#ifndef _WX_MAC_COREFOUNDATION_CFREF_H__
#define _WX_MAC_COREFOUNDATION_CFREF_H__
+// Include unistd to ensure that NULL is defined
+#include <unistd.h>
+// Include AvailabilityMacros for DEPRECATED_ATTRIBUTE
+#include <AvailabilityMacros.h>
+
// #include <CoreFoundation/CFBase.h>
/* Don't include CFBase.h such that this header can be included from public
* headers with minimal namespace pollution.