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import os
import sys
import platform
import textwrap
import sysconfig
import pytest
from distutils import ccompiler
def _make_strs(paths):
"""
Convert paths to strings for legacy compatibility.
"""
if sys.version_info > (3, 8) and platform.system() != "Windows":
return paths
return list(map(os.fspath, paths))
@pytest.fixture
def c_file(tmp_path):
c_file = tmp_path / 'foo.c'
gen_headers = ('Python.h',)
is_windows = platform.system() == "Windows"
plat_headers = ('windows.h',) * is_windows
all_headers = gen_headers + plat_headers
headers = '\n'.join(f'#include <{header}>\n' for header in all_headers)
payload = (
textwrap.dedent(
"""
#headers
void PyInit_foo(void) {}
"""
)
.lstrip()
.replace('#headers', headers)
)
c_file.write_text(payload)
return c_file
def test_set_include_dirs(c_file):
"""
Extensions should build even if set_include_dirs is invoked.
In particular, compiler-specific paths should not be overridden.
"""
compiler = ccompiler.new_compiler()
python = sysconfig.get_paths()['include']
compiler.set_include_dirs([python])
compiler.compile(_make_strs([c_file]))
# do it again, setting include dirs after any initialization
compiler.set_include_dirs([python])
compiler.compile(_make_strs([c_file]))
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