Excerpts from John Harrison's message of Sun Sep 21 20:05:36 +0200 2008:
> I'm trying once again to make some code work under the new camlp4. I
> don't want to make any real syntax modifications, but just enable
> quotations performing a simple string transformation on the body of
> the quotation, e.g. turning
> 

[...]

> Can anyone tell me what else I should be loading/opening?

You have to add the include directories:

$ ocaml camlp4of.cma -I +camlp4 -I +camlp4/Camlp4Parsers

Regards,

-- 
Nicolas Pouillard aka Ertai