A word of comment: Markus uses a slightly more advanced feature of
ocamlbuild, which is the ability to set compilation tags not in the
ocamlbuild invocation command, as you've been using, but in a dedicated
"_tags" file in the repository:

https://bitbucket.org/mmottl/ocaml-playground/src/65d3ec500ac36683e18d0b84dbf98115f82ea8af/lacaml_test/_tags

You can see the line "true: package(lacaml)", which means that all
compilation commands needed to compile whatever target is required
(test.native, test.docdir/index.html...) will use the lacaml ocamlfind
package (this only works if ocamlbuild is invoked with -use-ocamlfind,
which is the case in his Makefile).

On Thu, Feb 21, 2013 at 3:34 PM, Markus Mottl <markus.mottl@gmail.com>wrote:

> Hi,
>
> I've just set up a small, self-contained example "lacaml_test" in my
> OCaml playground repository on Bitbucket:
>
>   https://bitbucket.org/mmottl/ocaml-playground
>
> Just clone the repository to your computer:
>
>   hg clone ssh://hg@bitbucket.org/mmottl/ocaml-playground
>
> Then follow the instructions in the README files.
>
> Regards,
> Markus
>
> On Thu, Feb 21, 2013 at 8:25 AM, Elisa Rebolini <erebolini@gmail.com>
> wrote:
> > I've installed lacaml 7.0.3 by following the installation procedure
> >         'ocaml setup.ml -configure'
> >         'ocaml setup.ml -build'
> >         'ocaml setup.ml -install'
> > The path to the lacaml package is /usr/local/lib/ocaml/site-lib/lacaml
> > and my Makefile is
> >
> > hostname := $(shell uname -n)
> >
> > # Default
> > LIB=-I,+site-lib/lacaml
> >
> > ifeq ($(hostname),clastos)
> > LIB=-I,+site-lib/lacaml
> > endif
> >
> > ifeq ($(hostname),bulle)
> > LIB=-I,/usr/local/lib/ocaml/3.12.1/lacaml
> > endif
> >
> > all:
> >         ocamlbuild -libs bigarray,lacaml,str,unix -verbose 2 -cflags
> $(LIB)
> > -lflags $(LIB) molexc.native
> >
> > clean:
> >         ocamlbuild -clean
> >
> > doc:
> >         ocamlbuild -libs bigarray,lacaml,str,unix -verbose 2 -cflags
> $(LIB)
> > -lflags $(LIB) molexc.docdir/index.html
> >
> > thanks
> > --
> > Elisa
> >
> > Le 21/02/2013 14:11, Gabriel Scherer a écrit :
> >> It would help to have more precise information about your setup. Could
> you
> >> detail how you installed lacaml on your system, and provide a directory
> >> tarball for a simple project allowing to reproduce your problem (with
> the
> >> _tags file etc.)?
> >>
> >> On Thu, Feb 21, 2013 at 2:07 PM, Elisa Rebolini <erebolini@gmail.com>
> wrote:
> >>
> >> Hello list,
> >> I'm developping a quantum chemistry software with ocaml and use lacaml
> >> as a binding to the LAPACK and BLAS libraries.
> >> I have a warning at the compilation with ocamlbuild
> >>         Warning: Failed to build the module Lacaml requested by ocamldep
> >>         mid rule ocaml: ml -> cmo & cmi (%=parser_epsilon ): cache hit
> >> but the compilation is still successful and the program works as
> >> expected but when I try to compile the documentation I have an error
> >>         Error: Unbound module Lacaml
> >> I'm not very skilled (yet?) with caml so any help would be very much
> >> appreciated.
> >> Thanks a lot
> >>>
> >>> --
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> >>>
> >>
> >
> > --
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>
>
>
> --
> Markus Mottl        http://www.ocaml.info        markus.mottl@gmail.com
>