import os

from distutils.core import setup
from distutils.extension import Extension
from Cython.Distutils import build_ext


# 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=[ 
    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',
  cmdclass = {'build_ext': build_ext},
  ext_modules = ext_modules,
)
