import platform
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import sysconfig
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import textwrap
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import pytest
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from .. import base
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pytestmark = pytest.mark.usefixtures('suppress_path_mangle')
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@pytest.fixture
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def c_file(tmp_path):
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c_file = tmp_path / 'foo.c'
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gen_headers = ('Python.h',)
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is_windows = platform.system() == "Windows"
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plat_headers = ('windows.h',) * is_windows
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all_headers = gen_headers + plat_headers
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headers = '\n'.join(f'#include <{header}>\n' for header in all_headers)
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payload = (
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textwrap.dedent(
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"""
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#headers
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void PyInit_foo(void) {}
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"""
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)
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.lstrip()
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.replace('#headers', headers)
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)
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c_file.write_text(payload, encoding='utf-8')
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return c_file
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def test_set_include_dirs(c_file):
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"""
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Extensions should build even if set_include_dirs is invoked.
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In particular, compiler-specific paths should not be overridden.
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"""
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compiler = base.new_compiler()
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python = sysconfig.get_paths()['include']
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compiler.set_include_dirs([python])
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compiler.compile([c_file])
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# do it again, setting include dirs after any initialization
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compiler.set_include_dirs([python])
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compiler.compile([c_file])
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def test_has_function_prototype():
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# Issue https://github.com/pypa/setuptools/issues/3648
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# Test prototype-generating behavior.
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compiler = base.new_compiler()
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# Every C implementation should have these.
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assert compiler.has_function('abort')
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assert compiler.has_function('exit')
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with pytest.deprecated_call(match='includes is deprecated'):
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# abort() is a valid expression with the <stdlib.h> prototype.
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assert compiler.has_function('abort', includes=['stdlib.h'])
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with pytest.deprecated_call(match='includes is deprecated'):
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# But exit() is not valid with the actual prototype in scope.
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assert not compiler.has_function('exit', includes=['stdlib.h'])
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# And setuptools_does_not_exist is not declared or defined at all.
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assert not compiler.has_function('setuptools_does_not_exist')
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with pytest.deprecated_call(match='includes is deprecated'):
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assert not compiler.has_function(
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'setuptools_does_not_exist', includes=['stdio.h']
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)
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def test_include_dirs_after_multiple_compile_calls(c_file):
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"""
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Calling compile multiple times should not change the include dirs
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(regression test for setuptools issue #3591).
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"""
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compiler = base.new_compiler()
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python = sysconfig.get_paths()['include']
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compiler.set_include_dirs([python])
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compiler.compile([c_file])
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assert compiler.include_dirs == [python]
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compiler.compile([c_file])
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assert compiler.include_dirs == [python]
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