Question

I’m trying to install Theano on Enthought Python Distribution (EPD), but I am getting a weird error. Here is what my installation looks like:

• I have installed EPD to C:\Python27.
• After that, I have installed pip by using easy_install pip
• I installed Theano by using pip install Theano

• To test, I start ipython and type import theano. I get the following error:

  Problem occurred during compilation with the command line below:
  g++ -shared -g -IC:\Python27\lib\site-packages\numpy\core\include -IC:\Python27\include -o C:\Users\Ove\AppData\Local\Theano\compiledir_Windows-7-6.1.7601-SP1-Intel64_Family_6_Model_37_Stepping_5_GenuineIntel-2.7.2\lazylinker_ext\lazylinker_ext.pyd C:\Users\Ove\AppData\Local\Theano\compiledir_Windows-7-6.1.7601-SP1-Intel64_Family_6_Model_37_Stepping_5_GenuineIntel-2.7.2\lazylinker_ext\mod.cpp -LC:\Python27\libs -LC:\Python27 -lpython27
  C:\Users\Ove\AppData\Local\Temp\ccIoNPlU.o: In function `initlazylinker_ext':C:/Users/Ove/AppData/Local/Theano/compiledir_Windows-7-6.1.7601-SP1-Intel64_Family_6_Model_37_Stepping_5_GenuineIntel-2.7.2/lazylinker_ext/mod.cpp:911: undefined reference to `__imp_Py_InitModule4'
  collect2: ld returned 1 exit status
  
  Exception: Compilation failed (return status=1): C:\Users\Ove\AppData\Local\Temp. C:/Users/Ove/AppData/Local/Theano/compiledir_Windows-7-6.1.7601-SP1-Intel64_Family_6_Model_37_Stepping_5_GenuineIntel-2.7.2/lazylinker_ext/mod.cpp:911: undefi. collect2: ld returned 1 exit status4'
  

Does anyone know how to get Theano to run with EPD?

Answer 1

The last release of Theano(0.5) has some problem on Windows. You need to install the bleeding edge version. You can update your version like this:

pip install --upgrade --no-deps git+git://github.com/Theano/Theano.git

This should solve the problem. If not, you probably have some conflict with a different installation of gcc. Do you have installed it with cygwin or mingw? EPD installs its own version of mingw.