# Licensed under a 3-clause BSD style license - see LICENSE.rst
import os
from distutils.core import Extension
import numpy as np
HEALPIX_ROOT = os.path.relpath(os.path.dirname(__file__))
C_FILES = ['bl.c',
'healpix-utils.c',
'healpix.c',
'mathutil.c',
'permutedsort.c',
'qsort_reentrant.c',
'starutil.c']
C_DIR = os.path.join('cextern', 'astrometry.net')
C_DIRS = [np.get_include(), C_DIR, HEALPIX_ROOT,
os.path.join('cextern', 'numpy')]
def get_extensions():
libraries = []
sources = [os.path.join(C_DIR, filename) for filename in C_FILES]
sources.append(os.path.join(HEALPIX_ROOT, 'interpolation.c'))
sources.append(os.path.join(HEALPIX_ROOT, '_core.c'))
extension = Extension(
name="astropy_healpix._core",
sources=sources,
include_dirs=C_DIRS,
libraries=libraries,
language="c",
extra_compile_args=['-O2'])
return [extension]