Original bug ID: 6058
Reporter: @hcarty
Assigned to: @gasche
Status: closed (set by @xavierleroy on 2015-12-11T18:21:29Z)
Resolution: fixed
Priority: high
Severity: major
Version: 4.00.1
Target version: 4.01.0+dev
Fixed in version: 4.01.0+dev
Category: -for ocamlbuild use https://github.com/ocaml/ocamlbuild/issues
Has duplicate: #6127
Monitored by: meyer @gasche @hcarty

Bug description

This bug is also present in the latest 4.01.0+dev snapshot from opam (4.01.0+dev18-2013-06-13).

The full command and output:

$ ocamlbuild -use-ocamlfind -tag thread -package threads t.cma

• ocamlfind ocamlc -a -package threads t.cmo -o t.cma
  ocamlfind: Error from package `threads': Missing -thread or -vmthread switch
  Command exited with code 2.
  Compilation unsuccessful after building 3 targets (0 cached) in 00:00:00.

The bug is present when trying to compile:
t.cma, t.cmxa

but not when trying to compile:
t.native, t.byte

Steps to reproduce

1. Create a (possibly empty) file to compile (ex. t.ml)
2. Run 'ocamlbuild -use-ocamlfind -tag thread -package threads t.cma'

Additional information

Tested against 4.00.1 and 4.01.0+dev18-2013-06-13.