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Issue #13590: OS X Xcode 4 - improve support for universal extension modules 

In particular, fix extension module build failures when trying to use
    32-bit-only installer Pythons on systems with Xcode 4 (currently
    OS X 10.8, 10.7, and optionally 10.6).
    * Backport 3.3.0 fixes to 2.7 branch (for release in 2.7.4)
    * Since Xcode 4 removes ppc support, extension module builds now
      check for ppc compiler support and by default remove ppc and
      ppc64 archs when they are not available.
    * Extension module builds now revert to using system installed
      headers and libs (/usr and /System/Library) if the SDK used
      to build the interpreter is not installed or has moved.
    * Try to avoid building extension modules with deprecated
      and problematic Apple llvm-gcc compiler.  If original compiler
      is not available, use clang instead by default.
This commit is contained in:
Ned Deily 2013-01-31 01:24:55 -08:00
parent 77cd8aab23
commit 18fae3f954
9 changed files with 859 additions and 384 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

488
Lib/_osx_support.py Normal file
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@ -0,0 +1,488 @@
"""Shared OS X support functions."""
import os
import re
import sys
__all__ = [
'compiler_fixup',
'customize_config_vars',
'customize_compiler',
'get_platform_osx',
]
# configuration variables that may contain universal build flags,
# like "-arch" or "-isdkroot", that may need customization for
# the user environment
_UNIVERSAL_CONFIG_VARS = ('CFLAGS', 'LDFLAGS', 'CPPFLAGS', 'BASECFLAGS',
'BLDSHARED', 'LDSHARED', 'CC', 'CXX',
'PY_CFLAGS', 'PY_LDFLAGS', 'PY_CPPFLAGS',
'PY_CORE_CFLAGS')
# configuration variables that may contain compiler calls
_COMPILER_CONFIG_VARS = ('BLDSHARED', 'LDSHARED', 'CC', 'CXX')
# prefix added to original configuration variable names
_INITPRE = '_OSX_SUPPORT_INITIAL_'
def _find_executable(executable, path=None):
"""Tries to find 'executable' in the directories listed in 'path'.
A string listing directories separated by 'os.pathsep'; defaults to
os.environ['PATH']. Returns the complete filename or None if not found.
"""
if path is None:
path = os.environ['PATH']
paths = path.split(os.pathsep)
base, ext = os.path.splitext(executable)
if (sys.platform == 'win32' or os.name == 'os2') and (ext != '.exe'):
executable = executable + '.exe'
if not os.path.isfile(executable):
for p in paths:
f = os.path.join(p, executable)
if os.path.isfile(f):
# the file exists, we have a shot at spawn working
return f
return None
else:
return executable
def _read_output(commandstring):
"""Output from succesful command execution or None"""
# Similar to os.popen(commandstring, "r").read(),
# but without actually using os.popen because that
# function is not usable during python bootstrap.
# tempfile is also not available then.
import contextlib
try:
import tempfile
fp = tempfile.NamedTemporaryFile()
except ImportError:
fp = open("/tmp/_osx_support.%s"%(
os.getpid(),), "w+b")
with contextlib.closing(fp) as fp:
cmd = "%s 2>/dev/null >'%s'" % (commandstring, fp.name)
return fp.read().decode('utf-8').strip() if not os.system(cmd) else None
def _find_build_tool(toolname):
"""Find a build tool on current path or using xcrun"""
return (_find_executable(toolname)
or _read_output("/usr/bin/xcrun -find %s" % (toolname,))
or ''
)
_SYSTEM_VERSION = None
def _get_system_version():
"""Return the OS X system version as a string"""
# Reading this plist is a documented way to get the system
# version (see the documentation for the Gestalt Manager)
# We avoid using platform.mac_ver to avoid possible bootstrap issues during
# the build of Python itself (distutils is used to build standard library
# extensions).
global _SYSTEM_VERSION
if _SYSTEM_VERSION is None:
_SYSTEM_VERSION = ''
try:
f = open('/System/Library/CoreServices/SystemVersion.plist')
except IOError:
# We're on a plain darwin box, fall back to the default
# behaviour.
pass
else:
try:
m = re.search(r'<key>ProductUserVisibleVersion</key>\s*'
r'<string>(.*?)</string>', f.read())
finally:
f.close()
if m is not None:
_SYSTEM_VERSION = '.'.join(m.group(1).split('.')[:2])
# else: fall back to the default behaviour
return _SYSTEM_VERSION
def _remove_original_values(_config_vars):
"""Remove original unmodified values for testing"""
# This is needed for higher-level cross-platform tests of get_platform.
for k in list(_config_vars):
if k.startswith(_INITPRE):
del _config_vars[k]
def _save_modified_value(_config_vars, cv, newvalue):
"""Save modified and original unmodified value of configuration var"""
oldvalue = _config_vars.get(cv, '')
if (oldvalue != newvalue) and (_INITPRE + cv not in _config_vars):
_config_vars[_INITPRE + cv] = oldvalue
_config_vars[cv] = newvalue
def _supports_universal_builds():
"""Returns True if universal builds are supported on this system"""
# As an approximation, we assume that if we are running on 10.4 or above,
# then we are running with an Xcode environment that supports universal
# builds, in particular -isysroot and -arch arguments to the compiler. This
# is in support of allowing 10.4 universal builds to run on 10.3.x systems.
osx_version = _get_system_version()
if osx_version:
try:
osx_version = tuple(int(i) for i in osx_version.split('.'))
except ValueError:
osx_version = ''
return bool(osx_version >= (10, 4)) if osx_version else False
def _find_appropriate_compiler(_config_vars):
"""Find appropriate C compiler for extension module builds"""
# Issue #13590:
# The OSX location for the compiler varies between OSX
# (or rather Xcode) releases. With older releases (up-to 10.5)
# the compiler is in /usr/bin, with newer releases the compiler
# can only be found inside Xcode.app if the "Command Line Tools"
# are not installed.
#
# Futhermore, the compiler that can be used varies between
# Xcode releases. Upto Xcode 4 it was possible to use 'gcc-4.2'
# as the compiler, after that 'clang' should be used because
# gcc-4.2 is either not present, or a copy of 'llvm-gcc' that
# miscompiles Python.
# skip checks if the compiler was overriden with a CC env variable
if 'CC' in os.environ:
return _config_vars
# The CC config var might contain additional arguments.
# Ignore them while searching.
cc = oldcc = _config_vars['CC'].split()[0]
if not _find_executable(cc):
# Compiler is not found on the shell search PATH.
# Now search for clang, first on PATH (if the Command LIne
# Tools have been installed in / or if the user has provided
# another location via CC). If not found, try using xcrun
# to find an uninstalled clang (within a selected Xcode).
# NOTE: Cannot use subprocess here because of bootstrap
# issues when building Python itself (and os.popen is
# implemented on top of subprocess and is therefore not
# usable as well)
cc = _find_build_tool('clang')
elif os.path.basename(cc).startswith('gcc'):
# Compiler is GCC, check if it is LLVM-GCC
data = _read_output("'%s' --version"
% (cc.replace("'", "'\"'\"'"),))
if 'llvm-gcc' in data:
# Found LLVM-GCC, fall back to clang
cc = _find_build_tool('clang')
if not cc:
raise SystemError(
"Cannot locate working compiler")
if cc != oldcc:
# Found a replacement compiler.
# Modify config vars using new compiler, if not already explictly
# overriden by an env variable, preserving additional arguments.
for cv in _COMPILER_CONFIG_VARS:
if cv in _config_vars and cv not in os.environ:
cv_split = _config_vars[cv].split()
cv_split[0] = cc if cv != 'CXX' else cc + '++'
_save_modified_value(_config_vars, cv, ' '.join(cv_split))
return _config_vars
def _remove_universal_flags(_config_vars):
"""Remove all universal build arguments from config vars"""
for cv in _UNIVERSAL_CONFIG_VARS:
# Do not alter a config var explicitly overriden by env var
if cv in _config_vars and cv not in os.environ:
flags = _config_vars[cv]
flags = re.sub('-arch\s+\w+\s', ' ', flags)
flags = re.sub('-isysroot [^ \t]*', ' ', flags)
_save_modified_value(_config_vars, cv, flags)
return _config_vars
def _remove_unsupported_archs(_config_vars):
"""Remove any unsupported archs from config vars"""
# Different Xcode releases support different sets for '-arch'
# flags. In particular, Xcode 4.x no longer supports the
# PPC architectures.
#
# This code automatically removes '-arch ppc' and '-arch ppc64'
# when these are not supported. That makes it possible to
# build extensions on OSX 10.7 and later with the prebuilt
# 32-bit installer on the python.org website.
# skip checks if the compiler was overriden with a CC env variable
if 'CC' in os.environ:
return _config_vars
if re.search('-arch\s+ppc', _config_vars['CFLAGS']) is not None:
# NOTE: Cannot use subprocess here because of bootstrap
# issues when building Python itself
status = os.system("'%s' -arch ppc -x c /dev/null 2>/dev/null"%(
_config_vars['CC'].replace("'", "'\"'\"'"),))
# The Apple compiler drivers return status 255 if no PPC
if (status >> 8) == 255:
# Compiler doesn't support PPC, remove the related
# '-arch' flags if not explicitly overridden by an
# environment variable
for cv in _UNIVERSAL_CONFIG_VARS:
if cv in _config_vars and cv not in os.environ:
flags = _config_vars[cv]
flags = re.sub('-arch\s+ppc\w*\s', ' ', flags)
_save_modified_value(_config_vars, cv, flags)
return _config_vars
def _override_all_archs(_config_vars):
"""Allow override of all archs with ARCHFLAGS env var"""
# NOTE: This name was introduced by Apple in OSX 10.5 and
# is used by several scripting languages distributed with
# that OS release.
if 'ARCHFLAGS' in os.environ:
arch = os.environ['ARCHFLAGS']
for cv in _UNIVERSAL_CONFIG_VARS:
if cv in _config_vars and '-arch' in _config_vars[cv]:
flags = _config_vars[cv]
flags = re.sub('-arch\s+\w+\s', ' ', flags)
flags = flags + ' ' + arch
_save_modified_value(_config_vars, cv, flags)
return _config_vars
def _check_for_unavailable_sdk(_config_vars):
"""Remove references to any SDKs not available"""
# If we're on OSX 10.5 or later and the user tries to
# compile an extension using an SDK that is not present
# on the current machine it is better to not use an SDK
# than to fail. This is particularly important with
# the standalong Command Line Tools alternative to a
# full-blown Xcode install since the CLT packages do not
# provide SDKs. If the SDK is not present, it is assumed
# that the header files and dev libs have been installed
# to /usr and /System/Library by either a standalone CLT
# package or the CLT component within Xcode.
cflags = _config_vars.get('CFLAGS', '')
m = re.search(r'-isysroot\s+(\S+)', cflags)
if m is not None:
sdk = m.group(1)
if not os.path.exists(sdk):
for cv in _UNIVERSAL_CONFIG_VARS:
# Do not alter a config var explicitly overriden by env var
if cv in _config_vars and cv not in os.environ:
flags = _config_vars[cv]
flags = re.sub(r'-isysroot\s+\S+(?:\s|$)', ' ', flags)
_save_modified_value(_config_vars, cv, flags)
return _config_vars
def compiler_fixup(compiler_so, cc_args):
"""
This function will strip '-isysroot PATH' and '-arch ARCH' from the
compile flags if the user has specified one them in extra_compile_flags.
This is needed because '-arch ARCH' adds another architecture to the
build, without a way to remove an architecture. Furthermore GCC will
barf if multiple '-isysroot' arguments are present.
"""
stripArch = stripSysroot = False
compiler_so = list(compiler_so)
if not _supports_universal_builds():
# OSX before 10.4.0, these don't support -arch and -isysroot at
# all.
stripArch = stripSysroot = True
else:
stripArch = '-arch' in cc_args
stripSysroot = '-isysroot' in cc_args
if stripArch or 'ARCHFLAGS' in os.environ:
while True:
try:
index = compiler_so.index('-arch')
# Strip this argument and the next one:
del compiler_so[index:index+2]
except ValueError:
break
if 'ARCHFLAGS' in os.environ and not stripArch:
# User specified different -arch flags in the environ,
# see also distutils.sysconfig
compiler_so = compiler_so + os.environ['ARCHFLAGS'].split()
if stripSysroot:
while True:
try:
index = compiler_so.index('-isysroot')
# Strip this argument and the next one:
del compiler_so[index:index+2]
except ValueError:
break
# Check if the SDK that is used during compilation actually exists,
# the universal build requires the usage of a universal SDK and not all
# users have that installed by default.
sysroot = None
if '-isysroot' in cc_args:
idx = cc_args.index('-isysroot')
sysroot = cc_args[idx+1]
elif '-isysroot' in compiler_so:
idx = compiler_so.index('-isysroot')
sysroot = compiler_so[idx+1]
if sysroot and not os.path.isdir(sysroot):
from distutils import log
log.warn("Compiling with an SDK that doesn't seem to exist: %s",
sysroot)
log.warn("Please check your Xcode installation")
return compiler_so
def customize_config_vars(_config_vars):
"""Customize Python build configuration variables.
Called internally from sysconfig with a mutable mapping
containing name/value pairs parsed from the configured
makefile used to build this interpreter. Returns
the mapping updated as needed to reflect the environment
in which the interpreter is running; in the case of
a Python from a binary installer, the installed
environment may be very different from the build
environment, i.e. different OS levels, different
built tools, different available CPU architectures.
This customization is performed whenever
distutils.sysconfig.get_config_vars() is first
called. It may be used in environments where no
compilers are present, i.e. when installing pure
Python dists. Customization of compiler paths
and detection of unavailable archs is deferred
until the first extention module build is
requested (in distutils.sysconfig.customize_compiler).
Currently called from distutils.sysconfig
"""
if not _supports_universal_builds():
# On Mac OS X before 10.4, check if -arch and -isysroot
# are in CFLAGS or LDFLAGS and remove them if they are.
# This is needed when building extensions on a 10.3 system
# using a universal build of python.
_remove_universal_flags(_config_vars)
# Allow user to override all archs with ARCHFLAGS env var
_override_all_archs(_config_vars)
# Remove references to sdks that are not found
_check_for_unavailable_sdk(_config_vars)
return _config_vars
def customize_compiler(_config_vars):
"""Customize compiler path and configuration variables.
This customization is performed when the first
extension module build is requested
in distutils.sysconfig.customize_compiler).
"""
# Find a compiler to use for extension module builds
_find_appropriate_compiler(_config_vars)
# Remove ppc arch flags if not supported here
_remove_unsupported_archs(_config_vars)
# Allow user to override all archs with ARCHFLAGS env var
_override_all_archs(_config_vars)
return _config_vars
def get_platform_osx(_config_vars, osname, release, machine):
"""Filter values for get_platform()"""
# called from get_platform() in sysconfig and distutils.util
#
# For our purposes, we'll assume that the system version from
# distutils' perspective is what MACOSX_DEPLOYMENT_TARGET is set
# to. This makes the compatibility story a bit more sane because the
# machine is going to compile and link as if it were
# MACOSX_DEPLOYMENT_TARGET.
macver = _config_vars.get('MACOSX_DEPLOYMENT_TARGET', '')
macrelease = _get_system_version() or macver
macver = macver or macrelease
if macver:
release = macver
osname = "macosx"
# Use the original CFLAGS value, if available, so that we
# return the same machine type for the platform string.
# Otherwise, distutils may consider this a cross-compiling
# case and disallow installs.
cflags = _config_vars.get(_INITPRE+'CFLAGS',
_config_vars.get('CFLAGS', ''))
if ((macrelease + '.') >= '10.4.' and
'-arch' in cflags.strip()):
# The universal build will build fat binaries, but not on
# systems before 10.4
machine = 'fat'
archs = re.findall('-arch\s+(\S+)', cflags)
archs = tuple(sorted(set(archs)))
if len(archs) == 1:
machine = archs[0]
elif archs == ('i386', 'ppc'):
machine = 'fat'
elif archs == ('i386', 'x86_64'):
machine = 'intel'
elif archs == ('i386', 'ppc', 'x86_64'):
machine = 'fat3'
elif archs == ('ppc64', 'x86_64'):
machine = 'fat64'
elif archs == ('i386', 'ppc', 'ppc64', 'x86_64'):
machine = 'universal'
else:
raise ValueError(
"Don't know machine value for archs=%r" % (archs,))
elif machine == 'i386':
# On OSX the machine type returned by uname is always the
# 32-bit variant, even if the executable architecture is
# the 64-bit variant
if sys.maxint >= 2**32:
machine = 'x86_64'
elif machine in ('PowerPC', 'Power_Macintosh'):
# Pick a sane name for the PPC architecture.
# See 'i386' case
if sys.maxint >= 2**32:
machine = 'ppc64'
else:
machine = 'ppc'
return (osname, release, machine)

111
Lib/distutils/sysconfig.py
View File

@ -141,7 +141,7 @@ def get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
"I don't know where Python installs its library "
"on platform '%s'" % os.name)
_USE_CLANG = None
def customize_compiler(compiler):
"""Do any platform-specific customization of a CCompiler instance.
@ -150,6 +150,21 @@ def customize_compiler(compiler):
varies across Unices and is stored in Python's Makefile.
"""
if compiler.compiler_type == "unix":
if sys.platform == "darwin":
# Perform first-time customization of compiler-related
# config vars on OS X now that we know we need a compiler.
# This is primarily to support Pythons from binary
# installers. The kind and paths to build tools on
# the user system may vary significantly from the system
# that Python itself was built on. Also the user OS
# version and build tools may not support the same set
# of CPU architectures for universal builds.
global _config_vars
if not _config_vars.get('CUSTOMIZED_OSX_COMPILER', ''):
import _osx_support
_osx_support.customize_compiler(_config_vars)
_config_vars['CUSTOMIZED_OSX_COMPILER'] = 'True'
(cc, cxx, opt, cflags, ccshared, ldshared, so_ext, ar, ar_flags) = \
get_config_vars('CC', 'CXX', 'OPT', 'CFLAGS',
'CCSHARED', 'LDSHARED', 'SO', 'AR',
@ -157,36 +172,7 @@ def customize_compiler(compiler):
newcc = None
if 'CC' in os.environ:
newcc = os.environ['CC']
elif sys.platform == 'darwin' and cc == 'gcc-4.2':
# Issue #13590:
# Since Apple removed gcc-4.2 in Xcode 4.2, we can no
# longer assume it is available for extension module builds.
# If Python was built with gcc-4.2, check first to see if
# it is available on this system; if not, try to use clang
# instead unless the caller explicitly set CC.
global _USE_CLANG
if _USE_CLANG is None:
from distutils import log
from subprocess import Popen, PIPE
p = Popen("! type gcc-4.2 && type clang && exit 2",
shell=True, stdout=PIPE, stderr=PIPE)
p.wait()
if p.returncode == 2:
_USE_CLANG = True
log.warn("gcc-4.2 not found, using clang instead")
else:
_USE_CLANG = False
if _USE_CLANG:
newcc = 'clang'
if newcc:
# On OS X, if CC is overridden, use that as the default
# command for LDSHARED as well
if (sys.platform == 'darwin'
and 'LDSHARED' not in os.environ
and ldshared.startswith(cc)):
ldshared = newcc + ldshared[len(cc):]
cc = newcc
cc = os.environ['CC']
if 'CXX' in os.environ:
cxx = os.environ['CXX']
if 'LDSHARED' in os.environ:
@ -518,66 +504,11 @@ def get_config_vars(*args):
_config_vars['prefix'] = PREFIX
_config_vars['exec_prefix'] = EXEC_PREFIX
# OS X platforms require special customization to handle
# multi-architecture, multi-os-version installers
if sys.platform == 'darwin':
kernel_version = os.uname()[2] # Kernel version (8.4.3)
major_version = int(kernel_version.split('.')[0])
if major_version < 8:
# On Mac OS X before 10.4, check if -arch and -isysroot
# are in CFLAGS or LDFLAGS and remove them if they are.
# This is needed when building extensions on a 10.3 system
# using a universal build of python.
for key in ('LDFLAGS', 'BASECFLAGS', 'LDSHARED',
# a number of derived variables. These need to be
# patched up as well.
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
flags = _config_vars[key]
flags = re.sub('-arch\s+\w+\s', ' ', flags)
flags = re.sub('-isysroot [^ \t]*', ' ', flags)
_config_vars[key] = flags
else:
# Allow the user to override the architecture flags using
# an environment variable.
# NOTE: This name was introduced by Apple in OSX 10.5 and
# is used by several scripting languages distributed with
# that OS release.
if 'ARCHFLAGS' in os.environ:
arch = os.environ['ARCHFLAGS']
for key in ('LDFLAGS', 'BASECFLAGS', 'LDSHARED',
# a number of derived variables. These need to be
# patched up as well.
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
flags = _config_vars[key]
flags = re.sub('-arch\s+\w+\s', ' ', flags)
flags = flags + ' ' + arch
_config_vars[key] = flags
# If we're on OSX 10.5 or later and the user tries to
# compiles an extension using an SDK that is not present
# on the current machine it is better to not use an SDK
# than to fail.
#
# The major usecase for this is users using a Python.org
# binary installer on OSX 10.6: that installer uses
# the 10.4u SDK, but that SDK is not installed by default
# when you install Xcode.
#
m = re.search('-isysroot\s+(\S+)', _config_vars['CFLAGS'])
if m is not None:
sdk = m.group(1)
if not os.path.exists(sdk):
for key in ('LDFLAGS', 'BASECFLAGS', 'LDSHARED',
# a number of derived variables. These need to be
# patched up as well.
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
flags = _config_vars[key]
flags = re.sub('-isysroot\s+\S+(\s|$)', ' ', flags)
_config_vars[key] = flags
import _osx_support
_osx_support.customize_config_vars(_config_vars)
if args:
vals = []

29
Lib/distutils/tests/test_sysconfig.py
View File

@ -72,6 +72,35 @@ class SysconfigTestCase(support.EnvironGuard,
'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'):
return
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'))
def test_suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(SysconfigTestCase))

70
Lib/distutils/unixccompiler.py
View File

@ -26,6 +26,9 @@ from distutils.errors import \
DistutilsExecError, CompileError, LibError, LinkError
from distutils import log
if sys.platform == 'darwin':
import _osx_support
# XXX Things not currently handled:
# * optimization/debug/warning flags; we just use whatever's in Python's
# Makefile and live with it. Is this adequate? If not, we might
@ -41,68 +44,6 @@ from distutils import log
# should just happily stuff them into the preprocessor/compiler/linker
# options and carry on.
def _darwin_compiler_fixup(compiler_so, cc_args):
"""
This function will strip '-isysroot PATH' and '-arch ARCH' from the
compile flags if the user has specified one them in extra_compile_flags.
This is needed because '-arch ARCH' adds another architecture to the
build, without a way to remove an architecture. Furthermore GCC will
barf if multiple '-isysroot' arguments are present.
"""
stripArch = stripSysroot = 0
compiler_so = list(compiler_so)
kernel_version = os.uname()[2] # 8.4.3
major_version = int(kernel_version.split('.')[0])
if major_version < 8:
# OSX before 10.4.0, these don't support -arch and -isysroot at
# all.
stripArch = stripSysroot = True
else:
stripArch = '-arch' in cc_args
stripSysroot = '-isysroot' in cc_args
if stripArch or 'ARCHFLAGS' in os.environ:
while 1:
try:
index = compiler_so.index('-arch')
# Strip this argument and the next one:
del compiler_so[index:index+2]
except ValueError:
break
if 'ARCHFLAGS' in os.environ and not stripArch:
# User specified different -arch flags in the environ,
# see also distutils.sysconfig
compiler_so = compiler_so + os.environ['ARCHFLAGS'].split()
if stripSysroot:
try:
index = compiler_so.index('-isysroot')
# Strip this argument and the next one:
del compiler_so[index:index+2]
except ValueError:
pass
# Check if the SDK that is used during compilation actually exists,
# the universal build requires the usage of a universal SDK and not all
# users have that installed by default.
sysroot = None
if '-isysroot' in cc_args:
idx = cc_args.index('-isysroot')
sysroot = cc_args[idx+1]
elif '-isysroot' in compiler_so:
idx = compiler_so.index('-isysroot')
sysroot = compiler_so[idx+1]
if sysroot and not os.path.isdir(sysroot):
log.warn("Compiling with an SDK that doesn't seem to exist: %s",
sysroot)
log.warn("Please check your Xcode installation")
return compiler_so
class UnixCCompiler(CCompiler):
@ -172,7 +113,8 @@ class UnixCCompiler(CCompiler):
def _compile(self, obj, src, ext, cc_args, extra_postargs, pp_opts):
compiler_so = self.compiler_so
if sys.platform == 'darwin':
compiler_so = _darwin_compiler_fixup(compiler_so, cc_args + extra_postargs)
compiler_so = _osx_support.compiler_fixup(compiler_so,
cc_args + extra_postargs)
try:
self.spawn(compiler_so + cc_args + [src, '-o', obj] +
extra_postargs)
@ -251,7 +193,7 @@ class UnixCCompiler(CCompiler):
linker[i] = self.compiler_cxx[i]
if sys.platform == 'darwin':
linker = _darwin_compiler_fixup(linker, ld_args)
linker = _osx_support.compiler_fixup(linker, ld_args)
self.spawn(linker + ld_args)
except DistutilsExecError, msg:

92
Lib/distutils/util.py
View File

@ -93,94 +93,10 @@ def get_platform ():
if m:
release = m.group()
elif osname[:6] == "darwin":
#
# For our purposes, we'll assume that the system version from
# distutils' perspective is what MACOSX_DEPLOYMENT_TARGET is set
# to. This makes the compatibility story a bit more sane because the
# machine is going to compile and link as if it were
# MACOSX_DEPLOYMENT_TARGET.
from distutils.sysconfig import get_config_vars
cfgvars = get_config_vars()
macver = cfgvars.get('MACOSX_DEPLOYMENT_TARGET')
if 1:
# Always calculate the release of the running machine,
# needed to determine if we can build fat binaries or not.
macrelease = macver
# Get the system version. Reading this plist is a documented
# way to get the system version (see the documentation for
# the Gestalt Manager)
try:
f = open('/System/Library/CoreServices/SystemVersion.plist')
except IOError:
# We're on a plain darwin box, fall back to the default
# behaviour.
pass
else:
try:
m = re.search(
r'<key>ProductUserVisibleVersion</key>\s*' +
r'<string>(.*?)</string>', f.read())
if m is not None:
macrelease = '.'.join(m.group(1).split('.')[:2])
# else: fall back to the default behaviour
finally:
f.close()
if not macver:
macver = macrelease
if macver:
from distutils.sysconfig import get_config_vars
release = macver
osname = "macosx"
if (macrelease + '.') >= '10.4.' and \
'-arch' in get_config_vars().get('CFLAGS', '').strip():
# The universal build will build fat binaries, but not on
# systems before 10.4
#
# Try to detect 4-way universal builds, those have machine-type
# 'universal' instead of 'fat'.
machine = 'fat'
cflags = get_config_vars().get('CFLAGS')
archs = re.findall('-arch\s+(\S+)', cflags)
archs = tuple(sorted(set(archs)))
if len(archs) == 1:
machine = archs[0]
elif archs == ('i386', 'ppc'):
machine = 'fat'
elif archs == ('i386', 'x86_64'):
machine = 'intel'
elif archs == ('i386', 'ppc', 'x86_64'):
machine = 'fat3'
elif archs == ('ppc64', 'x86_64'):
machine = 'fat64'
elif archs == ('i386', 'ppc', 'ppc64', 'x86_64'):
machine = 'universal'
else:
raise ValueError(
"Don't know machine value for archs=%r"%(archs,))
elif machine == 'i386':
# On OSX the machine type returned by uname is always the
# 32-bit variant, even if the executable architecture is
# the 64-bit variant
if sys.maxint >= 2**32:
machine = 'x86_64'
elif machine in ('PowerPC', 'Power_Macintosh'):
# Pick a sane name for the PPC architecture.
machine = 'ppc'
# See 'i386' case
if sys.maxint >= 2**32:
machine = 'ppc64'
import _osx_support, distutils.sysconfig
osname, release, machine = _osx_support.get_platform_osx(
distutils.sysconfig.get_config_vars(),
osname, release, machine)
return "%s-%s-%s" % (osname, release, machine)

150
Lib/sysconfig.py
View File

@ -445,64 +445,11 @@ def get_config_vars(*args):
srcdir = os.path.join(base, _CONFIG_VARS['srcdir'])
_CONFIG_VARS['srcdir'] = os.path.normpath(srcdir)
# OS X platforms require special customization to handle
# multi-architecture, multi-os-version installers
if sys.platform == 'darwin':
kernel_version = os.uname()[2] # Kernel version (8.4.3)
major_version = int(kernel_version.split('.')[0])
if major_version < 8:
# On Mac OS X before 10.4, check if -arch and -isysroot
# are in CFLAGS or LDFLAGS and remove them if they are.
# This is needed when building extensions on a 10.3 system
# using a universal build of python.
for key in ('LDFLAGS', 'BASECFLAGS',
# a number of derived variables. These need to be
# patched up as well.
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
flags = _CONFIG_VARS[key]
flags = re.sub('-arch\s+\w+\s', ' ', flags)
flags = re.sub('-isysroot [^ \t]*', ' ', flags)
_CONFIG_VARS[key] = flags
else:
# Allow the user to override the architecture flags using
# an environment variable.
# NOTE: This name was introduced by Apple in OSX 10.5 and
# is used by several scripting languages distributed with
# that OS release.
if 'ARCHFLAGS' in os.environ:
arch = os.environ['ARCHFLAGS']
for key in ('LDFLAGS', 'BASECFLAGS',
# a number of derived variables. These need to be
# patched up as well.
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
flags = _CONFIG_VARS[key]
flags = re.sub('-arch\s+\w+\s', ' ', flags)
flags = flags + ' ' + arch
_CONFIG_VARS[key] = flags
# If we're on OSX 10.5 or later and the user tries to
# compiles an extension using an SDK that is not present
# on the current machine it is better to not use an SDK
# than to fail.
#
# The major usecase for this is users using a Python.org
# binary installer on OSX 10.6: that installer uses
# the 10.4u SDK, but that SDK is not installed by default
# when you install Xcode.
#
CFLAGS = _CONFIG_VARS.get('CFLAGS', '')
m = re.search('-isysroot\s+(\S+)', CFLAGS)
if m is not None:
sdk = m.group(1)
if not os.path.exists(sdk):
for key in ('LDFLAGS', 'BASECFLAGS',
# a number of derived variables. These need to be
# patched up as well.
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
flags = _CONFIG_VARS[key]
flags = re.sub('-isysroot\s+\S+(\s|$)', ' ', flags)
_CONFIG_VARS[key] = flags
import _osx_support
_osx_support.customize_config_vars(_CONFIG_VARS)
if args:
vals = []
@ -600,91 +547,10 @@ def get_platform():
if m:
release = m.group()
elif osname[:6] == "darwin":
#
# For our purposes, we'll assume that the system version from
# distutils' perspective is what MACOSX_DEPLOYMENT_TARGET is set
# to. This makes the compatibility story a bit more sane because the
# machine is going to compile and link as if it were
# MACOSX_DEPLOYMENT_TARGET.
cfgvars = get_config_vars()
macver = cfgvars.get('MACOSX_DEPLOYMENT_TARGET')
if 1:
# Always calculate the release of the running machine,
# needed to determine if we can build fat binaries or not.
macrelease = macver
# Get the system version. Reading this plist is a documented
# way to get the system version (see the documentation for
# the Gestalt Manager)
try:
f = open('/System/Library/CoreServices/SystemVersion.plist')
except IOError:
# We're on a plain darwin box, fall back to the default
# behaviour.
pass
else:
try:
m = re.search(
r'<key>ProductUserVisibleVersion</key>\s*' +
r'<string>(.*?)</string>', f.read())
if m is not None:
macrelease = '.'.join(m.group(1).split('.')[:2])
# else: fall back to the default behaviour
finally:
f.close()
if not macver:
macver = macrelease
if macver:
release = macver
osname = "macosx"
if (macrelease + '.') >= '10.4.' and \
'-arch' in get_config_vars().get('CFLAGS', '').strip():
# The universal build will build fat binaries, but not on
# systems before 10.4
#
# Try to detect 4-way universal builds, those have machine-type
# 'universal' instead of 'fat'.
machine = 'fat'
cflags = get_config_vars().get('CFLAGS')
archs = re.findall('-arch\s+(\S+)', cflags)
archs = tuple(sorted(set(archs)))
if len(archs) == 1:
machine = archs[0]
elif archs == ('i386', 'ppc'):
machine = 'fat'
elif archs == ('i386', 'x86_64'):
machine = 'intel'
elif archs == ('i386', 'ppc', 'x86_64'):
machine = 'fat3'
elif archs == ('ppc64', 'x86_64'):
machine = 'fat64'
elif archs == ('i386', 'ppc', 'ppc64', 'x86_64'):
machine = 'universal'
else:
raise ValueError(
"Don't know machine value for archs=%r"%(archs,))
elif machine == 'i386':
# On OSX the machine type returned by uname is always the
# 32-bit variant, even if the executable architecture is
# the 64-bit variant
if sys.maxint >= 2**32:
machine = 'x86_64'
elif machine in ('PowerPC', 'Power_Macintosh'):
# Pick a sane name for the PPC architecture.
# See 'i386' case
if sys.maxint >= 2**32:
machine = 'ppc64'
else:
machine = 'ppc'
import _osx_support
osname, release, machine = _osx_support.get_platform_osx(
get_config_vars(),
osname, release, machine)
return "%s-%s-%s" % (osname, release, machine)

279
Lib/test/test__osx_support.py Normal file
View File

@ -0,0 +1,279 @@
"""
Test suite for _osx_support: shared OS X support functions.
"""
import os
import platform
import shutil
import stat
import sys
import unittest
import test.test_support
import _osx_support
@unittest.skipUnless(sys.platform.startswith("darwin"), "requires OS X")
class Test_OSXSupport(unittest.TestCase):
def setUp(self):
self.maxDiff = None
self.prog_name = 'bogus_program_xxxx'
self.temp_path_dir = os.path.abspath(os.getcwd())
self.env = test.test_support.EnvironmentVarGuard()
self.addCleanup(self.env.__exit__)
for cv in ('CFLAGS', 'LDFLAGS', 'CPPFLAGS',
'BASECFLAGS', 'BLDSHARED', 'LDSHARED', 'CC',
'CXX', 'PY_CFLAGS', 'PY_LDFLAGS', 'PY_CPPFLAGS',
'PY_CORE_CFLAGS'):
if cv in self.env:
self.env.unset(cv)
def add_expected_saved_initial_values(self, config_vars, expected_vars):
# Ensure that the initial values for all modified config vars
# are also saved with modified keys.
expected_vars.update(('_OSX_SUPPORT_INITIAL_'+ k,
config_vars[k]) for k in config_vars
if config_vars[k] != expected_vars[k])
def test__find_executable(self):
if self.env['PATH']:
self.env['PATH'] = self.env['PATH'] + ':'
self.env['PATH'] = self.env['PATH'] + os.path.abspath(self.temp_path_dir)
test.test_support.unlink(self.prog_name)
self.assertIsNone(_osx_support._find_executable(self.prog_name))
self.addCleanup(test.test_support.unlink, self.prog_name)
with open(self.prog_name, 'w') as f:
f.write("#!/bin/sh\n/bin/echo OK\n")
os.chmod(self.prog_name, stat.S_IRWXU)
self.assertEqual(self.prog_name,
_osx_support._find_executable(self.prog_name))
def test__read_output(self):
if self.env['PATH']:
self.env['PATH'] = self.env['PATH'] + ':'
self.env['PATH'] = self.env['PATH'] + os.path.abspath(self.temp_path_dir)
test.test_support.unlink(self.prog_name)
self.addCleanup(test.test_support.unlink, self.prog_name)
with open(self.prog_name, 'w') as f:
f.write("#!/bin/sh\n/bin/echo ExpectedOutput\n")
os.chmod(self.prog_name, stat.S_IRWXU)
self.assertEqual('ExpectedOutput',
_osx_support._read_output(self.prog_name))
def test__find_build_tool(self):
out = _osx_support._find_build_tool('cc')
self.assertTrue(os.path.isfile(out),
'cc not found - check xcode-select')
def test__get_system_version(self):
self.assertTrue(platform.mac_ver()[0].startswith(
_osx_support._get_system_version()))
def test__remove_original_values(self):
config_vars = {
'CC': 'gcc-test -pthreads',
}
expected_vars = {
'CC': 'clang -pthreads',
}
cv = 'CC'
newvalue = 'clang -pthreads'
_osx_support._save_modified_value(config_vars, cv, newvalue)
self.assertNotEqual(expected_vars, config_vars)
_osx_support._remove_original_values(config_vars)
self.assertEqual(expected_vars, config_vars)
def test__save_modified_value(self):
config_vars = {
'CC': 'gcc-test -pthreads',
}
expected_vars = {
'CC': 'clang -pthreads',
}
self.add_expected_saved_initial_values(config_vars, expected_vars)
cv = 'CC'
newvalue = 'clang -pthreads'
_osx_support._save_modified_value(config_vars, cv, newvalue)
self.assertEqual(expected_vars, config_vars)
def test__save_modified_value_unchanged(self):
config_vars = {
'CC': 'gcc-test -pthreads',
}
expected_vars = config_vars.copy()
cv = 'CC'
newvalue = 'gcc-test -pthreads'
_osx_support._save_modified_value(config_vars, cv, newvalue)
self.assertEqual(expected_vars, config_vars)
def test__supports_universal_builds(self):
import platform
self.assertEqual(platform.mac_ver()[0].split('.') >= ['10', '4'],
_osx_support._supports_universal_builds())
def test__find_appropriate_compiler(self):
compilers = (
('gcc-test', 'i686-apple-darwin11-llvm-gcc-4.2'),
('clang', 'clang version 3.1'),
)
config_vars = {
'CC': 'gcc-test -pthreads',
'CXX': 'cc++-test',
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch ppc -arch i386 ',
'LDFLAGS': '-arch ppc -arch i386 -g',
'CPPFLAGS': '-I. -isysroot /Developer/SDKs/MacOSX10.4u.sdk',
'BLDSHARED': 'gcc-test -bundle -arch ppc -arch i386 -g',
'LDSHARED': 'gcc-test -bundle -arch ppc -arch i386 '
'-isysroot /Developer/SDKs/MacOSX10.4u.sdk -g',
}
expected_vars = {
'CC': 'clang -pthreads',
'CXX': 'clang++',
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch ppc -arch i386 ',
'LDFLAGS': '-arch ppc -arch i386 -g',
'CPPFLAGS': '-I. -isysroot /Developer/SDKs/MacOSX10.4u.sdk',
'BLDSHARED': 'clang -bundle -arch ppc -arch i386 -g',
'LDSHARED': 'clang -bundle -arch ppc -arch i386 '
'-isysroot /Developer/SDKs/MacOSX10.4u.sdk -g',
}
self.add_expected_saved_initial_values(config_vars, expected_vars)
suffix = (':' + self.env['PATH']) if self.env['PATH'] else ''
self.env['PATH'] = os.path.abspath(self.temp_path_dir) + suffix
for c_name, c_output in compilers:
test.test_support.unlink(c_name)
self.addCleanup(test.test_support.unlink, c_name)
with open(c_name, 'w') as f:
f.write("#!/bin/sh\n/bin/echo " + c_output)
os.chmod(c_name, stat.S_IRWXU)
self.assertEqual(expected_vars,
_osx_support._find_appropriate_compiler(
config_vars))
def test__remove_universal_flags(self):
config_vars = {
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch ppc -arch i386 ',
'LDFLAGS': '-arch ppc -arch i386 -g',
'CPPFLAGS': '-I. -isysroot /Developer/SDKs/MacOSX10.4u.sdk',
'BLDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 -g',
'LDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 '
'-isysroot /Developer/SDKs/MacOSX10.4u.sdk -g',
}
expected_vars = {
'CFLAGS': '-fno-strict-aliasing -g -O3 ',
'LDFLAGS': ' -g',
'CPPFLAGS': '-I. ',
'BLDSHARED': 'gcc-4.0 -bundle -g',
'LDSHARED': 'gcc-4.0 -bundle -g',
}
self.add_expected_saved_initial_values(config_vars, expected_vars)
self.assertEqual(expected_vars,
_osx_support._remove_universal_flags(
config_vars))
def test__remove_unsupported_archs(self):
config_vars = {
'CC': 'clang',
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch ppc -arch i386 ',
'LDFLAGS': '-arch ppc -arch i386 -g',
'CPPFLAGS': '-I. -isysroot /Developer/SDKs/MacOSX10.4u.sdk',
'BLDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 -g',
'LDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 '
'-isysroot /Developer/SDKs/MacOSX10.4u.sdk -g',
}
expected_vars = {
'CC': 'clang',
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch i386 ',
'LDFLAGS': ' -arch i386 -g',
'CPPFLAGS': '-I. -isysroot /Developer/SDKs/MacOSX10.4u.sdk',
'BLDSHARED': 'gcc-4.0 -bundle -arch i386 -g',
'LDSHARED': 'gcc-4.0 -bundle -arch i386 '
'-isysroot /Developer/SDKs/MacOSX10.4u.sdk -g',
}
self.add_expected_saved_initial_values(config_vars, expected_vars)
suffix = (':' + self.env['PATH']) if self.env['PATH'] else ''
self.env['PATH'] = os.path.abspath(self.temp_path_dir) + suffix
c_name = 'clang'
test.test_support.unlink(c_name)
self.addCleanup(test.test_support.unlink, c_name)
# exit status 255 means no PPC support in this compiler chain
with open(c_name, 'w') as f:
f.write("#!/bin/sh\nexit 255")
os.chmod(c_name, stat.S_IRWXU)
self.assertEqual(expected_vars,
_osx_support._remove_unsupported_archs(
config_vars))
def test__override_all_archs(self):
self.env['ARCHFLAGS'] = '-arch x86_64'
config_vars = {
'CC': 'clang',
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch ppc -arch i386 ',
'LDFLAGS': '-arch ppc -arch i386 -g',
'CPPFLAGS': '-I. -isysroot /Developer/SDKs/MacOSX10.4u.sdk',
'BLDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 -g',
'LDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 '
'-isysroot /Developer/SDKs/MacOSX10.4u.sdk -g',
}
expected_vars = {
'CC': 'clang',
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch x86_64',
'LDFLAGS': ' -g -arch x86_64',
'CPPFLAGS': '-I. -isysroot /Developer/SDKs/MacOSX10.4u.sdk',
'BLDSHARED': 'gcc-4.0 -bundle -g -arch x86_64',
'LDSHARED': 'gcc-4.0 -bundle -isysroot '
'/Developer/SDKs/MacOSX10.4u.sdk -g -arch x86_64',
}
self.add_expected_saved_initial_values(config_vars, expected_vars)
self.assertEqual(expected_vars,
_osx_support._override_all_archs(
config_vars))
def test__check_for_unavailable_sdk(self):
config_vars = {
'CC': 'clang',
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch ppc -arch i386 '
'-isysroot /Developer/SDKs/MacOSX10.1.sdk',
'LDFLAGS': '-arch ppc -arch i386 -g',
'CPPFLAGS': '-I. -isysroot /Developer/SDKs/MacOSX10.1.sdk',
'BLDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 -g',
'LDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 '
'-isysroot /Developer/SDKs/MacOSX10.1.sdk -g',
}
expected_vars = {
'CC': 'clang',
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch ppc -arch i386 '
' ',
'LDFLAGS': '-arch ppc -arch i386 -g',
'CPPFLAGS': '-I. ',
'BLDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 -g',
'LDSHARED': 'gcc-4.0 -bundle -arch ppc -arch i386 '
' -g',
}
self.add_expected_saved_initial_values(config_vars, expected_vars)
self.assertEqual(expected_vars,
_osx_support._check_for_unavailable_sdk(
config_vars))
def test_get_platform_osx(self):
# Note, get_platform_osx is currently tested more extensively
# indirectly by test_sysconfig and test_distutils
config_vars = {
'CFLAGS': '-fno-strict-aliasing -g -O3 -arch ppc -arch i386 '
'-isysroot /Developer/SDKs/MacOSX10.1.sdk',
'MACOSX_DEPLOYMENT_TARGET': '10.6',
}
result = _osx_support.get_platform_osx(config_vars, ' ', ' ', ' ')
self.assertEqual(('macosx', '10.6', 'fat'), result)
def test_main():
if sys.platform == 'darwin':
test.test_support.run_unittest(Test_OSXSupport)
if __name__ == "__main__":
test_main()

9
Lib/test/test_sysconfig.py
View File

@ -14,6 +14,7 @@ from sysconfig import (get_paths, get_platform, get_config_vars,
get_path, get_path_names, _INSTALL_SCHEMES,
_get_default_scheme, _expand_vars,
get_scheme_names, get_config_var)
import _osx_support
class TestSysConfig(unittest.TestCase):
@ -137,6 +138,7 @@ class TestSysConfig(unittest.TestCase):
('Darwin Kernel Version 8.11.1: '
'Wed Oct 10 18:23:28 PDT 2007; '
'root:xnu-792.25.20~1/RELEASE_I386'), 'PowerPC'))
_osx_support._remove_original_values(get_config_vars())
get_config_vars()['MACOSX_DEPLOYMENT_TARGET'] = '10.3'
get_config_vars()['CFLAGS'] = ('-fno-strict-aliasing -DNDEBUG -g '
@ -156,6 +158,7 @@ class TestSysConfig(unittest.TestCase):
('Darwin Kernel Version 8.11.1: '
'Wed Oct 10 18:23:28 PDT 2007; '
'root:xnu-792.25.20~1/RELEASE_I386'), 'i386'))
_osx_support._remove_original_values(get_config_vars())
get_config_vars()['MACOSX_DEPLOYMENT_TARGET'] = '10.3'
get_config_vars()['CFLAGS'] = ('-fno-strict-aliasing -DNDEBUG -g '
@ -171,6 +174,7 @@ class TestSysConfig(unittest.TestCase):
sys.maxint = maxint
# macbook with fat binaries (fat, universal or fat64)
_osx_support._remove_original_values(get_config_vars())
get_config_vars()['MACOSX_DEPLOYMENT_TARGET'] = '10.4'
get_config_vars()['CFLAGS'] = ('-arch ppc -arch i386 -isysroot '
'/Developer/SDKs/MacOSX10.4u.sdk '
@ -179,6 +183,7 @@ class TestSysConfig(unittest.TestCase):
self.assertEqual(get_platform(), 'macosx-10.4-fat')
_osx_support._remove_original_values(get_config_vars())
get_config_vars()['CFLAGS'] = ('-arch x86_64 -arch i386 -isysroot '
'/Developer/SDKs/MacOSX10.4u.sdk '
'-fno-strict-aliasing -fno-common '
@ -186,18 +191,21 @@ class TestSysConfig(unittest.TestCase):
self.assertEqual(get_platform(), 'macosx-10.4-intel')
_osx_support._remove_original_values(get_config_vars())
get_config_vars()['CFLAGS'] = ('-arch x86_64 -arch ppc -arch i386 -isysroot '
'/Developer/SDKs/MacOSX10.4u.sdk '
'-fno-strict-aliasing -fno-common '
'-dynamic -DNDEBUG -g -O3')
self.assertEqual(get_platform(), 'macosx-10.4-fat3')
_osx_support._remove_original_values(get_config_vars())
get_config_vars()['CFLAGS'] = ('-arch ppc64 -arch x86_64 -arch ppc -arch i386 -isysroot '
'/Developer/SDKs/MacOSX10.4u.sdk '
'-fno-strict-aliasing -fno-common '
'-dynamic -DNDEBUG -g -O3')
self.assertEqual(get_platform(), 'macosx-10.4-universal')
_osx_support._remove_original_values(get_config_vars())
get_config_vars()['CFLAGS'] = ('-arch x86_64 -arch ppc64 -isysroot '
'/Developer/SDKs/MacOSX10.4u.sdk '
'-fno-strict-aliasing -fno-common '
@ -206,6 +214,7 @@ class TestSysConfig(unittest.TestCase):
self.assertEqual(get_platform(), 'macosx-10.4-fat64')
for arch in ('ppc', 'i386', 'x86_64', 'ppc64'):
_osx_support._remove_original_values(get_config_vars())
get_config_vars()['CFLAGS'] = ('-arch %s -isysroot '
'/Developer/SDKs/MacOSX10.4u.sdk '
'-fno-strict-aliasing -fno-common '

15
Misc/NEWS
View File

@ -679,6 +679,21 @@ Extension Modules
- Issue #16012: Fix a regression in pyexpat. The parser's UseForeignDTD()
method doesn't require an argument again.
- Issue #13590: OS X Xcode 4 - improve support for universal extension modules
In particular, fix extension module build failures when trying to use
32-bit-only installer Pythons on systems with Xcode 4 (currently
OS X 10.8, 10.7, and optionally 10.6).
* Backport 3.3.0 fixes to 2.7 branch (for release in 2.7.4)
* Since Xcode 4 removes ppc support, extension module builds now
check for ppc compiler support and by default remove ppc and
ppc64 archs when they are not available.
* Extension module builds now revert to using system installed
headers and libs (/usr and /System/Library) if the SDK used
to build the interpreter is not installed or has moved.
* Try to avoid building extension modules with deprecated
and problematic Apple llvm-gcc compiler. If original compiler
is not available, use clang instead by default.
Tests
-----