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"""Tests for distutils.sysconfig."""
import contextlib
import os
import shutil
import subprocess
import sys
import textwrap
import unittest
from distutils import sysconfig
from distutils.ccompiler import get_default_compiler
from distutils.tests import support
from test.support import swap_item, requires_subprocess, is_wasi
from test.support.os_helper import TESTFN
from test.support.warnings_helper import check_warnings
class SysconfigTestCase(support.EnvironGuard, unittest.TestCase):
def setUp(self):
super(SysconfigTestCase, self).setUp()
self.makefile = None
def tearDown(self):
if self.makefile is not None:
os.unlink(self.makefile)
self.cleanup_testfn()
super(SysconfigTestCase, self).tearDown()
def cleanup_testfn(self):
if os.path.isfile(TESTFN):
os.remove(TESTFN)
elif os.path.isdir(TESTFN):
shutil.rmtree(TESTFN)
@unittest.skipIf(is_wasi, "Incompatible with WASI mapdir and OOT builds")
def test_get_config_h_filename(self):
config_h = sysconfig.get_config_h_filename()
self.assertTrue(os.path.isfile(config_h), config_h)
def test_get_python_lib(self):
# XXX doesn't work on Linux when Python was never installed before
#self.assertTrue(os.path.isdir(lib_dir), lib_dir)
# test for pythonxx.lib?
self.assertNotEqual(sysconfig.get_python_lib(),
sysconfig.get_python_lib(prefix=TESTFN))
def test_get_config_vars(self):
cvars = sysconfig.get_config_vars()
self.assertIsInstance(cvars, dict)
self.assertTrue(cvars)
@unittest.skipIf(is_wasi, "Incompatible with WASI mapdir and OOT builds")
def test_srcdir(self):
# See Issues #15322, #15364.
srcdir = sysconfig.get_config_var('srcdir')
self.assertTrue(os.path.isabs(srcdir), srcdir)
self.assertTrue(os.path.isdir(srcdir), srcdir)
if sysconfig.python_build:
# The python executable has not been installed so srcdir
# should be a full source checkout.
Python_h = os.path.join(srcdir, 'Include', 'Python.h')
self.assertTrue(os.path.exists(Python_h), Python_h)
# <srcdir>/PC/pyconfig.h always exists even if unused on POSIX.
pyconfig_h = os.path.join(srcdir, 'PC', 'pyconfig.h')
self.assertTrue(os.path.exists(pyconfig_h), pyconfig_h)
pyconfig_h_in = os.path.join(srcdir, 'pyconfig.h.in')
self.assertTrue(os.path.exists(pyconfig_h_in), pyconfig_h_in)
elif os.name == 'posix':
self.assertEqual(
os.path.dirname(sysconfig.get_makefile_filename()),
srcdir)
def test_srcdir_independent_of_cwd(self):
# srcdir should be independent of the current working directory
# See Issues #15322, #15364.
srcdir = sysconfig.get_config_var('srcdir')
cwd = os.getcwd()
try:
os.chdir('..')
srcdir2 = sysconfig.get_config_var('srcdir')
finally:
os.chdir(cwd)
self.assertEqual(srcdir, srcdir2)
def customize_compiler(self):
# make sure AR gets caught
class compiler:
compiler_type = 'unix'
def set_executables(self, **kw):
self.exes = kw
sysconfig_vars = {
'AR': 'sc_ar',
'CC': 'sc_cc',
'CXX': 'sc_cxx',
'ARFLAGS': '--sc-arflags',
'CFLAGS': '--sc-cflags',
'CCSHARED': '--sc-ccshared',
'LDSHARED': 'sc_ldshared',
'SHLIB_SUFFIX': 'sc_shutil_suffix',
# On macOS, disable _osx_support.customize_compiler()
'CUSTOMIZED_OSX_COMPILER': 'True',
}
comp = compiler()
with contextlib.ExitStack() as cm:
for key, value in sysconfig_vars.items():
cm.enter_context(swap_item(sysconfig._config_vars, key, value))
sysconfig.customize_compiler(comp)
return comp
@unittest.skipUnless(get_default_compiler() == 'unix',
'not testing if default compiler is not unix')
def test_customize_compiler(self):
# Make sure that sysconfig._config_vars is initialized
sysconfig.get_config_vars()
os.environ['AR'] = 'env_ar'
os.environ['CC'] = 'env_cc'
os.environ['CPP'] = 'env_cpp'
os.environ['CXX'] = 'env_cxx --env-cxx-flags'
os.environ['LDSHARED'] = 'env_ldshared'
os.environ['LDFLAGS'] = '--env-ldflags'
os.environ['ARFLAGS'] = '--env-arflags'
os.environ['CFLAGS'] = '--env-cflags'
os.environ['CPPFLAGS'] = '--env-cppflags'
comp = self.customize_compiler()
self.assertEqual(comp.exes['archiver'],
'env_ar --env-arflags')
self.assertEqual(comp.exes['preprocessor'],
'env_cpp --env-cppflags')
self.assertEqual(comp.exes['compiler'],
'env_cc --sc-cflags --env-cflags --env-cppflags')
self.assertEqual(comp.exes['compiler_so'],
('env_cc --sc-cflags '
'--env-cflags ''--env-cppflags --sc-ccshared'))
self.assertEqual(comp.exes['compiler_cxx'],
'env_cxx --env-cxx-flags')
self.assertEqual(comp.exes['linker_exe'],
'env_cc')
self.assertEqual(comp.exes['linker_so'],
('env_ldshared --env-ldflags --env-cflags'
' --env-cppflags'))
self.assertEqual(comp.shared_lib_extension, 'sc_shutil_suffix')
del os.environ['AR']
del os.environ['CC']
del os.environ['CPP']
del os.environ['CXX']
del os.environ['LDSHARED']
del os.environ['LDFLAGS']
del os.environ['ARFLAGS']
del os.environ['CFLAGS']
del os.environ['CPPFLAGS']
comp = self.customize_compiler()
self.assertEqual(comp.exes['archiver'],
'sc_ar --sc-arflags')
self.assertEqual(comp.exes['preprocessor'],
'sc_cc -E')
self.assertEqual(comp.exes['compiler'],
'sc_cc --sc-cflags')
self.assertEqual(comp.exes['compiler_so'],
'sc_cc --sc-cflags --sc-ccshared')
self.assertEqual(comp.exes['compiler_cxx'],
'sc_cxx')
self.assertEqual(comp.exes['linker_exe'],
'sc_cc')
self.assertEqual(comp.exes['linker_so'],
'sc_ldshared')
self.assertEqual(comp.shared_lib_extension, 'sc_shutil_suffix')
def test_parse_makefile_base(self):
self.makefile = TESTFN
fd = open(self.makefile, 'w')
try:
fd.write(r"CONFIG_ARGS= '--arg1=optarg1' 'ENV=LIB'" '\n')
fd.write('VAR=$OTHER\nOTHER=foo')
finally:
fd.close()
d = sysconfig.parse_makefile(self.makefile)
self.assertEqual(d, {'CONFIG_ARGS': "'--arg1=optarg1' 'ENV=LIB'",
'OTHER': 'foo'})
def test_parse_makefile_literal_dollar(self):
self.makefile = TESTFN
fd = open(self.makefile, 'w')
try:
fd.write(r"CONFIG_ARGS= '--arg1=optarg1' 'ENV=\$$LIB'" '\n')
fd.write('VAR=$OTHER\nOTHER=foo')
finally:
fd.close()
d = sysconfig.parse_makefile(self.makefile)
self.assertEqual(d, {'CONFIG_ARGS': r"'--arg1=optarg1' 'ENV=\$LIB'",
'OTHER': 'foo'})
def test_sysconfig_module(self):
import sysconfig as global_sysconfig
self.assertEqual(global_sysconfig.get_config_var('CFLAGS'),
sysconfig.get_config_var('CFLAGS'))
self.assertEqual(global_sysconfig.get_config_var('LDFLAGS'),
sysconfig.get_config_var('LDFLAGS'))
@unittest.skipIf(sysconfig.get_config_var('CUSTOMIZED_OSX_COMPILER'),
'compiler flags customized')
def test_sysconfig_compiler_vars(self):
# On OS X, binary installers support extension module building on
# various levels of the operating system with differing Xcode
# configurations. This requires customization of some of the
# compiler configuration directives to suit the environment on
# the installed machine. Some of these customizations may require
# running external programs and, so, are deferred until needed by
# the first extension module build. With Python 3.3, only
# the Distutils version of sysconfig is used for extension module
# builds, which happens earlier in the Distutils tests. This may
# cause the following tests to fail since no tests have caused
# the global version of sysconfig to call the customization yet.
# The solution for now is to simply skip this test in this case.
# The longer-term solution is to only have one version of sysconfig.
import sysconfig as global_sysconfig
if sysconfig.get_config_var('CUSTOMIZED_OSX_COMPILER'):
self.skipTest('compiler flags customized')
self.assertEqual(global_sysconfig.get_config_var('LDSHARED'),
sysconfig.get_config_var('LDSHARED'))
self.assertEqual(global_sysconfig.get_config_var('CC'),
sysconfig.get_config_var('CC'))
@requires_subprocess()
def test_customize_compiler_before_get_config_vars(self):
# Issue #21923: test that a Distribution compiler
# instance can be called without an explicit call to
# get_config_vars().
with open(TESTFN, 'w') as f:
f.writelines(textwrap.dedent('''\
from distutils.core import Distribution
config = Distribution().get_command_obj('config')
# try_compile may pass or it may fail if no compiler
# is found but it should not raise an exception.
rc = config.try_compile('int x;')
'''))
p = subprocess.Popen([str(sys.executable), TESTFN],
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
universal_newlines=True)
outs, errs = p.communicate()
self.assertEqual(0, p.returncode, "Subprocess failed: " + outs)
if __name__ == '__main__':
unittest.main()
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