diff --git a/components/bt/esp_ble_mesh/lib/ext.c b/components/bt/esp_ble_mesh/lib/ext.c
index 5d0981ced3..b09e152c13 100644
--- a/components/bt/esp_ble_mesh/lib/ext.c
+++ b/components/bt/esp_ble_mesh/lib/ext.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2023-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2023-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -81,6 +81,22 @@
 #define RPL(a)          ((struct bt_mesh_rpl *)(a))
 #define VOID(a)         ((void *)(a))
 
+/* Declare Lib Variables */
+uint8_t __meshlib_var_BLE_MESH_ADV_PROV = BLE_MESH_ADV_PROV;
+uint8_t __meshlib_var_BLE_MESH_ADV_DATA = BLE_MESH_ADV_DATA;
+#if CONFIG_BLE_MESH_FRIEND
+uint8_t __meshlib_var_BLE_MESH_ADV_FRIEND = BLE_MESH_ADV_FRIEND;
+#endif
+#if CONFIG_BLE_MESH_RELAY_ADV_BUF
+uint8_t __meshlib_var_BLE_MESH_ADV_RELAY_DATA = BLE_MESH_ADV_RELAY_DATA;
+#endif
+uint8_t __meshlib_var_BLE_MESH_ADV_BEACON = BLE_MESH_ADV_BEACON;
+uint8_t __meshlib_var_BLE_MESH_ADV_URI = BLE_MESH_ADV_URI;
+#if CONFIG_BLE_MESH_SUPPORT_BLE_ADV
+uint8_t __meshlib_var_BLE_MESH_ADV_BLE = BLE_MESH_ADV_BLE;
+#endif
+uint8_t __meshlib_var_BLE_MESH_ADV_TYPES_NUM = BLE_MESH_ADV_TYPES_NUM;
+
 /* Sys utilities */
 void bt_mesh_ext_put_be16(uint16_t val, uint8_t dst[2])
 {