diff --git a/Mac/Modules/MacOS.c b/Mac/Modules/MacOS.c
index 99e531b..9148fe0 100644
--- a/Mac/Modules/MacOS.c
+++ b/Mac/Modules/MacOS.c
@@ -30,6 +30,9 @@
 #include <Carbon/Carbon.h>
 #include <ApplicationServices/ApplicationServices.h>
 
+#ifndef HAVE_MACOS105_SDK
+typedef SInt16	FSIORefNum;
+#endif
 
 static PyObject *MacOS_Error; /* Exception MacOS.Error */
 
diff --git a/Mac/Modules/ae/_AEmodule.c b/Mac/Modules/ae/_AEmodule.c
index dd154c7..e12a30c 100644
--- a/Mac/Modules/ae/_AEmodule.c
+++ b/Mac/Modules/ae/_AEmodule.c
@@ -7,6 +7,10 @@
 
 #include "pymactoolbox.h"
 
+#ifndef HAVE_OSX105_SDK
+typedef SInt32 SRefCon;
+#endif
+
 /* Macro to test whether a weak-loaded CFM function exists */
 #define PyMac_PRECHECK(rtn) do { if ( &rtn == NULL )  {\
         PyErr_SetString(PyExc_NotImplementedError, \
diff --git a/Mac/Modules/file/_Filemodule.c b/Mac/Modules/file/_Filemodule.c
index 8ff007f..352ef64 100644
--- a/Mac/Modules/file/_Filemodule.c
+++ b/Mac/Modules/file/_Filemodule.c
@@ -7,6 +7,10 @@
 
 #include "pymactoolbox.h"
 
+#ifndef HAVE_MACOS105_SDK
+typedef SInt16	FSIORefNum;
+#endif
+
 /* Macro to test whether a weak-loaded CFM function exists */
 #define PyMac_PRECHECK(rtn) do { if ( &rtn == NULL )  {\
         PyErr_SetString(PyExc_NotImplementedError, \
@@ -193,10 +197,6 @@
 static void FSCatalogInfo_dealloc(FSCatalogInfoObject *self)
 {
 	/* Cleanup of self->ob_itself goes here */
-	FSPermissionInfo* info = (FSPermissionInfo*)&(self->ob_itself.permissions);
-	if (info->fileSec != NULL) {
-		CFRelease(info->fileSec);
-	}
 	self->ob_type->tp_free((PyObject *)self);
 }
 
diff --git a/configure b/configure
index 6b94232..2abce67 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 63690 .
+# From configure.in Revision: 63955 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for python 2.6.
 #
@@ -4659,6 +4659,7 @@
 
 
 		BASECFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${BASECFLAGS}"
+		CFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${CFLAGS}"
 	    fi
 
 	    ;;
@@ -12400,6 +12401,7 @@
 echo "${ECHO_T}$enable_toolbox_glue" >&6; }
 
 
+
 case $ac_sys_system/$ac_sys_release in
   Darwin/[01567]\..*)
     OTHER_LIBTOOL_OPT="-prebind -seg1addr 0x10000000"
@@ -12746,6 +12748,7 @@
 echo "${ECHO_T}$LINKFORSHARED" >&6; }
 
 
+
 { echo "$as_me:$LINENO: checking CFLAGSFORSHARED" >&5
 echo $ECHO_N "checking CFLAGSFORSHARED... $ECHO_C" >&6; }
 if test ! "$LIBRARY" = "$LDLIBRARY"
@@ -15309,6 +15312,58 @@
 	fi
 fi
 
+{ echo "$as_me:$LINENO: checking for OSX 10.5 SDK or later" >&5
+echo $ECHO_N "checking for OSX 10.5 SDK or later... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <Carbon/Carbon.h>
+int
+main ()
+{
+FSIORefNum fRef = 0
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_OSX105_SDK 1
+_ACEOF
+
+  { echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6; }
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	{ echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6; }
+
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
 # Check for --with-doc-strings
 { echo "$as_me:$LINENO: checking for --with-doc-strings" >&5
 echo $ECHO_N "checking for --with-doc-strings... $ECHO_C" >&6; }
diff --git a/configure.in b/configure.in
index 6e8b9fe..2dea658 100644
--- a/configure.in
+++ b/configure.in
@@ -918,6 +918,7 @@
 
 
 		BASECFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${BASECFLAGS}"
+		CFLAGS="${UNIVERSAL_ARCH_FLAGS} -isysroot ${UNIVERSALSDK} ${CFLAGS}"
 	    fi
 
 	    ;;
@@ -1456,6 +1457,7 @@
 esac
 AC_MSG_RESULT($enable_toolbox_glue)
 
+
 AC_SUBST(OTHER_LIBTOOL_OPT)
 case $ac_sys_system/$ac_sys_release in
   Darwin/@<:@01567@:>@\..*) 
@@ -1781,6 +1783,7 @@
 fi
 AC_MSG_RESULT($LINKFORSHARED)
 
+
 AC_SUBST(CFLAGSFORSHARED)
 AC_MSG_CHECKING(CFLAGSFORSHARED)
 if test ! "$LIBRARY" = "$LDLIBRARY"
@@ -2297,6 +2300,13 @@
 	fi
 fi
 
+AC_MSG_CHECKING(for OSX 10.5 SDK or later)
+AC_TRY_COMPILE([#include <Carbon/Carbon.h>], FSIORefNum fRef = 0,
+  AC_DEFINE(HAVE_OSX105_SDK, 1, Define if compiling using MacOS X 10.5 SDK or later.)
+  AC_MSG_RESULT(yes),
+  AC_MSG_RESULT(no)
+)
+
 # Check for --with-doc-strings
 AC_MSG_CHECKING(for --with-doc-strings)
 AC_ARG_WITH(doc-strings,
diff --git a/pyconfig.h.in b/pyconfig.h.in
index 781597f..2899152 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -426,6 +426,9 @@
 /* Define to 1 if you have the `openpty' function. */
 #undef HAVE_OPENPTY
 
+/* Define if compiling using MacOS X 10.5 SDK or later. */
+#undef HAVE_OSX105_SDK
+
 /* Define to 1 if you have the `pathconf' function. */
 #undef HAVE_PATHCONF
 
@@ -489,9 +492,6 @@
 /* Define if you have readline 4.2 */
 #undef HAVE_RL_COMPLETION_MATCHES
 
-/* Define when using libedit's readline emulation */
-#undef HAVE_RL_DISPM_VFUNC
-
 /* Define if you have readline 4.0 */
 #undef HAVE_RL_PRE_INPUT_HOOK