diff -r 224906e4600c -r 075cb0ede3ae libpurple/plugins/caesarcipher.h
--- a/libpurple/plugins/caesarcipher.h	Sun Sep 22 18:38:37 2013 +0530
+++ b/libpurple/plugins/caesarcipher.h	Sun Sep 22 18:46:23 2013 +0530
@@ -23,6 +23,22 @@
 #ifndef _CAESAR_CIPHER_H_
 #define _CAESAR_CIPHER_H_
 
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifndef G_GNUC_NULL_TERMINATED
+# if __GNUC__ >= 4
+#  define G_GNUC_NULL_TERMINATED __attribute__((__sentinel__))
+# else
+#  define G_GNUC_NULL_TERMINATED
+# endif
+#endif
+
+#ifndef PURPLE_PLUGINS
+# define PURPLE_PLUGINS
+#endif
+
 #include "cipher.h"
 #include "plugins.h"