Hi again,

I have created a myocamlbuild.ml which fixes the issue but I'm still
interested to get your advice.

open Ocamlbuild_plugin
open Command

let _ = dispatch begin function
   | After_rules ->
       flag ["ocaml"; "thread"; "compile"]  (S[A "-thread"]);
       flag ["ocaml"; "thread"; "link"]     (S[A "-thread"]);
   | _ -> ()
end

Rémi

2011/8/5 Rémi Dewitte <remi@gide.net>

> Hello,
>
> I have an issue with ocamlbuild.
>
> I type : ocamlbuild -use-ocamlfind sdit.native
> I get the following error :
> ocamlfind: Error from package `postgresql': This library requires
> multi-threading support
> Command exited with code 2.
>
> I have checked this :
> $ ocamlbuild -documentation | grep thread
> flag {. byte, link, ocaml, program, thread .} "threads.cma -thread"
> flag {. link, native, ocaml, program, thread .} "threads.cmxa -thread"
> flag {. doc, ocaml, thread .} "-I +threads"
> flag {. compile, ocaml, thread .} "-thread"
>
> I have checked _build/_log also : tag thread is active
> # Target: sdit.native, tags: { dont_link_with, extension:native,
> file:sdit.native, link, native, ocaml, package(extlib), package(gsl),
> package(postgresql), package(pxp), package(str), program, quiet, thread,
> traverse, use_menhir }
> /usr/bin/ocamlfind ocamlopt -linkpkg -package extlib -package gsl -package
> postgresql -package pxp -package str dependent.cmx sdit.cmx -o sdit.native
>
> I think there is a bug with -use-ocamlfind where -thread is not appended to
> the command.
>
> I use ocaml 3.12.0
>
> What do you think ?
>
> Thanks,
> Rémi
>