setup.py

# Copyright (c) 2019, Intel Corporation
#
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#       may be used to endorse or promote products derived from this software
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import importlib.machinery
import sys
from setuptools.modified import newer
from os import makedirs
from os.path import join, exists, dirname

import skbuild

sys.path.insert(0, dirname(__file__))  # Ensures local imports work
from _vendored.conv_template import process_file as process_c_file


# TODO: rewrite generation in CMake, see NumPy meson implementation
# https://github.com/numpy/numpy/blob/c6fb3357541fd8cf6e4faeaeda3b1a9065da0520/numpy/_core/meson.build#L623
def load_module(name, fn):
    """
    Credit: numpy.compat.npy_load_module
    """
    return importlib.machinery.SourceFileLoader(name, fn).load_module()

def separator_join(sep, strs):
    """
    Joins non-empty arguments strings with dot.

    Credit: numpy.distutils.misc_util.dot_join
    """
    assert isinstance(strs, (list, tuple))
    assert isinstance(sep, str)
    return sep.join([si for si in strs if si])

pdir = join(dirname(__file__), 'mkl_umath')
wdir = join(pdir, 'src')

generate_umath_py = join(pdir, 'generate_umath.py')
n = separator_join('_', ('mkl_umath', 'generate_umath'))
generate_umath = load_module(n, generate_umath_py)
del n


def generate_umath_c(build_dir):
    target_dir = join(build_dir, 'src')
    target = join(target_dir, '__umath_generated.c')
    if not exists(target_dir):
        print("Folder {} was expected to exist, but creating".format(target_dir))
        makedirs(target_dir)
    script = generate_umath_py
    if newer(script, target):
        with open(target, 'w') as f:
            f.write(generate_umath.make_code(generate_umath.defdict,
                                             generate_umath.__file__))
    return []


generate_umath_c(pdir)

loops_header_templ = join(wdir, "mkl_umath_loops.h.src")
processed_loops_h_fn = join(wdir, "mkl_umath_loops.h")
loops_header_processed = process_c_file(loops_header_templ)

with open(processed_loops_h_fn, 'w') as fid:
    fid.write(loops_header_processed)

loops_src_templ = join(wdir, "mkl_umath_loops.c.src")
processed_loops_src_fn = join(wdir, "mkl_umath_loops.c")
loops_src_processed = process_c_file(loops_src_templ)

with open(processed_loops_src_fn, 'w') as fid:
    fid.write(loops_src_processed)


skbuild.setup(
    packages=[
        "mkl_umath",
    ],
    package_data={"mkl_umath": ["tests/*.*"]},
    include_package_data=True,
)