+
+#ifdef __WXOSX_MAC__
+# if defined(__MACH__)
+# 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
+# ifndef MAC_OS_X_VERSION_10_6
+# define MAC_OS_X_VERSION_10_6 1060
+# endif
+# ifndef MAC_OS_X_VERSION_10_7
+# define MAC_OS_X_VERSION_10_7 1070
+# endif
+# ifndef MAC_OS_X_VERSION_10_8
+# define MAC_OS_X_VERSION_10_8 1080
+# endif
+# else
+# error "only mach-o configurations are supported"
+# endif
+#endif
+
+/*
+ __WXOSX_OR_COCOA__ is a common define to wxOSX (Carbon or Cocoa) and wxCocoa ports under OS X.
+
+ DO NOT use this define in base library code. Although wxMac has its own
+ private base library (and thus __WXOSX_OR_COCOA__,__WXMAC__ and related defines are
+ valid there), wxCocoa shares its library with other ports like wxGTK and wxX11.
+
+ To keep wx authors from screwing this up, only enable __WXOSX_OR_COCOA__ for wxCocoa when
+ not compiling the base library. We determine this by first checking if
+ wxUSE_BASE is not defined. If it is not defined, then we're not buildling
+ the base library, and possibly not building wx at all (but actually building
+ user code that's using wx). If it is defined then we must check to make sure
+ it is not true. If it is true, we're building base.
+
+ If you want it in the common darwin base library then use __DARWIN__. You
+ can use any Darwin-available libraries like CoreFoundation but please avoid
+ using OS X libraries like Carbon or CoreServices.
+
+ */
+#if defined(__WXOSX__) || (defined(__WXCOCOA__) && (!defined(wxUSE_BASE) || !wxUSE_BASE))
+# define __WXOSX_OR_COCOA__ 1
+#endif
+