> Hello
> 
> Could somebody tell me how to compile a piece of code ( "my_code.ml")  using
> a module ("my_tools.ml")
> 
> Here are the files :
> ___ my_tools.ml ____
> 
> module My_tools =
> struct
> let print_a_string a_string  =
>    print_string (a_string)
> ;;
> end
> 
> and
> ___ my_code.ml ____
> 
> open My_tools
> let a_string = "a string" ;;
> print_a_string a_string ;;
> 
> 
> Thanks
> François Colonna
> 

Just change my_code.ml
--- my_code.ml ---

open My_tools.My_tools
let a_string = "a string" ;;
print_a_string a_string ;;
---------------------

compile as follows

ocamlc my_tools.ml my_code.ml

Basically the file a.ml is interpreted by the compiler
as

module A = struct
  contents of a.ml
end

There is a more complete description in the manual
<http://caml.inria.fr/pub/docs/manual-ocaml/manual004.html>
(At the end)

Hope it helps,


-- 
Luc Maranget