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\nt.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

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.win32-py2.7.exe

Credits and References to this post:

http://nukeit.org/compile-python-2-7-packages-with-visual-studio-2010-express/
http://yorickdowne.wordpress.com/2010/12/22/compiling-pycrypto-on-win7-64/
http://www.lfd.uci.edu/~gohlke/pythonlibs/
http://www.fuyun.org/2009/12/install-mysql-for-python-on-windows/
http://mattptr.net/2010/07/28/building-python-extensions-in-a-modern-windows-environment/

Good Bye.
Victor Jabur

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

  1. Federico V says:

    Hi Victor,

    thanks for the helpful blog, I tried to follow a few of your suggestions, but ran into some issues. I tried to compile the mpi4py package on windows, and got the following error:

    C:\TEMP\mpi4py-1.2.2>python setup.py build –compiler msvc
    running build
    running build_py
    running build_ext
    MPI configuration: directory ‘C:\Program Files\MPICH2′
    MPI C compiler: not found
    MPI C++ compiler: not found
    MPI linker: not found
    checking for MPI compile and link …
    Traceback (most recent call last):
    File “setup.py”, line 316, in
    main()
    File “setup.py”, line 306, in main
    run_setup()
    File “setup.py”, line 279, in run_setup
    **metadata)
    File “C:\TEMP\mpi4py-1.2.2\conf\mpidistutils.py”, line 694, in setup
    return fcn_setup(**attrs)
    File “C:\Python27\lib\distutils\core.py”, line 152, in setup
    dist.run_commands()
    File “C:\Python27\lib\distutils\dist.py”, line 953, in run_commands
    self.run_command(cmd)
    File “C:\Python27\lib\distutils\dist.py”, line 972, in run_command
    cmd_obj.run()
    File “C:\Python27\lib\distutils\command\build.py”, line 127, in run
    self.run_command(cmd_name)
    File “C:\Python27\lib\distutils\cmd.py”, line 326, in run_command
    self.distribution.run_command(command)
    File “C:\Python27\lib\distutils\dist.py”, line 972, in run_command
    cmd_obj.run()
    File “C:\Python27\lib\distutils\command\build_ext.py”, line 340, in run
    self.build_extensions()
    File “C:\TEMP\mpi4py-1.2.2\conf\mpidistutils.py”, line 1188, in build_extensio
    ns
    self.config_extension(ext, config_info)
    File “C:\TEMP\mpi4py-1.2.2\conf\mpidistutils.py”, line 1215, in config_extensi
    on
    headers=[‘stdlib.h’, ‘mpi.h’])
    File “C:\Python27\lib\distutils\command\config.py”, line 251, in try_link
    libraries, library_dirs, lang)
    File “C:\Python27\lib\distutils\command\config.py”, line 143, in _link
    (src, obj) = self._compile(body, headers, include_dirs, lang)
    File “C:\Python27\lib\distutils\command\config.py”, line 138, in _compile
    self.compiler.compile([src], include_dirs=include_dirs)
    File “C:\Python27\lib\distutils\msvc9compiler.py”, line 478, in compile
    self.initialize()
    File “C:\Python27\lib\distutils\msvc9compiler.py”, line 388, in initialize
    vc_env = query_vcvarsall(VERSION, plat_spec)
    File “C:\Python27\lib\distutils\msvc9compiler.py”, line 304, in query_vcvarsal
    l
    raise ValueError(str(list(result.keys())))
    ValueError: [u’path’]

    C:\TEMP\mpi4py-1.2.2>

    After digging into query_vcvarsal it seems that the problem is that after looking through the path variables, the python cannot find any entries for:

    interesting = set((“include”, “lib”, “libpath”))

    Do I need to manually create more variables?

  2. Pingback: Compiling MySQLdb 1.2.3 on Windows 32 and 64 – Without need the MySQL Database 5.5 installed « Victor Jabur's Blog

  3. Federico V says:

    Hi Victor,

    do you have an email address where I could contact you further? I followed all the steps but I think there is a path variable that is missing somewhere.

    Thank you very much for the pre-compiled file though,

    Federico

  4. Barry Comer says:

    When I follow the steps above for 64-bit Windows 7 I get the following error:

    running build
    running build_py
    running build_ext
    warning: GMP library not found; Not building Crypto.PublicKey._fastmath.
    building ‘Crypto.Random.OSRNG.winrandom’ extension
    Traceback (most recent call last):
    File “setup.py”, line 340, in
    core.setup(**kw)
    File “C:\Python27\lib\distutils\core.py”, line 152, in setup
    dist.run_commands()
    File “C:\Python27\lib\distutils\dist.py”, line 953, in run_commands
    self.run_command(cmd)
    File “C:\Python27\lib\distutils\dist.py”, line 972, in run_command
    cmd_obj.run()
    File “C:\Python27\lib\distutils\command\build.py”, line 127, in run
    self.run_command(cmd_name)
    File “C:\Python27\lib\distutils\cmd.py”, line 326, in run_command
    self.distribution.run_command(command)
    File “C:\Python27\lib\distutils\dist.py”, line 972, in run_command
    cmd_obj.run()
    File “C:\Python27\lib\distutils\command\build_ext.py”, line 340, in run
    self.build_extensions()
    File “setup.py”, line 152, in build_extensions
    build_ext.build_extensions(self)
    File “C:\Python27\lib\distutils\command\build_ext.py”, line 449, in build_extensions
    self.build_extension(ext)
    File “C:\Python27\lib\distutils\command\build_ext.py”, line 499, in build_extension
    depends=ext.depends)
    File “C:\Python27\lib\distutils\msvc9compiler.py”, line 473, in compile
    self.initialize()
    File “C:\Python27\lib\distutils\msvc9compiler.py”, line 383, in initialize
    vc_env = query_vcvarsall(VERSION, plat_spec)
    File “C:\Python27\lib\distutils\msvc9compiler.py”, line 299, in query_vcvarsall
    raise ValueError(str(list(result.keys())))
    ValueError: [u’path’]

    Any thoughts?

    • Tai says:

      Check if you have copied bin\vcvars64.bat into bin\amd64 and renamed it vcvarsamd64.bat
      I had the same error message and renaming was the step I forgot to do.

  5. Thanks man, I’ve been hacking around trying to figure this one out for a while. It worked like a champ.

  6. Juergen W says:

    Hi Victor,
    thank you for your helpful blog entry.
    It helped me to compile PIL on Windows 7 64 bit.

  7. Marc-Arthur Pierre-Louis says:

    Hi, thanks for your precise instructions that helped me compile pycrypto on 64-bit. It was a frustrating process with all the other instructions on the Internet. Your blog was a night and day difference. Keep up the good work! Excellent!

  8. Thanks a lot for this!

  9. Dewald says:

    Thank you very much! This helped me compile pybluez for python 2.7 on W7. Thanks!

  10. Tai says:

    Thanks Victor for your very precise tutorial. It saved me a lot of time and frustration when installing python packages that requires compilation. Keep up the good work!

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  12. ravi says:

    i also tried following the above steps for installing rpy2 in windows7 64 bit but it is giving below error message. Victor it would be nice if you can check:

    C:\Program Files\Microsoft SDKs\Windows\v7.0\include\ws2def.h(961) : warning C4068: unknown pragma
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\embeddedr.h(6) : warning C4114: same type qualifier used more than once
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\embeddedr.h(7) : warning C4114: same type qualifier used more than once
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\embeddedr.h(22) : error C2054: expected ‘(‘ to follow ‘inline’
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\embeddedr.h(22) : error C2085: ‘Rpy_ReplaceSexp’ : not in formal parameter list
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\na_values.h(8) : error C2085: ‘NAInteger_Type’ : not in formal parameter list
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\na_values.h(9) : error C2085: ‘NAReal_Type’ : not in formal parameter list
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\na_values.h(10) : error C2085: ‘NAComplex_Type’ : not in formal parameter list
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\na_values.h(11) : error C2085: ‘NALogical_Type’ : not in formal parameter list
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\na_values.h(12) : error C2085: ‘NACharacter_Type’ : not in formal parameter list
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\na_values.h(17) : error C2057: expected constant expression
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\na_values.h(18) : error C2085: ‘ieee_double’ : not in formal parameter list
    c:\users\art\desktop\start\rpy2\rpy2-2.3.1\rpy2-2.3.1\rpy\rinterface\na_values.h(23) : error C2085: ‘ieee_double’ : not in formal parameter list
    error: command ‘”C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\amd64\cl.exe”‘ failed with exit status 2

  13. Maurice says:

    I am trying to compile pylibdnet for Windows because the last Windows installer for libdnet was published in 2009 for Python 2.4. I have followed your instructions for 32 bit Windows and I obtain the error message:

    Could not locate the include file “libnet.h”

    There is not an include folder with my pylibnet package where I might expect to find libnet.h, but there is also not an include folder with your pycrypto-2.6 package, and yet you compiled it successfully. Can you explain what I am doing wrong?

    I also have an up to date version of libnet for developers and I wondered if someone could advise me on how to compile that from source bearing in mind that I am a clueless Windows user.

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  15. Man It is showing unexpected indent :
    ld_args.append(‘/MANIFEST’) I did all the above steps for 32 bit

  16. Zive says:

    Hi, I am new to Python and I am trying to learn and compile C/C++ on Windows 7 x64 to make a Python 2.7 x32 Audio Extension https://code.google.com/p/py-audio/. I tried to compile the *.pyd on Windows 7 x64 over a month without any success.
    I would very much appreciate any help.

  17. systhinking says:

    Hi Victer, I followed your instruction step by step but it hang at python setup,py install.

  18. M says:

    Thanks, Victor! This worked great – I was at a loss after hours of internet searching and trying various solutions, but none worked until I found your blog. Awesome!

  19. Maor says:

    Hi Victor,

    I’m getting the same issue as Ravi.

    C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\BIN\x86_amd64\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG “-Ic:\Program Files\Python27\include” “-Ic:\Program Files\Python27\PC” /Tcenhsocket.c /Fobuild\temp.win-amd64-2.7\Release\enhsocket.obj
    enhsocket.c
    c:\program files\python27\include\pymath.h(22) : warning C4273: ’round’ : inconsistent dll linkage
    C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\math.h(516) : see previous definition of ’round’
    c:\program files\python27\include\modules\socketmodule.h(1) : error C2061: syntax error : identifier ‘module’
    c:\program files\python27\include\modules\socketmodule.h(1) : error C2059: syntax error : ‘;’
    c:\program files\python27\include\modules\socketmodule.h(1) : error C2061: syntax error : identifier ‘file’
    c:\program files\python27\include\modules\socketmodule.h(1) : warning C4138: ‘*/’ found outside of comment
    c:\program files\python27\include\modules\socketmodule.h(1) : error C2059: syntax error : ‘/’
    C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\excpt.h(73) : error C2061: syntax error : identifier ‘__C_specific_handler’
    C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\excpt.h(73) : error C2059: syntax error : ‘;’
    C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\excpt.h(74) : error C2059: syntax error : ‘type’
    C:\Program Files (x86)\Windows Kits\8.1\include\um\winnt.h(1308) : error C2143: syntax error : missing ‘{‘ before ‘__cdecl’
    C:\Program Files (x86)\Windows Kits\8.1\include\um\winnt.h(1316) : error C2143: syntax error : missing ‘{‘ before ‘*’
    C:\Program Files (x86)\Windows Kits\8.1\include\um\winnt.h(3755) : error C2061: syntax error : identifier ‘PEXCEPTION_ROUTINE’
    C:\Program Files (x86)\Windows Kits\8.1\include\um\winnt.h(3760) : error C2059: syntax error : ‘}’
    C:\Program Files (x86)\Windows Kits\8.1\include\um\winnt.h(11359) : error C2061: syntax error : identifier ‘PEXCEPTION_ROUTINE’
    C:\Program Files (x86)\Windows Kits\8.1\include\um\winnt.h(11360) : error C2059: syntax error : ‘}’
    C:\Program Files (x86)\Windows Kits\8.1\include\um\winnt.h(11362) : error C2143: syntax error : missing ‘{‘ before ‘*’
    C:\Program Files (x86)\Windows Kits\8.1\include\um\winnt.h(17086) : error C2143: syntax error : missing ‘{‘ before ‘__cdecl’
    enhsocket.c(369) : warning C4005: ‘EAFNOSUPPORT’ : macro redefinition
    C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\INCLUDE\errno.h(94) : see previous definition of ‘EAFNOSUPPORT’
    enhsocket.c(704) : warning C4244: ‘function’ : conversion from ‘SOCKET_T’ to ‘int’, possible loss of data
    enhsocket.c(706) : warning C4244: ‘function’ : conversion from ‘SOCKET_T’ to ‘int’, possible loss of data
    enhsocket.c(1666) : warning C4244: ‘function’ : conversion from ‘SOCKET_T’ to ‘int’, possible loss of data
    enhsocket.c(1978) : warning C4244: ‘function’ : conversion from ‘SOCKET_T’ to ‘int’, possible loss of data
    enhsocket.c(2174) : warning C4244: ‘function’ : conversion from ‘SOCKET_T’ to ‘int’, possible loss of data
    enhsocket.c(2203) : warning C4244: ‘function’ : conversion from ‘SOCKET_T’ to ‘int’, possible loss of data
    enhsocket.c(2470) : warning C4244: ‘=’ : conversion from ‘Py_ssize_t’ to ‘int’, possible loss of data
    enhsocket.c(2565) : warning C4244: ‘function’ : conversion from ‘SOCKET_T’ to ‘int’, possible loss of data
    enhsocket.c(2642) : warning C4244: ‘=’ : conversion from ‘Py_ssize_t’ to ‘int’, possible loss of data
    enhsocket.c(2695) : warning C4244: ‘=’ : conversion from ‘Py_ssize_t’ to ‘int’, possible loss of data
    enhsocket.c(2738) : warning C4244: ‘=’ : conversion from ‘Py_ssize_t’ to ‘int’, possible loss of data
    enhsocket.c(2832) : warning C4244: ‘function’ : conversion from ‘Py_ssize_t’ to ‘int’, possible loss of data
    enhsocket.c(4086) : warning C4267: ‘function’ : conversion from ‘size_t’ to ‘int’, possible loss of data
    enhsocket.c(4185) : warning C4267: ‘function’ : conversion from ‘size_t’ to ‘socklen_t’, possible loss of data
    error: command ‘”C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\BIN\x86_amd64\cl.exe”‘ failed with exit status 2

    C:\Program Files\Python27\include\Modules>

    Is there any suggestion for this?

    Thank you very much!

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  23. Ben Hoyt says:

    Just wanted to say a huge thank you for this walkthrough. Would have taken a long time to figure out these steps myself. Any idea why those changes to the .py files aren’t fixed in Python?

  24. Peter says:

    Thank you so much. I was trying to get cython working with ipython on X64 and your instructions did me fine. Very clearly laid out. Saved me a lot of time.
    Peter

  25. victorjabur says:

    I will see. Thanks

    • Ben says:

      Victor, note that the above two comments are total blog spam. You can delete/spam them (and this one too :-). -Ben

  26. nacho says:

    Hello Victor, i followed every single step, i´m trying to install HIREDIS, and i´m getting this error when i´m trying the “build –compiler msvc” part:
    vendor/hiredis/hiredis.c(35) = fatal error C1003: Cannot open include file: ‘unistd.h': No suh file or directory.
    error: command C:\Program FIles (x86)\Microsoft Visual Studio 9.0\VC\BIN\cl.exe” failed with exit status 2.
    Any idea why is this happenning?

    Thanks

  27. Jeremy says:

    Another thank you from me – I used your instructions to get psycopg2 building locally on Windows 8.1 for an app which is hosted on Heroku. It’s a pity these steps aren’t included in their documentation, but your write-up saved me a lot of trouble. Great work for a blog post written three years ago!

  28. Pingback: How to: error: Unable to find vcvarsall.bat | SevenNet

  29. Pingback: Solution: error: Unable to find vcvarsall.bat #dev #it #computers | Technical information for you

  30. Pingback: Fixed error: Unable to find vcvarsall.bat #dev #it #asnwer | Good Answer

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