Cython and distutils

Question

I want to use Cython to convert multiple .pyx files into an executable package (.DLL). How do I create a single Windows DLL from multiple .pyx via distutils? Sample used: sub1.pyx: ``` cimport sub1 class A(): def test(self, val): print "A", val ``` sub1.pxd: ``` cdef class A: cpdef test(self,val) ``` sub2.pyx: ``` cimport sub2 class B(): def test(self): return 5 ``` sub2.pxd: ``` cdef class B: cpdef test(self) ``` init.py: ``` cimport sub1 cimport sub2 import sub1 import sub2 ``` setup.py: ``` from distutils.core import setup from distutils.extension import Extension from Cython.Distutils import build_ext ext_modules = [Extension("sub", ["__init__.pyx", "sub1.pyx", "sub2.pyx"])] setup( name = 'Hello world app', cmdclass = {'build_ext': build_ext}, ext_modules = ext_modules ) ``` Error: ``` sub1.obj : error LNK2005: ___pyx_module_is_main_sub already defined in __init__.obj sub1.obj : error LNK2005: _initsub already defined in __init__.obj sub2.obj : error LNK2005: ___pyx_module_is_main…

Accepted Answer

I was not aware of this :

http://groups.google.com/group/cython-users/browse_thread/thread/cbacb7e848aeec31

I report the answer of one of the main coders (Lisandro Dalcin) of cython (sorry for cross posting):

```
ext_modules=[ 
    Extension("myModule", 
              sources=['src/MyFile1.pyx', 
                       'src/MyFile2.pyx'], 
```

You cannot have a single "myModule" built from two different sources. Perhaps you could add a "src/myModule.pyx" file, with the two lines below:

```
# file: myModule.pyx 
include "MyFile1.pyx" 
include "MyFile2.pyx" 
```

and then use

```
Extension("myModule", sources=['src/myModule.pyx'], ...) 
```

Cython and distutils

Solution

Problem