From: Mauricio Fernandez <mfp@...>
Date: 2007-10-18T05:04:22+09:00
Subject: Re: rocaml 0.6.0: fast, easy Ruby extensions in Objective Caml

On Thu, Oct 18, 2007 at 04:10:55AM +0900, Daniel Berger wrote:
> 
> 
> On Oct 17, 9:31 am, Mauricio Fernandez <m...@acm.org> wrote:
> > rocaml allows you to write Ruby extensions in Objective Caml.
> 
> <snip>
> 
> I grabbed the latest and greatest Ocaml tarball and installed it.
> However, when I try to install rocaml I get this:
> 
> sh: camlp5: not found
> *** extconf.rb failed ***
> 
> I have no camlp5 in /usr/local/bin. I have camlp4, however, and the
> comments in rocaml_extconf.rb suggest that either should suffice.
> 
> What should I do?

I see you solved this by installing camlp5, but I'd still like to fix the
camlp* selection code. What does  camlp4 -v  return for you?

$ camlp4 -v
Camlp4 version 3.10.0

camlp4 in 3.10.0 is incompatible with 3.09.2's (OTOH camlp5 *is* backwards
compatible).

The code that detects camlp5 is 

 have_camlp5 = ! `camlp5 -v 2>&1`["version"].empty?

For some reason it didn't work properly but I can't see why. Any idea?

-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby