setup.py cannot find numpy headers

Question

To include C extensions, the setup.py to build my repo looks like:

import numpy as np
from setuptools import setup, Extension

setup(
    ext_modules=[
        Extension("my_module", 
                  sources=["my_module.cc"],
                  include_dirs=[np.get_include()]),
    ],
)

but despite including the path to the numpy headers, running python setup.py install results in the error fatal error: 'arrayobject.h' file not found because my_module.cc has #include <arrayobject.h>.

I've gone through dozens of related SO and GitHub issues, all suggesting the include_dirs=[np.get_include()] workaround I've already implemented. The numpy path is /usr/local/lib/python2.7/site-packages/numpy/core/include/, and yes I've confirmed the headers are indeed there.

Any suggestions?

BoltzmannBrain · Accepted Answer · 2017-10-10 03:32:57Z

1

On my system the header file is at /usr/local/lib/python2.7/site-packages/numpy/core/include/numpy/arrayobject.h, so the solution is to instead do include_dirs=[os.path.join(np.get_include(), 'numpy')].

answered Oct 10, 2017 at 3:32

BoltzmannBrain

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BoltzmannBrain Over a year ago

Alternatively, in the C file specify #include "numpy/arrayobject.h"

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