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Date: Mon, 25 Jun 2007 11:36:52 -0400
From: Andrew Warshaver <awarshaver@janestcapital.com>
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To: caml-list@yquem.inria.fr
Subject: extraneous -pp options with myocamlbuild
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X-Spam: no; 0.00; -pp:01 -pp:01 pcre:01 netstring:01 camlp:01 lib:01 cmo:01 lib:01 sexp:01 cmo:01 ocamlfind:01 ocamlfind:01 -thread:01 -package:01 ocaml:01 

Hi Folks,

I'm trying to use a myocamlbuild file with ocamlbuild.  It appears to me 
that by my specifying a -pp option, an extra -pp option gets thrown in 
and I'm not sure why.  Here is my myocamlbuild.ml (which I stole mostly 
from another email):

$ cat myocamlbuild.ml
open Ocamlbuild_plugin;;
open Command;;

let packages = "pcre,netstring,jane,lbm"

let pp = "camlp4o /home/awarshaver/multi-oc/lib/pa_type_conv.cmo 
/home/awarshaver/multi-oc/lib/pa_sexp_conv.cmo";;

let ocamlfind cmd =
S [A "ocamlfind"; A cmd; A "-thread"; A "-package"; A packages];;

flag ["ocaml"] (S[A "-pp"; A pp]);;
flag ["ocaml"; "link"] (A"-linkpkg");;

dispatch begin function
   | After_options ->
       Options.ocamlc := ocamlfind "c";
       Options.ocamlopt := ocamlfind "opt";
   | _ -> ()
end

And here is what happens at the terminal...

$ ./make.sh
+ /usr/local/home/godi310/godi/bin/ocamldep.opt -pp 'camlp4o 
/home/awarshaver/multi-oc/lib/pa_type_conv.cmo 
/home/awarshaver/multi-oc/lib/pa_sexp_conv.cmo' -pp '-pp '\''camlp4o 
/home/awarshaver/multi-oc/lib/pa_type_conv.cmo 
/home/awarshaver/multi-oc/lib/pa_sexp_conv.cmo'\''' -modules 
live_query.ml > live_query.ml.depends
sh: - : invalid option

As you can see, after the first -pp '..' there is another -pp, and then 
another '-pp ...', completely unexpected.

Thanks,
Andrew