Index: src/conky.h
--- src/conky.h.orig
+++ src/conky.h
@@ -206,11 +206,13 @@ enum {
 
 /* if_up strictness selector
  * needed by conky.c and linux.c (and potentially others) */
-enum {
+enum IFUP_STRICTNESS {
 	IFUP_UP,
 	IFUP_LINK,
 	IFUP_ADDR
-} ifup_strictness;
+};
+
+extern enum IFUP_STRICTNESS ifup_strictness;
 
 struct information {
 	unsigned int mask;