Great, that looks like it's working. Many thanks.
On Dec 20, 2010, at 10:02 PM, Michael Ekstrand wrote:
On 12/20/2010 08:36 PM, orb...@ezabel.com wrote:
Thanks, I forgot to mention that I am setting that:
(*pp camlp4o pa_lwt.cmo *)
(that is where it is coming from in my paste)
But it is still failing at the Dynlink.
The thing is that camlp4o doesn't know where to find pa_lwt.cmo. This
is what ocamlfind helps with. Unfortunately, OCamlMakefile's
ocamlfind
integration is incomplete when it comes to preprocessors.
On some systems, you may be able do 'camlp4o -I +lwt pa_lwt.cmo', but
that isn't portable (it depends on lwt being installed in the std-lib
directory).
So, the real solution is to use a shell script which wraps 'camlp4o'
and
looks up the appropriate package lines with ocamlfind. It will do
something like
camlp4 $(ocamlfind -predicates preprocesor,syntax -syntax camlp4o
-package lwt.syntax)
but I do not remember the exact details. I do remember that I
defined a
PP environment variable in my Makefile with the path to the script,
so I
could do
(*pp $PP lwt.syntax *)
and it would expand to wherever the shell script was (I had multiple
directories in my source tree when I used OCamlMakefile).
- Michael
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