1 files changed, 13 insertions, 0 deletions
diff --git a/Ivy/IvyStdAfx.h b/Ivy/IvyStdAfx.h
index 13d097c..1c0821b 100644
--- a/Ivy/IvyStdAfx.h
+++ b/Ivy/IvyStdAfx.h
@@ -45,8 +45,21 @@ struct ip_mreq {
 #define IN_CLASSD(i)            (((long)(i) & 0xf0000000) == 0xe0000000)
 #endif
 
+#ifdef IVY_USE_OWN_DATATYPES
+
 #include "DataTypes.h"
 
+#else
+
+#include <string>
+#include <list>
+#include <vector>
+
+namespace ivy =  std; 
+
+#endif
+
+
 #ifdef WIN32 
 
 #ifndef TRACE