Re: [Caml-list] Telling Ocamlbuild to link seemingly unreferenced modules

[Gabriel Scherer <gabriel.scherer@gmail.com>]

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Hello,

I'm not exactly sure this is a complete answer to your problem (I'm not
familiar with plugin linking and all that), but here is a small test:

a.ml:

> let () = print_endline "I'm 'a'!"
>

b.ml:

> let () = print_endline "I'm 'b'!"
>

myocamlbuild.ml:

> open Ocamlbuild_plugin
>
> let _ = dispatch begin function
>   | After_rules ->
>     dep ["use_b"] ["b.cmo"]
>   | _ -> ()
> end
>

I i run "ocamlbuild a.byte", then executing a.byte will only print "I'm
'a'!".

If I add the following _tags:
  "a.byte": use_b

Then a.byte will print both "I'm 'a'!" and "I'm 'b'!".

I don't know the exact semantics of this 'dispatch' function (After_rules,
etc.), I just imitated it from an other project doing a similar thing. I
suppose you could find more detailed answers in the ocamlbuild
documentation.

Hope it helps.

On Fri, May 6, 2011 at 4:34 PM, Dario Teixeira <darioteixeira@yahoo.com>wrote:

> Hi,
>
> I have a couple of plugin modules (say, "Foo.ml" and "Bar.ml") which become
> known to the main programme solely because they register themselves upon
> initialisation.  However, because there is no implicit dependency between
> the main programme and these plugins, when compiling with Ocamlbuild they
> are not linked in.  So what's the cleanest way of telling Ocamlbuild that
> these plugins should also be compiled and linked together with the main
> programme?
>
> Thanks in advance!
> Dario
>
>
>
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