Compiling C code to dll

Look at the sample.c and sample.h files for C code and header, respectively.

put mingw64\bin\ folder into path and compile it with:



In [1]:

    
!!gcc -c sample.c









    Out[1]:





[]



In [2]:

    
!!gcc -shared -o sample.dll sample.o -Wl,--out-implib,libsample.a









    Out[2]:





[]

Wrapping into py 3.4



In [3]:

    
import ctypes



In [4]:

    
ctypes.util.find_library('sample.o')









    Out[4]:





'sample.o'

Load the dll:



In [5]:

    
_mod = ctypes.cdll.LoadLibrary('sample')

Define a wrapper to the dll function



In [6]:

    
in_mandel = _mod.in_mandel
in_mandel.argtypes = (ctypes.c_double, ctypes.c_double, ctypes.c_int)
in_mandel.restype = ctypes.c_int

Use it:



In [7]:

    
in_mandel(1., 4., 1)









    Out[7]:





5

For more functions look at the sample.py.

A good reference used for this notebook is:

from the python cookbook:

For a MS Visual C++ compiler setup see: