Compiling ocaml files from a "remote" toplevel

"[email protected] [ocaml_beginners]" <[email protected]> 02 Dec 2015 05:40:48 -0800

Newsgroups	gmane.comp.lang.ocaml.beginners
Message-ID	<[email protected]>

I have two OCaml project directories, Controller_Dir and Controlled_Dir.
I am inside a toplevel located in Controller_Dir. From that toplevel, I would like to compile the ocaml files contained in Controlled_Dir.

If I were outside the toplevel, I would simply type :

cd Controlled_Dir
ocamlc wathever_I_want_to_compile
cd Controller_Dir


How would I "translate" this in the toplevel ? I tried Sys.command-ing
everything, but unfortunately this does not work for the cd command.