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# gh-91321: Build a basic C++ test extension to check that the Python C API is
# compatible with C++ and does not emit C++ compiler warnings.
import sys
from test import support
from setuptools import setup, Extension
MS_WINDOWS = (sys.platform == 'win32')
SOURCE = support.findfile('_testcppext.cpp')
if not MS_WINDOWS:
# C++ compiler flags for GCC and clang
CPPFLAGS = [
# gh-91321: The purpose of _testcppext extension is to check that building
# a C++ extension using the Python C API does not emit C++ compiler
# warnings
'-Werror',
# Warn on old-style cast (C cast) like: (PyObject*)op
'-Wold-style-cast',
# Warn when using NULL rather than _Py_NULL in static inline functions
'-Wzero-as-null-pointer-constant',
]
else:
# Don't pass any compiler flag to MSVC
CPPFLAGS = []
def main():
cppflags = list(CPPFLAGS)
if '-std=c++03' in sys.argv:
sys.argv.remove('-std=c++03')
std = 'c++03'
name = '_testcpp03ext'
else:
# Python currently targets C++11
std = 'c++11'
name = '_testcpp11ext'
cppflags = [*CPPFLAGS, f'-std={std}']
cpp_ext = Extension(
name,
sources=[SOURCE],
language='c++',
extra_compile_args=cppflags)
setup(name=name, ext_modules=[cpp_ext])
if __name__ == "__main__":
main()
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