Re: [Caml-list] How to compile different implementations of the same lib

[Richard Jones <rich@annexia.org>]

On Fri, Dec 02, 2005 at 04:54:07AM +1100, skaller wrote:
> On Thu, 2005-12-01 at 18:03 +0100, Christophe Raffalli wrote:
> > May be I still do not get the problem
> 
> Simple. Ocaml cheats. When you *compile* against a cmx
> or cmi/cmx pair, Ocaml 'cheats' and lifts non-interface
> information out of the cmx. This allows it to, for
> example, inline functions by cheating and grabbing their
> implementations from the cmx.
> 
> This 'cheating' is typesafe and transparent at the program
> code level but NOT the compilation model level.
> 
> To enforce abstraction, you have to ensure the cmx is
> not present when the dependent module is compiled,
> this forces the generated code to use indirection
> (closures, etc) [...]

I don't quite understand this.  I get that if the .cmx isn't
available, then one obviously cannot inline the code.  But why is it
that you cannot use a simple call instruction even if the .cmx isn't
available?

Rich.

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