[Python-checkins] cpython (2.7): Issue #18080: When building a C extension module on OS X, if the compiler
ned.deily
python-checkins at python.org
Wed May 29 01:45:41 CEST 2013
http://hg.python.org/cpython/rev/ca24bc6a5a4b
changeset: 83965:ca24bc6a5a4b
branch: 2.7
parent: 83958:ef9d42b98a3d
user: Ned Deily <nad at acm.org>
date: Tue May 28 16:31:45 2013 -0700
summary:
Issue #18080: When building a C extension module on OS X, if the compiler
is overriden with the CC environment variable, use the new compiler as
the default for linking if LDSHARED is not also overriden. This restores
Distutils behavior introduced in 2.7.3 and inadvertently dropped in 2.7.4.
files:
Lib/distutils/sysconfig.py | 10 ++-
Lib/distutils/tests/test_unixccompiler.py | 34 ++++++++++-
Misc/NEWS | 5 +
3 files changed, 46 insertions(+), 3 deletions(-)
diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -175,9 +175,15 @@
'CCSHARED', 'LDSHARED', 'SO', 'AR',
'ARFLAGS')
- newcc = None
if 'CC' in os.environ:
- cc = os.environ['CC']
+ newcc = os.environ['CC']
+ if (sys.platform == 'darwin'
+ and 'LDSHARED' not in os.environ
+ and ldshared.startswith(cc)):
+ # On OS X, if CC is overridden, use that as the default
+ # command for LDSHARED as well
+ ldshared = newcc + ldshared[len(cc):]
+ cc = newcc
if 'CXX' in os.environ:
cxx = os.environ['CXX']
if 'LDSHARED' in os.environ:
diff --git a/Lib/distutils/tests/test_unixccompiler.py b/Lib/distutils/tests/test_unixccompiler.py
--- a/Lib/distutils/tests/test_unixccompiler.py
+++ b/Lib/distutils/tests/test_unixccompiler.py
@@ -1,7 +1,8 @@
"""Tests for distutils.unixccompiler."""
+import os
import sys
import unittest
-from test.test_support import run_unittest
+from test.test_support import EnvironmentVarGuard, run_unittest
from distutils import sysconfig
from distutils.unixccompiler import UnixCCompiler
@@ -122,6 +123,37 @@
sysconfig.get_config_var = gcv
self.assertEqual(self.cc.rpath_foo(), '-R/foo')
+ @unittest.skipUnless(sys.platform == 'darwin', 'test only relevant for OS X')
+ def test_osx_cc_overrides_ldshared(self):
+ # Issue #18080:
+ # ensure that setting CC env variable also changes default linker
+ def gcv(v):
+ if v == 'LDSHARED':
+ return 'gcc-4.2 -bundle -undefined dynamic_lookup '
+ return 'gcc-4.2'
+ sysconfig.get_config_var = gcv
+ with EnvironmentVarGuard() as env:
+ env['CC'] = 'my_cc'
+ del env['LDSHARED']
+ sysconfig.customize_compiler(self.cc)
+ self.assertEqual(self.cc.linker_so[0], 'my_cc')
+
+ @unittest.skipUnless(sys.platform == 'darwin', 'test only relevant for OS X')
+ def test_osx_explict_ldshared(self):
+ # Issue #18080:
+ # ensure that setting CC env variable does not change
+ # explicit LDSHARED setting for linker
+ def gcv(v):
+ if v == 'LDSHARED':
+ return 'gcc-4.2 -bundle -undefined dynamic_lookup '
+ return 'gcc-4.2'
+ sysconfig.get_config_var = gcv
+ with EnvironmentVarGuard() as env:
+ env['CC'] = 'my_cc'
+ env['LDSHARED'] = 'my_ld -bundle -dynamic'
+ sysconfig.customize_compiler(self.cc)
+ self.assertEqual(self.cc.linker_so[0], 'my_ld')
+
def test_suite():
return unittest.makeSuite(UnixCCompilerTestCase)
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -28,6 +28,11 @@
- Issue #17269: Workaround for socket.getaddrinfo crash on MacOS X
with port None or "0" and flags AI_NUMERICSERV.
+- Issue #18080: When building a C extension module on OS X, if the compiler
+ is overriden with the CC environment variable, use the new compiler as
+ the default for linking if LDSHARED is not also overriden. This restores
+ Distutils behavior introduced in 2.7.3 and inadvertently dropped in 2.7.4.
+
IDLE
----
--
Repository URL: http://hg.python.org/cpython
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