Add extern to *_main global variable declarations in header files.

[vpp.git] / src / vnet / l2 / l2_learn.h

diff --git a/src/vnet/l2/l2_learn.h b/src/vnet/l2/l2_learn.h
index 3aaf48e..c107145 100644 (file)
--- a/src/vnet/l2/l2_learn.h
+++ b/src/vnet/l2/l2_learn.h
@@ -48,7 +48,7 @@ typedef struct
 
 #define L2LEARN_DEFAULT_LIMIT (L2FIB_NUM_BUCKETS * 64)
 
-l2learn_main_t l2learn_main;
+extern l2learn_main_t l2learn_main;
 
 extern vlib_node_registration_t l2fib_mac_age_scanner_process_node;