--- /usr/include/AvailabilityMacros.h	2008-02-27 06:49:24.000000000 +0000
+++ /usr/include/AvailabilityMacros.h	2008-03-28 14:10:13.000000000 +0000
@@ -84,7 +84,13 @@
     #ifdef __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
         #define MAC_OS_X_VERSION_MIN_REQUIRED __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
     #else
-        #if __ppc64__ || __i386__ || __x86_64__
+        #ifdef __ENVIRONMENT_ASPEN_VERSION_MIN_REQUIRED__
+            #if __ENVIRONMENT_ASPEN_VERSION_MIN_REQUIRED__ < 10200
+                #define MAC_OS_X_VERSION_MIN_REQUIRED MAC_OS_X_VERSION_10_4
+            #else
+                #define MAC_OS_X_VERSION_MIN_REQUIRED MAC_OS_X_VERSION_10_5
+            #endif
+        #elif __ppc64__ || __i386__ || __x86_64__
             #define MAC_OS_X_VERSION_MIN_REQUIRED MAC_OS_X_VERSION_10_4
 		#elif __arm__
 			#define MAC_OS_X_VERSION_MIN_REQUIRED MAC_OS_X_VERSION_10_5