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Compiling Python 2.7 Modules on Windows 32 and 64 using MSVC++ 2008 Express

Hello,
On this post i will explain how to build, compile, install and distribute python modules on Windows using Microsoft Visual C++ Express Edition. This post will be constantly updated to cover future updates of python, windows and msvc++ versions.
For this example i will use the PyCrypto – http://pycrypto.org because this is an example that don’t have packages for windows x64 on the web.
Observation: Don’t use Microsoft Visual C++ Express Edition 2010 to build python modules, because this will not work due to Python 2.7 was built using the 2008 version. This is an error that occurs when you try to build PyCrypto and Paramiko using the 2010 version and execute the import module:

>>> import paramiko
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\lib\site-packages\paramiko\__init__.py", line 69, in <module>
    from transport import SecurityOptions, Transport
  File "C:\Python27\lib\site-packages\paramiko\transport.py", line 32, in <module>
    from paramiko import util
  File "C:\Python27\lib\site-packages\paramiko\util.py", line 32, in <module>
    from paramiko.common import *
  File "C:\Python27\lib\site-packages\paramiko\common.py", line 98, in <module>
    from Crypto import Random
  File "C:\Python27\lib\site-packages\Crypto\Random\__init__.py", line 28, in <module>
    import OSRNG
  File "C:\Python27\lib\site-packages\Crypto\Random\OSRNG\__init__.py", line 34, in <module>
    from Crypto.Random.OSRNG.nt import new
  File "C:\Python27\lib\site-packages\Crypto\Random\OSRNG
t.py", line 28, in <module>
    import winrandom
ImportError: DLL load failed: The specified module could not be found.

1 – Building and Installing PyCrypto Module for Windows 7 64 bits:
1.1 - You must have installed the Python 64 bits version: http://www.python.org/ftp/python/2.7.1/python-2.7.1.amd64.msi
1.2 - You should install the C Compiler for Windows – Microsoft Visual C++ Express Edition 2008 : available here: http://www.microsoft.com/express/Downloads/#Visual_Studio_2008_Express_Downloads
ISO File to Download: http://www.microsoft.com/express/Downloads/#2008-All
1.3 - You should install the Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 SP1 : available here: http://www.microsoft.com/downloads/en/details.aspx?FamilyID=c17ba869-9671-4330-a63e-1fd44e0e2505
ISO File To Download (64 bits): http://download.microsoft.com/download/2/E/9/2E911956-F90F-4BFB-8231-E292A7B6F287/GRMSDKX_EN_DVD.iso
This is required because the Express Edition 2008 C++ don’t contains the 64 bits compiler. This is required only for Windows 7 64 bits version.
Important: Don’t use the “Microsoft Windows SDK for Windows 7 and .NET Framework 4″ because it’s not compatible with msvc++ express 2008 edition.
1.4 - Install the Python Setup Tools available here: http://pypi.python.org/pypi/setuptools#downloads
1.5 - Include in your Advanced Variables Environment the binaries of Python. Right click at “My Computer” icon -> Properties -> Advanced Environment and edit your Path Variable including this two directories there: Path = C:\Python27\Scripts;C:\Python27; + Path

1) C:\Python27\Scripts
2) C:\Python27

1.6 - Copy this file:

C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\bin\vcvars64.bat

To this follow folder and rename the file (vcvars64.bat to vcvarsamd64.bat):

C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\bin\amd64\vcvarsamd64.bat

1.7 - Edit the file msvc9compiler.py inside of directory C:\Python27\Lib\distutils\msvc9compiler.py
After the line 651 approximately, find this line: – ld_args.append(‘/MANIFESTFILE:’ + temp_manifest) Add the following line after the above line:

ld_args.append('/MANIFEST')

1.8 - Edit the file msvccompiler.py inside of directory C:\Python27\Lib\distutils\msvccompiler.py
At line 153 approximately, insert this line: return 9.0 , as following, in this piece of code:

def get_build_version():
    """Return the version of MSVC that was used to build Python.

    For Python 2.3 and up, the version number is included in
    sys.version.  For earlier versions, assume the compiler is MSVC 6.
    """
    return 9.0
    prefix = "MSC v."
    i = string.find(sys.version, prefix)
    if i == -1:
        return 6

1.9 - Certify that exists the follow environment variable in your system, if don’t exist create a new one:

Name: VS90COMNTOOLS
Value: C:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\Tools\

1.10 - Extract the file pycrypto-2.3.tar.gz that you downloaded before, open a dos command and access the pycrypto-2.3 folder
1.11 - Execute this command to compile, build and install the module:

python setup.py build --compiler msvc
python setup.py install

1.12 - Test if the package was generated successfully executing an import Crypto at Python shell.
1.13 - It’s finish. Optionally, you can distribute your compiled modules as an windows executable (.exe) file, executing this simple command on folder of your module, this case is pycrypto-2.3:

python setup.py bdist_wininst

As a result you will get a executable file with graphical interface created inside of folder “dist” and other people can install this executable file without to prepare a complex environment for build your own module. This is my result file of this process. http://arquivos.victorjabur.com/python/modules/pycrypto-2.3.win-amd64-py2.7.exe
2 – Building and Installing PyCrypto Module for Windows All Versions 32 bits:
2.1 - You must have installed the Python 32 bits version: http://www.python.org/ftp/python/2.7.1/python-2.7.1.msi
2.2 - You should install the C Compiler for Windows – Microsoft Visual C++ Express Edition 2008 : available here: http://www.microsoft.com/express/Downloads/#Visual_Studio_2008_Express_Downloads
ISO File to Download: http://www.microsoft.com/express/Downloads/#2008-All
2.3 - Install the Python Setup Tools available here: http://pypi.python.org/pypi/setuptools#downloads
2.4 - Include in your Advanced Variables Environment the binaries of Python. Right click at “My Computer” icon -> Properties -> Advanced Environment and edit your Path Variable including this two directories there: Path = C:\Python27\Scripts;C:\Python27; + Path

1) C:\Python27\Scripts
2) C:\Python27

2.5 - Edit the file msvc9compiler.py inside of directory C:\Python27\Lib\distutils\msvc9compiler.py
After the line 651 approximately, find this line: – ld_args.append(‘/MANIFESTFILE:’ + temp_manifest) Add the following line after the above line:

ld_args.append('/MANIFEST')

2.6 - Edit the file msvccompiler.py inside of directory C:\Python27\Lib\distutils\msvccompiler.py
At line 153 approximately, insert this line: return 9.0 , as following, in this piece of code:

def get_build_version():
    """Return the version of MSVC that was used to build Python.

    For Python 2.3 and up, the version number is included in
    sys.version.  For earlier versions, assume the compiler is MSVC 6.
    """
    return 9.0
    prefix = "MSC v."
    i = string.find(sys.version, prefix)
    if i == -1:
        return 6

2.7 - Certify that exists the follow environment variable in your system, if don’t exist create a new one:

Name: VS90COMNTOOLS
Value: C:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\Tools\

2.8 - Extract the file pycrypto-2.3.tar.gz that you downloaded before, open a dos command and access the pycrypto-2.3 folder
2.9 - Execute this command to compile, build and install the module:

python setup.py build --compiler msvc
python setup.py install

2.10 - Test if the package was generated successfully executing an import Crypto at Python shell.
2.11 - It’s finish. Optionally, you can distribute your compiled modules as an windows executable (.exe) file, executing this simple command on folder of your module, this case is pycrypto-2.3:

python setup.py bdist_wininst

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