import os
import sys

from distutils.core import setup
from distutils.extension import Extension
from Cython.Build import cythonize


# For demo purposes, we build our own tiny library.
try:
    print "building libmymath.a"
    assert os.system("gcc -shared -fPIC -c mymath.c -o mymath.o") == 0
    assert os.system("ar rcs libmymath.a mymath.o") == 0
except:
    if not os.path.exists("libmymath.a"):
        print("Error building external library, please create libmymath.a manually.")
        sys.exit(1)

# Here is how to use the library built above. 
ext_modules = cythonize([
    Extension("call_mymath",
              sources=["call_mymath.pyx"],
              include_dirs=[os.getcwd()],  # path to .h file(s)
              library_dirs=[os.getcwd()],  # path to .a or .so file(s)
              libraries=['mymath'])
])

setup(
    name='Demos',
    ext_modules=ext_modules,
)