[Caml-list] Ocaml 3.03 alpha MinGW port

[Dmitry Bely <dbely@mail.ru>]

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OK, seems that I've almost completed the native Win32 MinGW port that uses
the same ./configure script and Unix Makefiles (of course updated to
support mingw32 target), so keepeng it in sync should not became the
nigntmare as with MSVC/Mac/... non-unix systems. If it works, maybe to add
it to the stock distribution after some testing? :-)

A special care was taken to not break any existing configuration (no
Gnu make conditional operators etc.), so after applying the patch OCaml
*should* configure and compile on all hosts that were supported before (if
I ocasionally did not break something).

The port supports the same set of libraries as the MSVC one. Both bytecode
and native modes seem to work properly.

Problems
--------

1. Profiling mode (gprof) does not work under MinGW (neither it does under
Cygwin port) - I can enable it in ./configure script, but asmrun/i386.S
does not compile when.

2. I have no idea how to integrate the DLL support. I used Cygwin port as a
template, but it also seems to lack it, although Cygwin/Mingw gcc can build
Win32 DLLs without a problem.

How to use it
-------------

1. Make sure you have the latest Cygwin tools from
http://sources.redhat.com/cygwin. "MinGW runtime" and "w32api" packages are
required.

2. Apply the patch attached to this message.


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3. Configure OCaml with
  bash -c "./configure -cc 'gcc -mno-cygwin' -host 'i586-pc-mingw32' \
           -tkdefs '-Ic:/Tcl/include' -tklibs '-Lc:/Tcl/lib'" 

Of course paths to tcl/tk may vary. You will also need to create import
libraries from tcl/tk DLLs using impdef/dlltool from the Cygwin
distribution.

If you do not need working labltk, simply omit -tkdefs/-tklibs above.

4. Build and install ocaml as usual:
  make world
  make opt
  make install

It *should* work. At least I was able to rebuld ocaml itself (make bootstrap)
and get working labltk tools (ocamlbrowser etc.)

Hope to hear from you soon,
Dmitry