mirror of
https://github.com/python/cpython.git
synced 2025-10-30 01:47:38 +00:00
43709d5d54
On Windows, test_cext and test_cppext now pass /WX flag to the MSC compiler to treat all compiler warnings as errors. In verbose mode, these tests now log the compiler commands to help debugging. Change Py_BUILD_ASSERT_EXPR implementation on Windows to avoid a compiler warning about an unnamed structure.
95 lines
2.9 KiB
Python
95 lines
2.9 KiB
Python
# 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 os
|
|
import platform
|
|
import shlex
|
|
import sysconfig
|
|
from test import support
|
|
|
|
from setuptools import setup, Extension
|
|
|
|
|
|
SOURCE = 'extension.cpp'
|
|
|
|
if not support.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',
|
|
]
|
|
else:
|
|
# MSVC compiler flags
|
|
CPPFLAGS = [
|
|
# Treat all compiler warnings as compiler errors
|
|
'/WX',
|
|
]
|
|
|
|
|
|
def main():
|
|
cppflags = list(CPPFLAGS)
|
|
std = os.environ.get("CPYTHON_TEST_CPP_STD", "")
|
|
module_name = os.environ["CPYTHON_TEST_EXT_NAME"]
|
|
|
|
cppflags = list(CPPFLAGS)
|
|
cppflags.append(f'-DMODULE_NAME={module_name}')
|
|
|
|
# Add -std=STD or /std:STD (MSVC) compiler flag
|
|
if std:
|
|
if support.MS_WINDOWS:
|
|
cppflags.append(f'/std:{std}')
|
|
else:
|
|
cppflags.append(f'-std={std}')
|
|
|
|
# gh-105776: When "gcc -std=11" is used as the C++ compiler, -std=c11
|
|
# option emits a C++ compiler warning. Remove "-std11" option from the
|
|
# CC command.
|
|
cmd = (sysconfig.get_config_var('CC') or '')
|
|
if cmd is not None:
|
|
if support.MS_WINDOWS:
|
|
std_prefix = '/std'
|
|
else:
|
|
std_prefix = '-std'
|
|
cmd = shlex.split(cmd)
|
|
cmd = [arg for arg in cmd if not arg.startswith(std_prefix)]
|
|
cmd = shlex.join(cmd)
|
|
# CC env var overrides sysconfig CC variable in setuptools
|
|
os.environ['CC'] = cmd
|
|
|
|
# On Windows, add PCbuild\amd64\ to include and library directories
|
|
include_dirs = []
|
|
library_dirs = []
|
|
if support.MS_WINDOWS:
|
|
srcdir = sysconfig.get_config_var('srcdir')
|
|
machine = platform.uname().machine
|
|
pcbuild = os.path.join(srcdir, 'PCbuild', machine)
|
|
if os.path.exists(pcbuild):
|
|
# pyconfig.h is generated in PCbuild\amd64\
|
|
include_dirs.append(pcbuild)
|
|
# python313.lib is generated in PCbuild\amd64\
|
|
library_dirs.append(pcbuild)
|
|
print(f"Add PCbuild directory: {pcbuild}")
|
|
|
|
# Display information to help debugging
|
|
for env_name in ('CC', 'CFLAGS', 'CPPFLAGS'):
|
|
if env_name in os.environ:
|
|
print(f"{env_name} env var: {os.environ[env_name]!r}")
|
|
else:
|
|
print(f"{env_name} env var: <missing>")
|
|
print(f"extra_compile_args: {cppflags!r}")
|
|
|
|
ext = Extension(
|
|
module_name,
|
|
sources=[SOURCE],
|
|
language='c++',
|
|
extra_compile_args=cppflags,
|
|
include_dirs=include_dirs,
|
|
library_dirs=library_dirs)
|
|
setup(name=f'internal_{module_name}',
|
|
version='0.0',
|
|
ext_modules=[ext])
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|