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gh-92906: Enable test_cext and test_cppext on Windows (#117000)

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On Windows in release mode, the test_cext and test_cppext can now
build C and C++ extensions.

* test_cext now also builds the C extension without options.
* test_cppext now also builds the C++ extension without options.
* Add C++14 test to test_cppext; C++11 is not supported by MSVC.
* Make setup_venv_with_pip_setuptools_wheel() quiet when
  support.verbose is false. Only show stdout and stderr on failure.
This commit is contained in:
Victor Stinner 2024-03-19 15:03:27 +01:00 • committed by GitHub
parent 27cf3ed00c
commit a114d08a89
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7 changed files with 145 additions and 60 deletions
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70
Lib/test/test_cppext/setup.py
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@ -1,8 +1,8 @@
# 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 sys
import sysconfig
from test import support
@ -25,28 +25,62 @@ else:
def main():
cppflags = list(CPPFLAGS)
std = os.environ["CPYTHON_TEST_CPP_STD"]
name = os.environ["CPYTHON_TEST_EXT_NAME"]
std = os.environ.get("CPYTHON_TEST_CPP_STD", "")
module_name = os.environ["CPYTHON_TEST_EXT_NAME"]
cppflags = [*CPPFLAGS, f'-std={std}']
cppflags = list(CPPFLAGS)
cppflags.append(f'-DMODULE_NAME={module_name}')
# 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:
cmd = shlex.split(cmd)
cmd = [arg for arg in cmd if not arg.startswith('-std=')]
cmd = shlex.join(cmd)
# CC env var overrides sysconfig CC variable in setuptools
os.environ['CC'] = cmd
# Add -std=STD or /std:STD (MSVC) compiler flag
if std:
if support.MS_WINDOWS:
cppflags.append(f'/std:{std}')
std_prefix = '/std'
else:
cppflags.append(f'-std={std}')
std_prefix = '-std'
cpp_ext = Extension(
name,
# Remove existing -std options to only test ours
cmd = (sysconfig.get_config_var('CC') or '')
if cmd is not None:
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)
setup(name='internal' + name, version='0.0', ext_modules=[cpp_ext])
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__":