sync code with last improvements from OpenBSD

xserver/hw/xquartz/sanitizedCocoa.h

@@ -0,0 +1,64 @@
+/*
+ * Don't #include any of the AppKit, etc stuff directly since it will
+ * pollute the X11 namespace.
+ */
+
+#ifndef _XQ_SANITIZED_COCOA_H_
+#define _XQ_SANITIZED_COCOA_H_
+
+// QuickDraw in ApplicationServices has the following conflicts with
+// the basic X server headers. Use QD_<name> to use the QuickDraw
+// definition of any of these symbols, or the normal name for the
+// X11 definition.
+#define Cursor    QD_Cursor
+#define WindowPtr QD_WindowPtr
+#define Picture   QD_Picture
+#define BOOL      OSX_BOOL
+#define EventType HIT_EventType
+
+#import <Cocoa/Cocoa.h>
+#import <Foundation/Foundation.h>
+
+#undef Cursor
+#undef WindowPtr
+#undef Picture
+#undef BOOL
+#undef EventType
+
+#ifndef __has_feature
+#define __has_feature(x) 0 // Compatibility with non-clang compilers.
+#endif
+
+#ifndef NS_RETURNS_RETAINED
+#if __has_feature(attribute_ns_returns_retained)
+#define NS_RETURNS_RETAINED __attribute__((ns_returns_retained))
+#else
+#define NS_RETURNS_RETAINED
+#endif
+#endif
+
+#ifndef NS_RETURNS_NOT_RETAINED
+#if __has_feature(attribute_ns_returns_not_retained)
+#define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained))
+#else
+#define NS_RETURNS_NOT_RETAINED
+#endif
+#endif
+
+#ifndef CF_RETURNS_RETAINED
+#if __has_feature(attribute_cf_returns_retained)
+#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
+#else
+#define CF_RETURNS_RETAINED
+#endif
+#endif
+
+#ifndef CF_RETURNS_NOT_RETAINED
+#if __has_feature(attribute_cf_returns_not_retained)
+#define CF_RETURNS_NOT_RETAINED __attribute__((cf_returns_not_retained))
+#else
+#define CF_RETURNS_NOT_RETAINED
+#endif
+#endif
+
+#endif  /* _XQ_SANITIZED_COCOA_H_ */