Sender-Auth: 7c28f407b2e2e83f Message-ID: Subject: Re: [Caml-list] how to use c wrapper files in libraries From: Aaron Bohannon To: RABIH.ELCHAAR@sgam.com Cc: caml-list@yquem.inria.fr Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Spam: no; 0.00; ocamlc:01 -verbose:01 ocamlc:01 gcc:01 ocaml:01 ocaml:01 gcc:01 -cclib:01 -verbose:01 contrib:01 compile-time:01 -custom:01 stub:01 cmo:01 usr:01 Thank you. This does clarify some things. Everything works like clockwork after reworking things this way. Based on the output of "ocamlc -verbose", it seems that if you pass "file.o" file to "ocamlc -a", it does nothing except remember the name "file.o" and pass it to gcc when the OCaml library is later used, which is a pretty useless and confusing behavior---in general, you will not be in the same directory that contains "file.o" when you use the OCaml library and I don't know of any gcc options that will make gcc look in other directories for object files. It would seem better for "ocamlc -a" to ignore ".o" files and display an appropriate warning. - Aaron On Mon, Jul 20, 2009 at 10:58 AM, wrote: > I am not familiar with this specific library. > In the general approach, you compile your c code, and package it into a l= ibrary, let's say libA.a > > Then while building your sndfile.cma, you should pass the option > ocamlc -a -o sndfile.cma -cclib -lA ... > > A caml executable linked with your library will have also libA.a passed i= n the linking phase. > > Using ocamlc -verbose could give you a hint to which files are missing. > > Hope this helps, > > Rabih > > -----Message d'origine----- > De=A0: caml-list-bounces@yquem.inria.fr [mailto:caml-list-bounces@yquem.i= nria.fr] De la part de Aaron Bohannon > Envoy=E9=A0: lundi 20 juillet 2009 16:28 > =C0=A0: caml-list@yquem.inria.fr > Objet=A0: [Caml-list] how to use c wrapper files in libraries > > Hello, > > I am trying to use the wrapper for libsndfile contributed by Erik de > Castro Lopo (http://caml.inria.fr/cgi-bin/hump.en.cgi?contrib=3D556). > The wrapper code compiles just fine. =A0And the tests that use the OCaml > library it builds work just fine. =A0However, I am having a frustrating > compile-time error when I try to compile my program in a different > directory. > > The wrapper code is being packaged into an OCaml library using the > following command: > > ocamlc -a -o sndfile.cma -custom sndfile_stub.o sndfile.cmo \ > =A0-ccopt -L/usr/local/lib -cclib -lsndfile > > Within the same directory, the test program can be successfully compiled = with: > > ocamlc -o test_sndfile sndfile.cma test_sndfile.ml > > Within a different directory, I used: > > ocamlc -o mytest -I /path/to/libsndfile-ocaml/files/ =A0 sndfile.cma =A0 = mytest.ml > > And I get: > > powerpc-apple-darwin8-gcc-4.0.1: sndfile_stub.o: No such file or director= y > Error while building custom runtime system > > I have tried setting every path-related option I could find, and > nothing helped. =A0I tried reading everything I could find about > compiling and using c wrappers for OCaml, but there is a severe lack > of documentation on the topic. =A0In particular, I could find no example > of a c object file being given as an argument to an "ocamlc -a" > command, so I am not sure what that is supposed to do, which makes it > impossible for me to understand this error message. > > I am using OCaml 3.10.1 on OS X 10.4. =A0Any help would be appreciated. > > =A0- Aaron > > _______________________________________________ > Caml-list mailing list. Subscription management: > http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list > Archives: http://caml.inria.fr > Beginner's list: http://groups.yahoo.com/group/ocaml_beginners > Bug reports: http://caml.inria.fr/bin/caml-bugs > This message and any attachments (the "message") are confidential, intend= ed solely for the addressee(s), and may contain legally privileged informat= ion. > Any unauthorised use or dissemination is prohibited. > E-mails are susceptible to alteration. > Neither Societe Generale Asset Management nor any of its subsidiaries or = affiliates shall be liable for the message if altered, changed or falsified= . > > Find out more about Societe Generale Asset Management's proposal on www.s= gam.com > > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0******** > > Ce message et toutes les pieces jointes (ci-apres le "message") sont conf= identiels et susceptibles de contenir des informations couvertes par le sec= ret professionnel. > Ce message est etabli a l'intention exclusive de ses destinataires. > Toute utilisation ou diffusion non autorisee est interdite. > Tout message electronique est susceptible d'alteration. Societe Generale = Asset Management et ses filiales declinent toute responsabilite au titre de= ce message s'il a ete altere, deforme ou falsifie. > > Decouvrez l'offre et les services de Societe Generale Asset Management su= r le site www.sgam.fr > >