Patch #1488098.
This patchs makes it possible to create a universal build on OSX 10.4 and use
the result to build extensions on 10.3. It also makes it possible to override
the '-arch' and '-isysroot' compiler arguments for specific extensions.
diff --git a/Lib/distutils/util.py b/Lib/distutils/util.py
index 061092b..623c41e 100644
--- a/Lib/distutils/util.py
+++ b/Lib/distutils/util.py
@@ -67,6 +67,54 @@
m = rel_re.match(release)
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 = os.environ.get('MACOSX_DEPLOYMENT_TARGET')
+ if not macver:
+ macver = cfgvars.get('MACOSX_DEPLOYMENT_TARGET')
+
+ if not 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:
+ m = re.search(
+ r'<key>ProductUserVisibleVersion</key>\s*' +
+ r'<string>(.*?)</string>', f.read())
+ f.close()
+ if m is not None:
+ macver = '.'.join(m.group(1).split('.')[:2])
+ # else: fall back to the default behaviour
+
+ if macver:
+ from distutils.sysconfig import get_config_vars
+ release = macver
+ osname = "macosx"
+
+
+ if (release + '.') < '10.4.' and \
+ get_config_vars().get('UNIVERSALSDK', '').strip():
+ # The universal build will build fat binaries, but not on
+ # systems before 10.4
+ machine = 'fat'
+
+ elif machine in ('PowerPC', 'Power_Macintosh'):
+ # Pick a sane name for the PPC architecture.
+ machine = 'ppc'
return "%s-%s-%s" % (osname, release, machine)