setup.py

#!/usr/bin/env python3
"""
Build script for CUDA add operator.
Usage: python setup.py build
"""

from setuptools import setup, Extension
from torch.utils.cpp_extension import BuildExtension, CUDAExtension
import os

os.environ['CC'] = 'gcc'
os.environ['CXX'] = 'g++'

this_dir = os.path.dirname(os.path.abspath(__file__))

setup(
    name='torch_add_cuda',
    version='0.1',
    ext_modules=[
        CUDAExtension(
            name='torch_add_cuda',
            sources=[
                'src/add_pybind.cpp',
                'src/add_cuda.cu',
            ],
            include_dirs=[os.path.join(this_dir, 'include')],
            extra_compile_args={
                'cxx': ['-O3'],
                'nvcc': ['-O3', '--use_fast_math']
            },
        )
    ],
    cmdclass={
        'build_ext': BuildExtension
    },
)