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I upgraded cython to 0.20 via pip install --upgrade cython. Before it was just working fine. Then I couldn't compile anymore. Then I tried to uninstall an reinstall an got this Unable to find vcvarsall.bat error which wasn't there when installing cython 0.19...Come to think about it, 0.19 was installed with python(x, y) installation.

C:\>gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=c:/mingw32-xy/bin/../libexec/gcc/mingw32/4.5.2/lto-wrapper.e
xe
Target: mingw32
Configured with: ../gcc-4.5.2/configure --enable-languages=c,c++,ada,fortran,obj
c,obj-c++ --disable-sjlj-exceptions --with-dwarf2 --enable-shared --enable-libgo
mp --disable-win32-registry --enable-libstdcxx-debug --enable-version-specific-r
untime-libs --disable-werror --build=mingw32 --prefix=/mingw
Thread model: win32
gcc version 4.5.2 (GCC)
C:\>ver

Microsoft Windows [Version 6.1.7601]
C:\>python
Python 2.7.5 (default, May 15 2013, 22:43:36) [MSC v.1500 32 bit (Intel)] on win
32

I followed the instructions here, but not luck. Any ideas? Any more info I can provide?

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embert
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  • possible duplicate of [Cython install problem](http://stackoverflow.com/questions/7255390/cython-install-problem) – Leeor Jan 25 '14 at 14:28

2 Answers2

1

Well, I got this working using a prebuild version from here as recommended by tom pohl here

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embert
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0

In this case pip tries to compile cython with visual studio compiler (hence vcvarsall.bat error). To compile extensions for Python 2.7 (32-bit) using visual studio compiler you'll need to have Visual C++ 2008 Express installed.

But if one day you discover, that you'd like to build cython from source, then check out "How to use MinGW's gcc compiler when installing Python package using Pip?"

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iljau
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