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import os
import posixpath
import re
import shutil
import sys
from distutils import sysconfig
import setuptools
from setuptools.command import build_ext
here = os.path.dirname(os.path.abspath(__file__))
IS_WINDOWS = sys.platform.startswith('win')
def _get_version():
"""Parse the version string from __init__.py."""
with open(os.path.join(here, 'bindings', 'python', 'google_benchmark', '__init__.py')) as f:
try:
version_line = next(
line for line in f if line.startswith('__version__'))
except StopIteration:
raise ValueError('__version__ not defined in __init__.py')
else:
ns = {}
exec(version_line, ns) # pylint: disable=exec-used
return ns['__version__']
def _parse_requirements(path):
with open(os.path.join(here, path)) as f:
return [
line.rstrip() for line in f
if not (line.isspace() or line.startswith('#'))
]
class BazelExtension(setuptools.Extension):
"""A C/C++ extension that is defined as a Bazel BUILD target."""
def __init__(self, name, bazel_target):
self.bazel_target = bazel_target
self.relpath, self.target_name = (
posixpath.relpath(bazel_target, '//').split(':'))
setuptools.Extension.__init__(self, name, sources=[])
class BuildBazelExtension(build_ext.build_ext):
"""A command that runs Bazel to build a C/C++ extension."""
def run(self):
for ext in self.extensions:
self.bazel_build(ext)
build_ext.build_ext.run(self)
def bazel_build(self, ext):
with open('WORKSPACE', 'r') as f:
workspace_contents = f.read()
with open('WORKSPACE', 'w') as f:
f.write(re.sub(
r'(?<=path = ").*(?=", # May be overwritten by setup\.py\.)',
sysconfig.get_python_inc().replace(os.path.sep, posixpath.sep),
workspace_contents))
if not os.path.exists(self.build_temp):
os.makedirs(self.build_temp)
bazel_argv = [
'bazel',
'build',
ext.bazel_target,
'--symlink_prefix=' + os.path.join(self.build_temp, 'bazel-'),
'--compilation_mode=' + ('dbg' if self.debug else 'opt'),
]
if IS_WINDOWS:
# Link with python*.lib.
for library_dir in self.library_dirs:
bazel_argv.append('--linkopt=/LIBPATH:' + library_dir)
self.spawn(bazel_argv)
shared_lib_suffix = '.dll' if IS_WINDOWS else '.so'
ext_bazel_bin_path = os.path.join(
self.build_temp, 'bazel-bin',
ext.relpath, ext.target_name + shared_lib_suffix)
ext_dest_path = self.get_ext_fullpath(ext.name)
ext_dest_dir = os.path.dirname(ext_dest_path)
if not os.path.exists(ext_dest_dir):
os.makedirs(ext_dest_dir)
shutil.copyfile(ext_bazel_bin_path, ext_dest_path)
setuptools.setup(
name='google_benchmark',
version=_get_version(),
url='https://github.com/google/benchmark',
description='A library to benchmark code snippets.',
author='Google',
author_email='benchmark-py@google.com',
# Contained modules and scripts.
package_dir={'': 'bindings/python'},
packages=setuptools.find_packages('bindings/python'),
install_requires=_parse_requirements('bindings/python/requirements.txt'),
cmdclass=dict(build_ext=BuildBazelExtension),
ext_modules=[BazelExtension('google_benchmark._benchmark', '//bindings/python/google_benchmark:_benchmark')],
zip_safe=False,
# PyPI package information.
classifiers=[
'Development Status :: 4 - Beta',
'Intended Audience :: Developers',
'Intended Audience :: Science/Research',
'License :: OSI Approved :: Apache Software License',
'Programming Language :: Python :: 3.6',
'Programming Language :: Python :: 3.7',
'Programming Language :: Python :: 3.8',
'Topic :: Software Development :: Testing',
'Topic :: System :: Benchmark',
],
license='Apache 2.0',
keywords='benchmark',
)
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