Anticipated fixes for OS X 10.10 Yosemite

[Python Issue #21811] -- http://bugs.python.org/issue21811
[MacPorts Ticket #44994] -- https://trac.macports.org/ticket/44994

Fix various bits of version detection that assumed that the OS minor
version would always be a single digit.

Originally fixed in 2.7 by Ned Deily <nad@acm.org>:
- https://hg.python.org/cpython/rev/a7ab09e00dbc
- https://hg.python.org/cpython/rev/2672e30d9095

Adapted for 2.6.

Signed-off-by: Lawrence Velázquez <larryv@macports.org>
Index: Lib/distutils/util.py
===================================================================
--- Lib/distutils/util.py.orig
+++ Lib/distutils/util.py
@@ -132,7 +132,16 @@ def get_platform ():
             release = macver
             osname = "macosx"
 
-            if (macrelease + '.') >= '10.4.' and \
+            if macrelease:
+                try:
+                    macrelease = tuple(int(i) for i in macrelease.split('.')[0:2])
+                except ValueError:
+                    macrelease = (10, 0)
+            else:
+                # assume no universal support
+                macrelease = (10, 0)
+
+            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
Index: Mac/BuildScript/build-installer.py
===================================================================
--- Mac/BuildScript/build-installer.py.orig
+++ Mac/BuildScript/build-installer.py
@@ -105,14 +105,19 @@ SRCDIR = os.path.dirname(
 # $MACOSX_DEPLOYMENT_TARGET -> minimum OS X level
 DEPTARGET = '10.3'
 
-target_cc_map = {
+def getDeptargetTuple():
+    return tuple([int(n) for n in DEPTARGET.split('.')[0:2]])
+
+def getTargetCompiler():
+    target_cc_map = {
         '10.3': 'gcc-4.0',
         '10.4': 'gcc-4.0',
         '10.5': 'gcc-4.0',
         '10.6': 'gcc-4.2',
-}
+    }
+    return target_cc_map.get(DEPTARGET, 'clang')
 
-CC = target_cc_map[DEPTARGET]
+CC = getTargetCompiler()
 
 USAGE = textwrap.dedent("""\
     Usage: build_python [options]
@@ -136,7 +141,7 @@ USAGE = textwrap.dedent("""\
 def library_recipes():
     result = []
 
-    if DEPTARGET < '10.5':
+    if getDeptargetTuple() < (10, 5):
         result.extend([
           dict(
               name="Bzip2 1.0.5",
@@ -307,7 +312,7 @@ def pkg_recipes():
         ),
     ]
 
-    if DEPTARGET < '10.4':
+    if getDeptargetTuple() < (10, 4):
         result.append(
             dict(
                 name="PythonSystemFixes",
@@ -497,7 +502,7 @@ def parseOptions(args=None):
     SDKPATH=os.path.abspath(SDKPATH)
     DEPSRC=os.path.abspath(DEPSRC)
 
-    CC=target_cc_map[DEPTARGET]
+    CC=getTargetCompiler()
 
     print "Settings:"
     print " * Source directory:", SRCDIR
Index: configure
===================================================================
--- configure.orig
+++ configure
@@ -5313,8 +5313,14 @@ $as_echo "$CC" >&6; }
 
 	    # Calculate the right deployment target for this build.
 	    #
-	    cur_target=`sw_vers -productVersion | sed 's/\(10\.[0-9]*\).*/\1/'`
-	    if test ${cur_target} '>' 10.2; then
+	    cur_target_major=`sw_vers -productVersion | \
+			    sed 's/\([0-9]*\)\.\([0-9]*\).*/\1/'`
+	    cur_target_minor=`sw_vers -productVersion | \
+			    sed 's/\([0-9]*\)\.\([0-9]*\).*/\2/'`
+	    cur_target="${cur_target_major}.${cur_target_minor}"
+	    if test ${cur_target_major} -eq 10 && \
+	       test ${cur_target_minor} -ge 3
+	    then
 		    cur_target=10.3
 		    if test ${enable_universalsdk}; then
 			    if test "${UNIVERSAL_ARCHS}" = "all"; then
@@ -7366,14 +7372,14 @@ then
 		# Use -undefined dynamic_lookup whenever possible (10.3 and later).
 		# This allows an extension to be used in any Python
 
-		if test ${MACOSX_DEPLOYMENT_TARGET} '>' 10.2
+		dep_target_major=`echo ${MACOSX_DEPLOYMENT_TARGET} | \
+				sed 's/\([0-9]*\)\.\([0-9]*\).*/\1/'`
+		dep_target_minor=`echo ${MACOSX_DEPLOYMENT_TARGET} | \
+				sed 's/\([0-9]*\)\.\([0-9]*\).*/\2/'`
+		if test ${dep_target_major} -eq 10 && \
+		   test ${dep_target_minor} -le 2
 		then
-			if test "${enable_universalsdk}"; then
-				LDFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${LDFLAGS}"
-			fi
-			LDSHARED='$(CC) $(LDFLAGS) -bundle -undefined dynamic_lookup'
-			BLDSHARED="$LDSHARED"
-		else
+			# building for OS X 10.0 through 10.2
 			LDSHARED='$(CC) $(LDFLAGS) -bundle'
 			if test "$enable_framework" ; then
 				# Link against the framework. All externals should be defined.
@@ -7384,6 +7390,13 @@ then
 				BLDSHARED="$LDSHARED "'-bundle_loader $(BUILDPYTHON)'
 				LDSHARED="$LDSHARED "'-bundle_loader $(BINDIR)/python$(VERSION)$(EXE)'
 			fi
+		else
+			# building for OS X 10.3 and later
+			if test "${enable_universalsdk}"; then
+				LDFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${LDFLAGS}"
+			fi
+			LDSHARED='$(CC) $(LDFLAGS) -bundle -undefined dynamic_lookup'
+			BLDSHARED="$LDSHARED"
 		fi
 		;;
 	Linux*|GNU*|QNX*) LDSHARED='$(CC) -shared';;
Index: setup.py
===================================================================
--- setup.py.orig
+++ setup.py
@@ -637,7 +637,9 @@ class PyBuildExt(build_ext):
         if platform == 'darwin':
             os_release = int(os.uname()[2].split('.')[0])
             dep_target = sysconfig.get_config_var('MACOSX_DEPLOYMENT_TARGET')
-            if dep_target and dep_target.split('.') < ['10', '5']:
+            if (dep_target and
+                    (tuple(int(n) for n in dep_target.split('.')[0:2])
+                        < (10, 5) ) ):
                 os_release = 8
             if os_release < 9:
                 # MacOSX 10.4 has a broken readline. Don't try to build