Index: trunk/Ohana/src/libohana/include/dvo.h
===================================================================
--- trunk/Ohana/src/libohana/include/dvo.h	(revision 3516)
+++ trunk/Ohana/src/libohana/include/dvo.h	(revision 3517)
@@ -1,2 +1,5 @@
+
+# ifndef DVO_H
+# define DVO_H
 
 # define ELIXIR    1
@@ -148,2 +151,4 @@
 int   ByteSwap (char *ptr, int size, int nitems, char *type);
 int   ConvertStruct (char *buffer, int size, int Nbytes, char *type);
+
+# endif