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Subject: [Caml-list] Re: Compiling with camlp4 extensions

On 6/22/12 11:53 AM, Aaron Bohannon wrote:
> Hi,
Hi,
If you are writing code generator, write a rule making use of 
myocamlbuild, for every file, compiling file_pp.cmo(the preprocessed 
output). and if it's correct, go ahead compiling file.cmo.
For syntax extension, it's your repsonsibility to make it correct.
>
> I have been trying to use the new camlp4 to write an OCaml syntax
> extension.  All the examples I have seen so far suggest that I use the
> extension by passing ocamlc the "-pp" option.  But it seems that all the
> location info for error messages gets lost when I do this unless I catch
> and report the parse error myself within the extension.  Is there some
> way to get ocamlc to report the parse error at the correct location
> automatically?
>
> - Aaron
>