X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/540dacb643455dd391e43407ee0b3193467b9ee1..661698e54f2bc599dc1a961ffbae08ccdd6b9b97:/include/wx/defs.h

diff --git a/include/wx/defs.h b/include/wx/defs.h
index e418ef41cd..c9648e8bc8 100644
--- a/include/wx/defs.h
+++ b/include/wx/defs.h
@@ -356,6 +356,32 @@ typedef short int WXTYPE;
     #endif
 #endif
 
+#if defined(__has_include)
+    #if !defined(HAVE_TYPE_TRAITS) && __has_include(<type_traits>)
+        #define HAVE_TYPE_TRAITS
+    #endif
+
+    #if !defined(HAVE_TR1_TYPE_TRAITS) && __has_include(<tr1/type_traits>)
+        #define HAVE_TR1_TYPE_TRAITS
+    #endif
+
+    #if !defined(HAVE_STD_UNORDERED_MAP) && __has_include(<unordered_map>)
+        #define HAVE_STD_UNORDERED_MAP
+    #endif
+
+    #if !defined(HAVE_TR1_UNORDERED_MAP) && __has_include(<tr1/unordered_map>)
+        #define HAVE_TR1_UNORDERED_MAP
+    #endif
+
+    #if !defined(HAVE_STD_UNORDERED_SET) && __has_include(<unordered_set>)
+        #define HAVE_STD_UNORDERED_SET
+    #endif
+
+    #if !defined(HAVE_TR1_UNORDERED_SET) && __has_include(<tr1/unordered_set>)
+        #define HAVE_TR1_UNORDERED_SET
+    #endif
+#endif // defined(__has_include)
+
 /* provide replacement for C99 va_copy() if the compiler doesn't have it */
 
 /* could be already defined by configure or the user */