Re: [Caml-list] Ocamlbuild question

[Matthieu Dubuget <matthieu.dubuget@gmail.com>]

Matthieu Dubuget a écrit :
> Matthieu Dubuget a écrit :
>   
>> Nicolas Pouillard a écrit :
>>     
>>> Excerpts from Matthieu Dubuget's message of Wed Feb 11 23:26:43 +0100 2009:
>>>   
>>>       
>>>> Hello,
>>>>
>>>> I'm trying to manage "internal" camlfind packages. I use "internal" with
>>>> the same meanning than in ocamlbuild documentation when speaking about
>>>> libraries.
>>>>
>>>> I want my camlfind packages to be re-installed if one of their
>>>> dependency was modified. For this, I wrote a simple rule, based on
>>>> %.iocamlfind files containing the files to install into findlib
>>>> directory. This rule also produces a stamp file : %.oocamlfind.
>>>>
>>>> I also want my camlfind package to be installed if they are needed by
>>>> another rule. For this, I do: dep ["pkg_"^nm][nm ^ ".oocamlfind"] for
>>>> each internal package.
>>>>
>>>> It seems to work ok: Suppose that package toto requires package tutu.
>>>> When I ask ocamlbuild toto.oocamlfind, the packages tutu is re-built if
>>>> needed. And if I modify one file of tutu, and then ask ocamlbuild to
>>>> generate toto.oocamlbuild, tutu is re-built and installed into findlib
>>>> directories. fine.
>>>>
>>>> BUT, when I'm producing a %.native from %.cmx, my dependencies (ie
>>>> %.oocamlfind files) are inserted in the command line...
>>>>
>>>> Here is an example:
>>>> ocamlfind ocamlopt -linkpkg -package mtsvrac -package log
>>>> logtest/test.cmx mtsvrac.oocamlfind log.oocamlfind -o logtest/test.native
>>>>
>>>> mtsvrac.oocamlfind and log.oocamlfind where added to the dependencies of
>>>> logtest/test.native.
>>>>
>>>> What would be the right solution to avoid this problem?
>>>> Is there something like a "dependency that should not be linked?"
>>>>     
>>>>         
>>> Hello,
>>>
>>> You should try to tag your .oocamlfind file with the dont_link_with tag.
>>>
>>> (this point certainly needs an entry in the FAQ...)
>>>
>>> Best regards,
>>>
>>>   
>>>       
>> It seems not to work – at least with ocaml 3.10.2 from godi.
>>
>>  I have:
>>
>>     
>>>> ocamlbuild -show-tags mtsvrac.oocamlfind
>>>> Tags for "mtsvrac.oocamlfind":
>>>> {. dont_link_with, extension:oocamlfind, file:mtsvrac.oocamlfind, quiet,
>>>>   traverse .}
>>>> Finished, 0 targets (0 cached) in 00:00:00.
>>>>         
>> and still
>>
>>     
>>>> ocamlopt.opt: don't know what to do with mtsvrac.oocamlfind.
>>>>         
>> I will check at home with 3.11
>>     
>
> Idem
>   

Thanks to Nicolas: the solution was:
- tag .oocamlfind files with "dont_link_with"
- and add "dont_link_with" in left part of dep:

> dep ["pkg_"^nm;"dont_link_with"][nm ^ ".oocamlfind"] 

Matt