Patch #1097739 by Bob Ippolito:
MacOSX: if we cannot use -undefined dynamic_lookup (such as on 10.2 or earlier)
we link extension directly against the dynamic library in the framework in
stead of against the framework. This will fix building extensions for 2.3
after 2.4 has been installed too.
diff --git a/configure.in b/configure.in
index ba56c05..1b9d391 100644
--- a/configure.in
+++ b/configure.in
@@ -1304,8 +1304,8 @@
 		LDSHARED='$(CC) $(LDFLAGS) -bundle'
 		if test "$enable_framework" ; then
 			# Link against the framework. All externals should be defined.
-			BLDSHARED="$LDSHARED "'-Wl,-F. -framework $(PYTHONFRAMEWORK)'
-			LDSHARED="$LDSHARED "'-Wl,-F$(PYTHONFRAMEWORKPREFIX) -framework $(PYTHONFRAMEWORK)'
+			BLDSHARED="$LDSHARED "'$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)'
+			LDSHARED="$LDSHARED "'$(PYTHONFRAMEWORKPREFIX)/$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)'
 		else
 			# No framework. Ignore undefined symbols, assuming they come from Python
 			LDSHARED="$LDSHARED -undefined suppress"
@@ -1314,8 +1314,8 @@
 		LDSHARED='$(CC) $(LDFLAGS) -bundle'
 		if test "$enable_framework" ; then
 			# Link against the framework. All externals should be defined.
-			BLDSHARED="$LDSHARED "'-Wl,-F. -framework $(PYTHONFRAMEWORK)'
-			LDSHARED="$LDSHARED "'-Wl,-F$(PYTHONFRAMEWORKPREFIX) -framework $(PYTHONFRAMEWORK)'
+			BLDSHARED="$LDSHARED "'$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)'
+			LDSHARED="$LDSHARED "'$(PYTHONFRAMEWORKPREFIX)/$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)'
 		else
 			# No framework, use the Python app as bundle-loader
 			BLDSHARED="$LDSHARED "'-bundle_loader $(BUILDPYTHON)'
@@ -1334,8 +1334,8 @@
 			LDSHARED='$(CC) $(LDFLAGS) -bundle'
 			if test "$enable_framework" ; then
 				# Link against the framework. All externals should be defined.
-				BLDSHARED="$LDSHARED "'-Wl,-F. -framework $(PYTHONFRAMEWORK)'
-				LDSHARED="$LDSHARED "'-Wl,-F$(PYTHONFRAMEWORKPREFIX) -framework $(PYTHONFRAMEWORK)'
+				BLDSHARED="$LDSHARED "'$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)'
+				LDSHARED="$LDSHARED "'$(PYTHONFRAMEWORKPREFIX)/$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)'
 			else
 				# No framework, use the Python app as bundle-loader
 				BLDSHARED="$LDSHARED "'-bundle_loader $(BUILDPYTHON)'
@@ -1427,7 +1427,7 @@
 		LINKFORSHARED="$extra_undefs"
 		if test "$enable_framework"
 		then
-			LINKFORSHARED="$LINKFORSHARED -Wl,-F. -framework "'$(PYTHONFRAMEWORK)'
+			LINKFORSHARED="$LINKFORSHARED "'$(PYTHONFRAMEWORKDIR)/Versions/$(VERSION)/$(PYTHONFRAMEWORK)'
 		fi
 		LINKFORSHARED="$LINKFORSHARED";;
 	OpenUNIX*|UnixWare*) LINKFORSHARED="-Wl,-Bexport";;