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[3.12] Add support.MS_WINDOWS constant (#110446) (#110452) Add support.MS_WINDOWS constant (#110446) (cherry picked from commite0c4437793) (cherry picked from commite188534607)
59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
# gh-91321: Build a basic C++ test extension to check that the Python C API is
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# compatible with C++ and does not emit C++ compiler warnings.
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import os.path
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import shlex
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import sys
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import sysconfig
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from test import support
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from setuptools import setup, Extension
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SOURCE = os.path.join(os.path.dirname(__file__), 'extension.cpp')
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if not support.MS_WINDOWS:
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# C++ compiler flags for GCC and clang
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CPPFLAGS = [
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# gh-91321: The purpose of _testcppext extension is to check that building
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# a C++ extension using the Python C API does not emit C++ compiler
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# warnings
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'-Werror',
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]
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else:
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# Don't pass any compiler flag to MSVC
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CPPFLAGS = []
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def main():
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cppflags = list(CPPFLAGS)
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if '-std=c++03' in sys.argv:
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sys.argv.remove('-std=c++03')
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std = 'c++03'
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name = '_testcpp03ext'
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else:
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# Python currently targets C++11
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std = 'c++11'
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name = '_testcpp11ext'
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cppflags = [*CPPFLAGS, f'-std={std}']
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# gh-105776: When "gcc -std=11" is used as the C++ compiler, -std=c11
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# option emits a C++ compiler warning. Remove "-std11" option from the
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# CC command.
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cmd = (sysconfig.get_config_var('CC') or '')
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if cmd is not None:
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cmd = shlex.split(cmd)
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cmd = [arg for arg in cmd if not arg.startswith('-std=')]
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cmd = shlex.join(cmd)
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# CC env var overrides sysconfig CC variable in setuptools
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os.environ['CC'] = cmd
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cpp_ext = Extension(
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name,
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sources=[SOURCE],
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language='c++',
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extra_compile_args=cppflags)
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setup(name='internal' + name, version='0.0', ext_modules=[cpp_ext])
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if __name__ == "__main__":
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main()
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