I am not familiar with this specific library. In the general approach, you compile your c code, and package it into a library, 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 in the linking phase. Using ocamlc -verbose could give you a hint to which files are missing. Hope this helps, Rabih -----Message d'origine----- De : caml-list-boun...@yquem.inria.fr [mailto:caml-list-boun...@yquem.inria.fr] De la part de Aaron Bohannon Envoyé : lundi 20 juillet 2009 16:28 À : caml-list@yquem.inria.fr Objet : [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=556). The wrapper code compiles just fine. And the tests that use the OCaml library it builds work just fine. However, 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 \ -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/ sndfile.cma mytest.ml And I get: powerpc-apple-darwin8-gcc-4.0.1: sndfile_stub.o: No such file or directory Error while building custom runtime system I have tried setting every path-related option I could find, and nothing helped. I 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. In 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. Any help would be appreciated. - 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, intended solely for the addressee(s), and may contain legally privileged information. 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.sgam.com ******** Ce message et toutes les pieces jointes (ci-apres le "message") sont confidentiels et susceptibles de contenir des informations couvertes par le secret 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 sur le site www.sgam.fr _______________________________________________ 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
