# if defined(__MACH__)
# define __WXMAC_OSX__
# define __WXMAC_CARBON__
+# include <AvailabilityMacros.h>
+# ifndef MAC_OS_X_VERSION_10_4
+# define MAC_OS_X_VERSION_10_4 1040
+# endif
+# ifndef MAC_OS_X_VERSION_10_5
+# define MAC_OS_X_VERSION_10_5 1050
+# endif
# ifdef __WXMAC_XCODE__
# include <unistd.h>
# include "wx/mac/carbon/config_xcode.h"