This makefile currently builds pcre-ocaml on mingw for "dynlinked"
bytecode compilation.  I could not get a working native code build.  I
think there is an uncorrected problem in Ocaml in this direction.  The
common failure is to get a compiled, linked executable that crashes
before running the first line of Ocaml code.  I complained about this on
caml-list (not very well) and didn't get an answer.  If I have some
time, I'll refine those complaints.

Yes, you must build pcre by yourself if you don't want to depend on the
cygwin runtime.  You're on your own with depending on cygwin, as I have
heard mixing cygwin and mingw C runtimes can produce very hard to
diagnose bad problems.

I will also paste here a shell script for compiling pcre sans cygwin.
There's also a code generation command that you have to run, (to
generate maketables.c?) but it's easy enough to figure out.


Jeff Henrikson


Pcre-4.4:

gcc -mno-cygwin -DPOSIX_MALLOC_THRESHOLD=10 -c pcre.c
gcc -mno-cygwin -DPOSIX_MALLOC_THRESHOLD=10 -c maketables.c
gcc -mno-cygwin -DPOSIX_MALLOC_THRESHOLD=10 -c get.c
gcc -mno-cygwin -DPOSIX_MALLOC_THRESHOLD=10 -c study.c
gcc -shared -mno-cygwin pcre.o maketables.o get.o study.o -o
libpcre-mingw.dll -
Wl,--out-implib,libpcre-mingw.dll.a





-----Original Message-----
From: Jeff Henrikson [mailto:jehenrik@yahoo.com] 
Sent: Wednesday, May 12, 2004 1:31 PM
To: brian donovan
Subject: Re: PCRE-OCaml for OCaml 3.0.7 (MinGW) on Win32


Hi,

Yes there are some issues with building pcre-ocaml on mingw.  I didn't
know about them all when I submitted that patch.  I actually believe
there are problems with ocaml itself on mingw, specifically with regard
to linking C code.  I have had identical problems in my other C modules
too, unique to mingw.

Sorry but I am not at work today, where my pcre-ocaml build lives.  I
can send you my current makefile tomorrow.

Not all the things one would like to do work in this ocaml release under
mingw.  There are some super freaky things like building excutables that
crash before running a line of code and such.  I asked some imprecise
questions about them on the list a while back, but didn't get answered.
This was all for ocaml-3.07.  I have not taken the time to ask them more
precisely.

Right now I believe I limit myself to building a bytecode "dynlinked"
dll.

I think that first makefile I sent out didn't even have -mno-cygwin in
it.  Use it.

Apologies.


Jeff Henrikson



+++ brian donovan [11/05/04 21:25 +0800]:
> Hello,
> 
> I'm attempting to get PCRE-OCaml 5.0.8 working on a WinXP system on
> which I've installed Cygwin (all packages) and the MinGW port of OCaml

> 3.0.7 (precompiled w/installer).  Findlib/OCamlfind 1.0.4 is already 
> installed.
> 
> I've encountered some difficulties in getting PCRE-OCaml 5.0.8 going
> and  found your email in the header of a MinGW-based makefile included

> in the package.  While I can see that it's been many months since
Markus 
> Mottl included your makefile w/his work (predating the release of
OCaml 
> 3.0.7 it seems), I'm emailing in the hope that you're still working
with 
> OCaml on Win32 and can advise me on building PCRE-OCaml.
> 
> I'd be grateful for any guidance thatyou can give.
> 
> Thanks,
> brian donovan

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