Q: How i can use Mutex and thread ..

[Laurent Colombet <Laurent.Colombet@cea.fr>]

 Hi,

  I have the following error :

        Objective Caml version 2.00

# let forks = Array.create 5 (Mutex.create());;
The external function `caml_mutex_new' is not available

  and i think that it's the same thing with ocmal 2.01 :

        Objective Caml version 2.01

# let forks = Array.create 5 (Mutex.create());;
Reference to undefined global `Mutex'
#

  could somebody help me ?

    thanks in advance

     Laurent

P.S. Examples of Ocaml programs using thread are welcome