Building Coq installer for windows via debian cross-compilation
---------------------------------------------------------------
Pierre Letouzey (@inria.fr)


1) Packages to install from an official debian squeeze : see $OFFICIAL_DEBS
   in common.sh

   If you want to create a specialized debian chroot for this purpose,
   see debootstrap.sh

2) Extra custom debian packages to install : see $CUSTOM_DEBS in common.sh

  On amd64, you can simply install the ones from the ./debs/ subdirectory.

  Otherwise on i386 you can build these packages from sources, more information
  on http://debian.glondu.net/mingw32/. Normally, something like this should work:

  dget --build http://debian.glondu.net/mingw32/mingw32-gtk2_2.22.1-20101227-1.dsc
  sudo dpkg -i mingw32-gtk2*.deb
  dget --build http://debian.glondu.net/mingw32/mingw32-camlp5_6.02.2-1.dsc
  sudo dpkg -i mingw32-camlp5*.deb
  dget --build http://debian.glondu.net/mingw32/mingw32-lablgtk2_2.14.2+dfsg-1.1.dsc
  sudo dpkg -i mingw32-lablgtk2*.deb

3) Get Coq sources and install them in ./coq-src, for instance via:

  svn co svn://scm.gforge.inria.fr/svn/coq/branches/v8.4 ./coq-src

  or

  git clone git://scm.gforge.inria.fr/coq/coq-svn.git -b v8.4 ./coq-src

4) Build (after adapting version number in ./build and in coq-src/configure):

   ./build.sh


NOTES:

* This method only works for Coq 8.4 (and 8.3). Coq trunk is currently
  unsupported (extra dependencies about sourceview)

* The ocaml packages (straight and mingw32) should have exactly the same
  version, as well as camlp5, since we share them during configure/coqdep/...