Hello,<br><br>I have an issue with ocamlbuild.<br style="font-family: times new roman,serif;"><br>I type : ocamlbuild -use-ocamlfind sdit.native<br>I get the following error :<br>ocamlfind: Error from package `postgresql&#39;: This library requires multi-threading support<br>

Command exited with code 2.<br><br>I have checked this :<br>
<span style="font-family: times new roman,serif;">$ ocamlbuild -documentation | grep thread</span><br style="font-family: times new roman,serif;">
<span style="font-family: times new roman,serif;">flag {. byte, link, ocaml, program, thread .} &quot;threads.cma -thread&quot;</span><br style="font-family: times new roman,serif;">
<span style="font-family: times new roman,serif;">flag {. link, native, ocaml, program, thread .} &quot;threads.cmxa -thread&quot;</span><br style="font-family: times new roman,serif;">
<span style="font-family: times new roman,serif;">flag {. doc, ocaml, thread .} &quot;-I +threads&quot;</span><br style="font-family: times new roman,serif;">
<span style="font-family: times new roman,serif;">flag {. compile, ocaml, thread .} &quot;-thread&quot;<br><br></span>I have checked _build/_log also : tag thread is active<br><span style="font-family: times new roman,serif;"># 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 }</span><br style="font-family: times new roman,serif;">

<span style="font-family: times new roman,serif;">/usr/bin/ocamlfind ocamlopt -linkpkg -package extlib -package gsl -package postgresql -package pxp -package str dependent.cmx sdit.cmx -o sdit.native</span><br><br>I think there is a bug with -use-ocamlfind where -thread is not appended to the command.<br>

<br>I use ocaml 3.12.0<br><br>What do you think ?<br><br>Thanks,<br>Rémi<br>