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Issue #19400: Prevent extension module build failures with Xcode 5 on OS X

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10.8+ when using a universal Python that included a PPC architecture,
such as with a python.org 32-bit-only binary installer.
This commit is contained in:
Ned Deily 2013-10-25 16:03:35 -07:00
parent 6fd25c39c4
commit 3d2f68d242
2 changed files with 17 additions and 7 deletions
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20
Lib/_osx_support.py
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@ -235,13 +235,19 @@ def _remove_unsupported_archs(_config_vars):
if re.search('-arch\s+ppc', _config_vars['CFLAGS']) is not None: if re.search('-arch\s+ppc', _config_vars['CFLAGS']) is not None:
# NOTE: Cannot use subprocess here because of bootstrap # NOTE: Cannot use subprocess here because of bootstrap
# issues when building Python itself # issues when building Python itself
status = os.system("'%s' -arch ppc -x c /dev/null 2>/dev/null"%( status = os.system(
_config_vars['CC'].replace("'", "'\"'\"'"),)) """echo 'int main{};' | """
# The Apple compiler drivers return status 255 if no PPC """'%s' -c -arch ppc -x c -o /dev/null /dev/null 2>/dev/null"""
if (status >> 8) == 255: %(_config_vars['CC'].replace("'", "'\"'\"'"),))
# Compiler doesn't support PPC, remove the related if status:
# '-arch' flags if not explicitly overridden by an # The compile failed for some reason. Because of differences
# environment variable # across Xcode and compiler versions, there is no reliable way
# to be sure why it failed. Assume here it was due to lack of
# PPC support and remove the related '-arch' flags from each
# config variables not explicitly overriden by an environment
# variable. If the error was for some other reason, we hope the
# failure will show up again when trying to compile an extension
# module.
for cv in _UNIVERSAL_CONFIG_VARS: for cv in _UNIVERSAL_CONFIG_VARS:
if cv in _config_vars and cv not in os.environ: if cv in _config_vars and cv not in os.environ:
flags = _config_vars[cv] flags = _config_vars[cv]

4
Misc/NEWS
View file

@ -411,6 +411,10 @@ Library
existing directory caused mkstemp and related APIs to fail instead of existing directory caused mkstemp and related APIs to fail instead of
retrying. Report and fix by Vlad Shcherbina. retrying. Report and fix by Vlad Shcherbina.
- Issue #19400: Prevent extension module build failures with Xcode 5 on OS X
10.8+ when using a universal Python that included a PPC architecture,
such as with a python.org 32-bit-only binary installer.
C API C API
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