/brz/remove-bazaar

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Setting Up A Windows Build Host

===============================

This document describes the steps taken to set up a Windows build host. It is

intended to be step-by-step instructions of what packages need to be installed,

where they can be gotten from, and how they are configured.

Baseline

========

This was written as a step-by-step as I set up the Amazon EC2 'desolation'

instance. This was based on an Amazon Windows 2003 instance. Also note that for

Amazon EC2, all programs were installed into the "C:" drive, as the "D:" drive

is essentially ``/tmp`` and is not preserved between launched instances.

Install Packages

================

1) Download cygwin's setup.exe from http://www.cygwin.com

   At present the current version is 1.5.25-15. This is used primarily to

   install the build scripts and gcc-mingw. Note that we explicitly *don't*

   install cygwin's python or bzr package. As we are only interested in

   running the native version of bzr. For information on running the cygwin

   port of bzr, look elsewhere.

   Probably not all of these packages are necessary, but they make life easier.

   a) gcc-mingw32

   b) make

   c) openssh

   d) rsync

   e) vim

   f) wget

   g) zip

   h) unzip

   i) patch

2) Download the supported versions of python from http://www.python.org

   a) python 2.6.4

   b) python 2.5.4 http://www.python.org/ftp/python/2.5.4/python-2.5.4.msi

   c) python 2.4.4 (there is no Windows installer for 2.4.5 or 2.4.6)

      http://www.python.org/ftp/python/2.4.4/python-2.4.4.msi

   Note that for Amazon EC2, all of these were installed int

3) Configure 'distutils' for the compiler that you will be using. For python

   2.4 and 2.5 we use gcc-mingw32, for 2.6 we use Visual Studio 2008.

   Edit ``D:\Python25\Lib\disutils\distutils.cfg`` (you have to create the

   file). You want to add a section like::

     [build]

     compiler = mingw32

   This also requires 'fixing' the cygwin gcc installation so that distutils

   can find it. Specifically, it knows to look for ``gcc.exe`` however, the

   latest versions of cygwin start using "alternatives" and making ``gcc`` just

   a symlink.

   You also need to add ``C:\cygwin\bin`` and ``C:\cygwin\lib`` into your

   environment path. This is generally done with::

        Right Click My Computer / Properties / Advanced / Environment Variables

        System Variables / Select 'PATH' / Edit

4) Download important python libraries. At the moment, the official Windows

   all-in-one installer is built using python 2.5. We will likely soon switch

   to python 2.6.

   a) http://pypi.python.org/pypi/setuptools

      Installing this first should make it easier to install some of the other

      tools. To install something using easy install, it is generally best to

      open up a ``cmd.exe`` shell (*not* a cygwin shell) and do::

        cd C:\Python25

        python.exe Scripts\easy_install-script.py -Z -O1 PACKAGE

      The '-Z' tells it to install as a regular directory. This generally works

      better with py2exe.

   b) pywin32 http://sourceforge.net/projects/pywin32/files/

   c) easy_install paramiko

      This will also bring in PyCrypto and compile it, so it is important to

      have configured step (3) correctly.

   d) easy_install Pyrex    (or Cython)

      Note, you should probably install pyrex for all versions of python. All

      of them need to run 'setup.py bdist_wininst' and so it is good to have it

      build automatically, rather than setting up an explicit build order based

      on which one has pyrex.

   e) easy_install cogapp

   f) install py2exe (easy_install failed)

      http://sourceforge.net/projects/py2exe/files/

   g) easy_install docutils

   h) Install PyQt

      http://www.riverbankcomputing.co.uk/software/pyqt/download

      Currently they only seem to offer PyQt 4.4.3 for python 2.5 and PyQt

      4.6.1 for python 2.6. They generally don't make it easy to install old

      versions of PyQt.

   i) Install pyreadline

      https://launchpad.net/pyreadline/+download

   j) easy_install pygments

5) Get Pageant, not strictly necessary, but it is a pretty good ssh-agent for

   Windows, and paramiko knows how to use keys from Pageant.

   http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

   Note that you probably want to set the environment variable

   ``BZR_SSH=paramiko`` at this time. Otherwise it will try to use the

   ``ssh.exe`` that it finds on your PATH (as configured in step 3), and

   cygwin's openssh does *not* know how to access Pageant.

   I usually get the 'all-in-one' installer, but only because it is easier. You

   only really need ``pageant.exe`` and possibly ``puttygen.exe``.

   If you do this, you'll probably also want to install a shortcut to

   ``pageant.exe`` in Start / Programs / Startup so that it always starts when

   you log in (though you still have to manually add your ssh keys.)

   Note that on the Amazon EC2 machine, I'm having problems with temp files

   being created without the permission for the current user to actually read

   them. They seem to be owned by ``Administrator`` rather than by

   ``Administrators``.

6) Install bzr. Usually it is easiest to just get the latest all-in-one

   installer from https://launchpad.net/bzr/+download

7) Install INNOSetup from:

   http://www.jrsoftware.org/isdl.php

   After installing, you'll want to add ``C:\Program Files\Inno Setup 5`` to

   your PATH.

8) Fix distutils for the specific version of gcc. Distutils in python2.4.4 has

   a bug where it assumes version strings have only 3 digits. The fix is to

   just change one '?' in the regex into a '*'::

        --- version.py	2009-11-05 14:41:47.497212900 -0800

        +++ version.py	2009-11-05 14:39:57.684712900 -0800

        @@ -97,7 +97,7 @@

             in the distutils documentation.

             """

        -    version_re = re.compile(r'^(\d+) \. (\d+) (\. (\d+))? ([ab](\d+))?$',

        +    version_re = re.compile(r'^(\d+) \. (\d+) (\. (\d+))* ([ab](\d+))?$',

                                     re.VERBOSE)

9) If you want to build in the source tree, you need the zlib dll and

   associated libraries, put somewhere on your path. The buildout routines grab

   this directly and add it to the build path, but that doesn't work for

   ``setup.py``.

   http://www.zlib.net/zlib123-dll.zip

   I usually download and extract this to something like ``C:\local\`` so that

   I end up with a ``C:\local\lib`` and ``C:\local\include`` directory. I then

   modify the ``distutils.cfg`` file to tell the compiler where to find these

   headers and libraries::

      [build_ext]

      include-dirs = C:/local/include

      library-dirs = C:/local/lib

   Note that you'll probably want to put the ``zlib1.dll`` into your path. You

   can:

     1) Add ``C:\local`` to your PATH variable in

        "My Computer/Properties/Advanced/Environment Variables"

     2) More logically, move ``zlib1.dll`` to either 'lib' or 'bin'

        subdirectories and add that.

     3) Copy it to ``C:\Windows\``.

   I recommend 3, mostly because lots of apps will want to use zlib1.dll in the

   long run. (You may already have it.)

10) Install Visual Studio 2008 Professional

    http://www.microsoft.com/downloads/details.aspx?FamilyId=83C3A1EC-ED72-4A79-8961-25635DB0192B&displaylang=en

    This is a 3GB DVD iso image. You can mount it directly with Microsofts

    iso mounting utility:

    http://download.microsoft.com/download/7/b/6/7b6abd84-7841-4978-96f5-bd58df02efa2/winxpvirtualcdcontrolpanel_21.exe

    You need at least Windows XP (which introduced direct iso support, I

    believe.)

    Note that there is a Service Pack 1 for Visual Studio. The ISO can be

    downloaded here:

    http://www.microsoft.com/downloads/thankyou.aspx?familyId=27673c47-b3b5-4c67-bd99-84e525b5ce61&displayLang=en

    However, on EC2, there isn't enough room on C: to actually run the

    installer. You need approx 6GB of free disk space. And EC2 only gives your

    10GB and Windows itself takes up about 5GB. So we are currently running

    stock VS 2008 with no service packs. (Even installing VS 2008 to a

    different drive doesn't leave enough room on C: to run the upgrader.)

    When installing on EC2, it seems their 2003 Server comes with a Visual

    Studio key already supplied. There is also the possibility of using Visual

    Studio Express Edition, but it is currently unable to compile TortoiseBzr.

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