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

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

I reported and proposed a fix at
  http://caml.inria.fr/mantis/view.php?id=6893

On Fri, Jun 5, 2015 at 4:24 PM, Gabriel Scherer
<gabriel.scherer@gmail.com> wrote:
> 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.
>>
>> --
>> Caml-list mailing list.  Subscription management and archives:
>> https://sympa.inria.fr/sympa/arc/caml-list
>> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
>> Bug reports: http://caml.inria.fr/bin/caml-bugs