ocamlbuild single quotes causing trouble

[Andrew Warshaver <awarshaver@janestcapital.com>]

Hi all,

I was trying to compile a project using ocamlbuild with an external 
library located distantly, so I did the following (I am also doing 
preprocessing on the file):

ocamlbuild -libs pcre -cflags -I,~/multi-oc/lib -pp "camlp4o 
~/multi-oc\/lib/pa_type_conv.cmo ~/multi-oc/lib/pa_sexp_conv.cmo" 
live_query.byte

Then ocamlbuild eventually runs the following command:

/usr/local/home/godi310/godi/bin/ocamlc.opt -c -I '~/multi-oc/lib' -pp 
'camlp4o ~/multi-oc/lib/pa_type_conv.cmo 
~/multi-oc/lib/pa_sexp_conv.cmo' -o id.cmi id.mli

and spits the error:

File "id.mli", line 1, characters 0-9:
Unbound module Jane
Command exited with code 2.

I noticed, however, if I remove the single quotes from the command -- 
like this --

/usr/local/home/godi310/godi/bin/ocamlc.opt -c -I ~/multi-oc/lib -pp 
'camlp4o ~/multi-oc/lib/pa_type_conv.cmo 
~/multi-oc/lib/pa_sexp_conv.cmo' -o id.cmi id.mli

it works just fine.  I also discovered that if I don't use the ~ abbrev. 
then everything is happy (although this took me a long time to 
discover!).  Is this a problem with ocamlbuild, or something deeper, or 
perhaps even expected behaviour?

Andrew