http://code.google.com/p/rpcs3/source/detail?r=44

wxWidgets/include/wx/features.h

@@ -0,0 +1,64 @@
+/**
+*  Name:        wx/features.h
+*  Purpose:     test macros for the features which might be available in some
+*               wxWidgets ports but not others
+*  Author:      Vadim Zeitlin
+*  Modified by: Ryan Norton (Converted to C)
+*  Created:     18.03.02
+*  RCS-ID:      $Id: features.h 40865 2006-08-27 09:42:42Z VS $
+*  Copyright:   (c) 2002 Vadim Zeitlin <vadim@wxwidgets.org>
+*  Licence:     wxWindows licence
+*/
+
+/* THIS IS A C FILE, DON'T USE C++ FEATURES (IN PARTICULAR COMMENTS) IN IT */
+
+#ifndef _WX_FEATURES_H_
+#define _WX_FEATURES_H_
+
+/*  radio menu items are currently not implemented in wxMotif, use this
+    symbol (kept for compatibility from the time when they were not implemented
+    under other platforms as well) to test for this */
+#if !defined(__WXMOTIF__)
+    #define wxHAS_RADIO_MENU_ITEMS
+#else
+    #undef wxHAS_RADIO_MENU_ITEMS
+#endif
+
+/*  the raw keyboard codes are generated under wxGTK and wxMSW only */
+#if defined(__WXGTK__) || defined(__WXMSW__) || defined(__WXMAC__) \
+    || defined(__WXDFB__)
+    #define wxHAS_RAW_KEY_CODES
+#else
+    #undef wxHAS_RAW_KEY_CODES
+#endif
+
+/*  taskbar is implemented in the major ports */
+#if defined(__WXMSW__) || defined(__WXCOCOA__) \
+    || defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXX11__) \
+    || defined(__WXMAC_OSX__) || defined(__WXCOCOA__)
+    #define wxHAS_TASK_BAR_ICON
+#else
+    #undef wxHAS_TASK_BAR_ICON
+#endif
+
+/*  wxIconLocation appeared in the middle of 2.5.0 so it's handy to have a */
+/*  separate define for it */
+#define wxHAS_ICON_LOCATION
+
+/*  same for wxCrashReport */
+#ifdef __WXMSW__
+    #define wxHAS_CRASH_REPORT
+#else
+    #undef wxHAS_CRASH_REPORT
+#endif
+
+/*  wxRE_ADVANCED is not always available, depending on regex library used
+ *  (it's unavailable only if compiling via configure against system library) */
+#ifndef WX_NO_REGEX_ADVANCED
+    #define wxHAS_REGEX_ADVANCED
+#else
+    #undef wxHAS_REGEX_ADVANCED
+#endif
+
+#endif /*  _WX_FEATURES_H_ */
+