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Python 2.7.7 is giving Visual C++ issues when installing a package. I get the following error:

error: Setup script exited with error: command 'C:\\Program Files\\Common Files\
    \Microsoft\\Visual C++ for Python\\9.0\\VC\\Bin\\cl.exe' failed with exit status
     2*
  1. I am on Windows Vista, Python 2.7.7
  2. I installed the package via the Windows cmd terminal, using "setup.py install"
  3. I have installed "Microsoft Visual C++ Compiler for Python 2.7" and ensured the path "C:\Program Files\Common Files\Microsoft\Visual C++ for Python\9.0\VC\Bin\cl.exe" contains "cl.exe"
  4. As per the advice here. I have checked that my Visual C++ version is compatible with my version of Python. (I have a "Visual C++ 2008 32-bit Command Prompt" shortcut at "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Microsoft Visual C++ Compiler Package for Python 2.7". The 2008 version is the correct version for my version of python. (both are MSC v.1500.) )
  5. I have updated python setuptools to setuptools 17.1.1

Below is a transcript of the installation process just before the error occured:

Searching for python-axolotl-curve25519
Reading https://pypi.python.org/simple/python-axolotl-curve25519/
Best match: python-axolotl-curve25519 0.1
Downloading https://pypi.python.org/packages/source/p/python-axolotl-curve25519/
python-axolotl-curve25519-0.1.tar.gz#md5=f28d902df9044f0bf86a35a4bd2ec092
Processing python-axolotl-curve25519-0.1.tar.gz
Writing c:\users\eg\appdata\local\temp\easy_install-l68mxp\python-axolotl-curve2
5519-0.1\setup.cfg
Running python-axolotl-curve25519-0.1\setup.py -q bdist_egg --dist-dir c:\users\
eg\appdata\local\temp\easy_install-l68mxp\python-axolotl-curve25519-0.1\egg-dist
-tmp-hvxf2n
curve25519module.c
curve25519module.c(76) : error C2143: syntax error : missing ';' before 'type'
curve25519module.c(78) : error C2065: 'result' : undeclared identifier
curve25519module.c(82) : error C2143: syntax error : missing '{' before '*'
curve25519module.c(100) : warning C4133: 'return' : incompatible types - from 'P
yObject *' to 'int *'
curve25519module.c(146) : warning C4133: 'initializing' : incompatible types - f
rom 'int *(__cdecl *)(PyObject *,PyObject *)' to 'PyCFunction'
**error: Setup script exited with error: command 'C:\\Program Files\\Common Files\
\Microsoft\\Visual C++ for Python\\9.0\\VC\\Bin\\cl.exe' failed with exit status
 2**

I am new to this and have no idea what else to try. Would appreciate any help. Thanks in advance.

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  • 1
    The python-axolotl-curve package looks like it requires the gcc compiler in the mingw GNU development environment. The instructions for installing it on Windows specifically say to install and use it. This compiler is also compatible with the version of Python you're using. Commented Jun 20, 2015 at 23:58
  • The instructions for installing it on windows says to install zlib. I downloaded zlib-1.2.8 and unzipped it but there is no setup.py file. Any idea how i can get it installed? I have completed the instructions up to that point, including nstall gcc: mingw-get.exe install gcc with no issues Commented Jun 21, 2015 at 6:05
  • I have completed the installation of zlib via "mingw-get.exe install zlib" (silly me!) with no issues. However I am getting the same error when i do "python setup.py install" on the "python-axolotl-0.1.7" package. (Again, the setup process will search for python-axolotl-curve25519, and the exact same code as above is repeated.) I tried downloading python-axolotl-curve25519 to install it as well and also got the exact same process and error. Commented Jun 21, 2015 at 6:57
  • If you're getting the same error from the gcc compiler, it sounds like there's something wrong with the source code itself. You might be able to find a pre-built version of the extension somewhere. Python Extension Packages for Windows by Christoph Gohlke is usually an good source of these, but the website appears to be down at the moment. Commented Jun 21, 2015 at 7:15
  • I read here (github.com/tgalal/yowsup/issues/500) that the correct axolotl package to use is 0.1.5. downloaded and tried that as well. Same issue Commented Jun 21, 2015 at 7:47

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Came across this issue when installing pycocotools on windows 10. Python 2.7 does not support Visual C++ 14 that is required to compile C99 code. This is the reason for the compiling errors (C2065,C4133 etc).

I was able to solve this by,

  1. Installing Visual Studio 2015 build tools (this will install C++ 14 compiler).
  2. Installing a new newer version of Python (3.6 recommended)

More about Windows Compilers for Python here. Also check this post.

enter image description here

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