1 Building pyOpenSSL on Windows
2 =============================
4 This document details the steps to build an pyOpenSSL egg with embedded
5 OpenSSL library, for use by Tahoe-LAFS on Windows.
7 The instructions were tried on Windows 7 64-bit and Windows XP 32-bit.
8 They should work on other versions of Windows, maybe with minor variations.
11 Download and install Microsoft Visual C++ compiler for Python 2.7
12 -----------------------------------------------------------------
14 For reasons detailed in `the Python documentation`_, Python extension modules
15 need to be built using a compiler compatible with the same version of Visual C++
16 that was used to build Python itself. Until recently, this meant downloading
17 Microsoft Visual Studio 2008 Express Edition and Windows SDK 3.5. The recent
18 release of the Microsoft Visual C++ compiler for Python 2.7 made things a lot
21 So, the first step is to download and install the C++ compiler from Microsoft
24 Find the location where it installed the ``vcvarsall.bat`` file; depending on
25 the version of Windows it could be either
26 ``"%USERPROFILE%\AppData\Local\Programs\Common\Microsoft\Visual C++ for Python\9.0"``
27 or ``"%CommonProgramFiles%\Microsoft\Visual C++ for Python\9.0"``, for example.
28 We'll call this ``%VCDIR%`` below.
30 .. _the Python documentation: https://docs.python.org/2/extending/windows.html
31 .. _this link: https://www.microsoft.com/en-us/download/details.aspx?id=44266
34 Download and install Perl
35 -------------------------
37 Download and install ActiveState Perl:
39 * go to `the ActiveState Perl download page`_.
40 * identify the correct link and manually change it from http to https.
42 .. _the ActiveState Perl download page: https://www.activestate.com/activeperl/downloads
45 Download and install the latest OpenSSL version
46 -----------------------------------------------
48 * Download the latest OpenSSL from `the OpenSSL source download page`_ and untar it.
49 At the time of writing, the latest version was OpenSSL 1.0.1m.
51 * Set up the build environment. For 64-bit Windows::
53 "%VCDIR%\vcvarsall.bat" amd64
55 or for 32-bit Windows::
57 "%VCDIR%\vcvarsall.bat" x86
59 * Go to the untar'ed OpenSSL source base directory. For 64-bit Windows, run::
62 perl Configure VC-WIN64A --prefix=c:\dist\openssl no-asm enable-tlsext
65 nmake -f ms\ntdll.mak install
67 or for 32-bit Windows, run::
70 perl Configure VC-WIN32 --prefix=c:\dist\openssl no-asm enable-tlsext
73 nmake -f ms\ntdll.mak install
76 To check that it is working, run ``c:\dist\openssl\bin\openssl version``.
78 .. _the OpenSSL source download page: https://www.openssl.org/source/
84 * Download and untar pyOpenSSL 0.13.1 (see `ticket #2221`_ for why we
85 currently use this version). The MD5 hash of pyOpenSSL-0.13.1.tar.gz is
86 e27a3b76734c39ea03952ca94cc56715.
88 * Set up the build environment by running ``vcvarsall.bat`` as for building
91 * Set OpenSSL ``LIB``, ``INCLUDE`` and ``PATH``::
93 set LIB=c:\dist\openssl\lib;%LIB%
94 set INCLUDE=c:\dist\openssl\include;%INCLUDE%
95 set PATH=c:\dist\openssl\bin;%PATH%
97 * A workaround is needed to ensure that the setuptools ``bdist_egg`` command
98 is available. Edit pyOpenSSL's ``setup.py`` around line 13 as follows::
100 < from distutils.core import Extension, setup
102 > from setuptools import setup
103 > from distutils.core import Extension
105 * Run ``python setup.py bdist_egg``
107 The generated egg will be in the ``dist`` directory. It is a good idea
108 to check that Tahoe-LAFS is able to use it before uploading the egg to
109 tahoe-lafs.org. This can be done by putting it in the ``tahoe-deps`` directory
110 of a Tahoe-LAFS checkout or release, then running ``python setup.py test``.
112 .. _ticket #2221: https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2221