Hack references to get the linker using the open lib definitions.

core/app_main.c

@@ -451,3 +451,18 @@ static __attribute__((noinline)) void dump_flash_config_sectors(uint32_t start_s
     dump_flash_sector(start_sector + 3, BOOT_INFO_SIZE);
 }
 
+
+/*
+ * Hack references to dummy functions in open_esplibs object files to
+ * ensure that the linker uses the open definitions rather than the
+ * sdk definitions.
+ */
+
+void libnet80211_hostap_linker_hack();
+void libnet80211_wl_cnx_linker_hack();
+
+void open_esplibs_refs()
+{
+    libnet80211_hostap_linker_hack();
+    libnet80211_wl_cnx_linker_hack();
+}

open_esplibs/libnet80211/ieee80211_hostap.c

@@ -28,4 +28,7 @@ void sdk_hostap_handle_timer(struct sdk_netif_conninfo *cnx_node)
     }
 }
 
+/* Needed to have the linker actually replace the above definitions. */
+void libnet80211_hostap_linker_hack(){}
+
 #endif /* OPEN_LIBNET80211_HOSTAP */

open_esplibs/libnet80211/wl_cnx.c

@@ -31,4 +31,7 @@ void *sdk_cnx_node_search(uint8_t mac[6])
     return NULL;
 }
 
+/* Needed to have the linker actually replace the above definitions. */
+void libnet80211_wl_cnx_linker_hack(){}
+
 #endif /* OPEN_LIBNET80211_WL_CNX */