X-Git-Url: https://git.saurik.com/apple/objc4.git/blobdiff_plain/8972963c21fb120c80c09e06536ba4aa7eb98af3..b496e0986ba6c65ea66cb359f67cc7b28cd37f38:/runtime/objc-api.h

diff --git a/runtime/objc-api.h b/runtime/objc-api.h
index 2fcb92f..94130b9 100644
--- a/runtime/objc-api.h
+++ b/runtime/objc-api.h
@@ -25,6 +25,7 @@
 #ifndef _OBJC_OBJC_API_H_
 #define _OBJC_OBJC_API_H_
 
+#include <Availability.h>
 #include <AvailabilityMacros.h>
 #include <TargetConditionals.h>
 
@@ -32,18 +33,31 @@
 #   define __has_feature(x) 0
 #endif
 
+#ifndef __has_extension
+#   define __has_extension __has_feature
+#endif
+
+
 /*
  * OBJC_API_VERSION 0 or undef: Tiger and earlier API only
  * OBJC_API_VERSION 2: Leopard and later API available
  */
 #if !defined(OBJC_API_VERSION)
-#   if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
+#   if defined(__MAC_OS_X_VERSION_MIN_REQUIRED)  &&  __MAC_OS_X_VERSION_MIN_REQUIRED < __MAC_10_5
 #       define OBJC_API_VERSION 0
 #   else
 #       define OBJC_API_VERSION 2
 #   endif
 #endif
 
+
+/* OBJC_OLD_DISPATCH_PROTOTYPES == 0 enforces the rule that the dispatch 
+ * functions must be cast to an appropriate function pointer type. */
+#if !defined(OBJC_OLD_DISPATCH_PROTOTYPES)
+#   define OBJC_OLD_DISPATCH_PROTOTYPES 1
+#endif
+
+
 /* OBJC2_UNAVAILABLE: unavailable in objc 2.0, deprecated in Leopard */
 #if !defined(OBJC2_UNAVAILABLE)
 #   if __OBJC2__
@@ -56,12 +70,29 @@
 /* OBJC_ARC_UNAVAILABLE: unavailable with -fobjc-arc */
 #if !defined(OBJC_ARC_UNAVAILABLE)
 #   if __has_feature(objc_arr)
-#       define OBJC_ARC_UNAVAILABLE __attribute__((unavailable("not available in automatic reference counting mode")))
+#       if __has_extension(attribute_unavailable_with_message)
+#           define OBJC_ARC_UNAVAILABLE __attribute__((unavailable("not available in automatic reference counting mode")))
+#       else
+#           define OBJC_ARC_UNAVAILABLE __attribute__((unavailable))
+#       endif
 #   else
 #       define OBJC_ARC_UNAVAILABLE
 #   endif
 #endif
 
+/* OBJC_GC_UNAVAILABLE: unavailable with -fobjc-gc or -fobjc-gc-only */
+#if !defined(OBJC_GC_UNAVAILABLE)
+#   if __OBJC_GC__
+#       if __has_extension(attribute_unavailable_with_message)
+#           define OBJC_GC_UNAVAILABLE __attribute__((unavailable("not available in garbage collecting mode")))
+#       else
+#           define OBJC_GC_UNAVAILABLE __attribute__((unavailable))
+#       endif
+#   else
+#       define OBJC_GC_UNAVAILABLE
+#   endif
+#endif
+
 #if !defined(OBJC_EXTERN)
 #   if defined(__cplusplus)
 #       define OBJC_EXTERN extern "C"