Re: [Caml-list] Creating an OPAM package that wraps c functions that can be used in a non-custom utop

["Daniel Bünzli" <daniel.buenzli@erratique.ch>]

Le vendredi, 21 février 2014 à 11:46, mads379@gmail.com a écrit :
> The next thing I want to do is create an OPAM package for it that my co-
> workers and I can use. My question is, will I be able to create the package in
> such a way that the library can be loaded into utop using topfind so we don't
> have to build a custom top-level in the projects that use this library?

Yes.

> If it is possible, do you have any pointers to where I might find some
> information about how to do it?

First for generating the correct artefacts with ocamlbuild you can refer to these instructions:

    https://github.com/ocamllabs/ocaml-ctypes/issues/51#issuecomment-30729675

It uses ctypes so the stub C files is empty but ignore that, it also uses pkg-config for getting the cflags but you should be able to read through and simplify the myocamlbuild.ml if you don't need that.  

For the opam package use or generate a .install file at the toplevel of your distribution that will more or less look like this [1].

Feel free to ask further questions if you need to.  

Best,

Daniel

[1]
lib: [
"_build/META" {"META"}
"_build/geolocalisation.mli" {"geolocalisation.mli"}
"?_build/geolocalisation.cmti" {"geolocalisation.cmti"}
"_build/geolocalisation.cmi" {"geolocalisation.cmi"}
"_build/geolocalisation.cmx" {"geolocalisation.cmx"}
"_build/geolocalisation.cma" {"geolocalisation.cma"}
"_build/geolocalisation.a" {"geolocalisation.a"}
"_build/geolocalisation.cmxa" {"geolocalisation.cmxa"}
"_build/geolocalisation.cmxs" {"geolocalisation.cmxs"}
]
stublibs: [
"_build/dllgeolocalisation.so" {"dllgeolocalisation.so"}
]