Re: [Caml-list] Can't build a target with C stubs using ocamlbuild

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

This seems to be an ocamlbuild bug that should be reported on the bugtracker:
  http://caml.inria.fr/mantis/

On Fri, Jun 5, 2015 at 3:55 PM, Christiano F. Haesbaert
<haesbaert@haesbaert.org> wrote:
> Just one more question, now with the real code, I was able to move
> everything to myocamlbuild, but I'm getting a warning:
> File "_tags", line 10, characters 12-28:
> Warning: the tag "linkdep(stubs.o)" is not used in any flag
> declaration, so it will have no effect; it may be a typo. Otherwise
> use `mark_tag_used` in your myocamlbuild.ml to disable this warning.
>
> ## build.sh ##
> ocamlbuild -use-ocamlfind all.otarget $@
>
> ## _tags line ##
> <*.native>: linkdep(stubs.o)
>
> ## myocamlbuild.ml ##
> open Ocamlbuild_plugin;;
> dispatch begin function
>   | After_rules ->
>     pflag ["ocaml";"compile";] "ppopt" (fun s -> S [A"-ppopt"; A s]);
>     pflag ["ocaml";"ocamldep";] "ppopt" (fun s -> S [A"-ppopt"; A s]);
>     pdep ["link"] "linkdep" (fun param -> [param])
>   | _ -> ()
> end;;
>
> It seems to be the same case as
> http://stackoverflow.com/questions/25585813/mark-tag-used-warning-with-ocaml-4-02-0
>
> Should I just use mark_tag_used ? It seems something else is wrong
> since the tag is actually used.
>
>
> On 5 June 2015 at 12:47, Christiano F. Haesbaert
> <haesbaert@haesbaert.org> wrote:
>> On 5 June 2015 at 12:38, Jeremy Yallop <yallop@gmail.com> wrote:
>>> On 5 June 2015 at 11:29, Christiano F. Haesbaert
>>> <haesbaert@haesbaert.org> wrote:
>>>> ### toto_c.c ###
>>>> ### toto_c.ml ###
>>>
>>> Both of these files will be compiled to object files called
>>> 'toto_c.o'.  Renaming one of them (e.g. toto_c.c to toto_c_stubs.c)
>>> should fix the problem.
>>
>> Hooray, great, that did the trick, thanks a lot :D.
>
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