See this post on beginner's list:
http://tech.groups.yahoo.com/group/ocaml_beginners/message/6905


On Wed, Oct 15, 2008 at 4:14 PM, Harrison, John R <john.r.harrison@intel.com
> wrote:

> This discussion of dynamic loading in 3.11 reminded me of a more basic
> question I meant to ask, but never did. On certain platforms, e.g. all
> Linuxes I've ever used, the following works in a plain OCaml toplevel:
>
>  #load "nums.cma";;
>
> On other platforms, notably Cygwin, it doesn't. (At least, for OCaml
> 3.10 on my version of Cygwin, which is not very old.)
>
>  # #load "nums.cma";;
>  Cannot load required shared library dllnums.
>  Reason: dllnums.so: dynamic loading not supported on this platform.
>
> I was sure that Mac OS X was among the platforms where this *doesn't*
> work, based on experiments a year or two ago. However I recently found
> that apparently it *does* after all work on my Mac. Since the original
> experiments I've upgraded the Mac to Leopard, and maybe I've even
> changed my OCaml version, though I don't remember for sure. Am I just
> plain wrong, or has this really only started to work recently?
>
> John.
>
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