--- /dev/null
+--- a/lib/prefix.h
++++ b/lib/prefix.h
+@@ -44,7 +44,7 @@
+ */
+ struct ethaddr {
+ u_char octet[ETHER_ADDR_LEN];
+-} __packed;
++} __attribute__((packed));
+
+
+ /*
+--- a/pimd/pimd.h
++++ b/pimd/pimd.h
+@@ -74,25 +74,25 @@ const char *const PIM_ALL_PIM_ROUTERS;
+ const char *const PIM_ALL_IGMP_ROUTERS;
+
+ struct thread_master *master;
+-uint32_t qpim_debugs;
+-int qpim_mroute_socket_fd;
++extern uint32_t qpim_debugs;
++extern int qpim_mroute_socket_fd;
+ int64_t qpim_mroute_socket_creation; /* timestamp of creation */
+ struct thread *qpim_mroute_socket_reader;
+-int qpim_mroute_oif_highest_vif_index;
+-struct list *qpim_channel_oil_list; /* list of struct channel_oil */
+-struct in_addr qpim_all_pim_routers_addr;
++extern int qpim_mroute_oif_highest_vif_index;
++extern struct list *qpim_channel_oil_list; /* list of struct channel_oil */
++extern struct in_addr qpim_all_pim_routers_addr;
+ int qpim_t_periodic; /* Period between Join/Prune Messages */
+-struct list *qpim_upstream_list; /* list of struct pim_upstream */
++extern struct list *qpim_upstream_list; /* list of struct pim_upstream */
+ struct zclient *qpim_zclient_update;
+ struct zclient *qpim_zclient_lookup;
+-struct pim_assert_metric qpim_infinite_assert_metric;
++extern struct pim_assert_metric qpim_infinite_assert_metric;
+ long qpim_rpf_cache_refresh_delay_msec;
+ struct thread *qpim_rpf_cache_refresher;
+-int64_t qpim_rpf_cache_refresh_requests;
+-int64_t qpim_rpf_cache_refresh_events;
+-int64_t qpim_rpf_cache_refresh_last;
+-struct in_addr qpim_inaddr_any;
+-struct list *qpim_ssmpingd_list; /* list of struct ssmpingd_sock */
++extern int64_t qpim_rpf_cache_refresh_requests;
++extern int64_t qpim_rpf_cache_refresh_events;
++extern int64_t qpim_rpf_cache_refresh_last;
++extern struct in_addr qpim_inaddr_any;
++extern struct list *qpim_ssmpingd_list; /* list of struct ssmpingd_sock */
+ struct in_addr qpim_ssmpingd_group_addr;
+ int64_t qpim_scan_oil_events;
+ int64_t qpim_scan_oil_last;
+@@ -100,7 +100,7 @@ int64_t qpim_mroute_add_events;
+ int64_t qpim_mroute_add_last;
+ int64_t qpim_mroute_del_events;
+ int64_t qpim_mroute_del_last;
+-struct list *qpim_static_route_list; /* list of routes added statically */
++extern struct list *qpim_static_route_list; /* list of routes added statically */
+
+ #define PIM_JP_HOLDTIME (qpim_t_periodic * 7 / 2)
+