+// Define helper macros allowing to insert small snippets of code to be
+// compiled for high enough OS X version only: this shouldn't be abused for
+// anything big but it's handy for e.g. specifying OS X 10.6-only protocols in
+// the Objective C classes declarations when they're not supported under the
+// previous versions
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+ #define wxOSX_10_6_AND_LATER(x) x
+#else
+ #define wxOSX_10_6_AND_LATER(x)
+#endif
+