diff --git a/CMakeLists.txt b/CMakeLists.txt
index ec4e2bcc66..04fb12f481 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -195,6 +195,7 @@ if(CONFIG_ESP_SYSTEM_USE_EH_FRAME)
 endif()
 
 list(APPEND link_options "-fno-lto")
+list(APPEND link_options "-Wl,--warn-common")
 
 if(CONFIG_IDF_TARGET_LINUX AND CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
     list(APPEND link_options "-Wl,-dead_strip")
diff --git a/components/bt/common/btc/profile/esp/blufi/bluedroid_host/esp_blufi.c b/components/bt/common/btc/profile/esp/blufi/bluedroid_host/esp_blufi.c
index d55007de50..ff0b96600a 100644
--- a/components/bt/common/btc/profile/esp/blufi/bluedroid_host/esp_blufi.c
+++ b/components/bt/common/btc/profile/esp/blufi/bluedroid_host/esp_blufi.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -35,12 +35,6 @@
 
 #if (BLUFI_INCLUDED == TRUE)
 
-#if GATT_DYNAMIC_MEMORY == FALSE
-tBLUFI_ENV blufi_env;
-#else
-tBLUFI_ENV *blufi_env_ptr;
-#endif
-
 static uint8_t server_if;
 static uint16_t conn_id;
 static uint8_t blufi_service_uuid128[32] = {
diff --git a/components/bt/common/btc/profile/esp/blufi/blufi_protocol.c b/components/bt/common/btc/profile/esp/blufi/blufi_protocol.c
index d2828df0d8..24f81c5fab 100644
--- a/components/bt/common/btc/profile/esp/blufi/blufi_protocol.c
+++ b/components/bt/common/btc/profile/esp/blufi/blufi_protocol.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -18,7 +18,6 @@
 
 //#include "esp_wifi.h"
 #if (BLUFI_INCLUDED == TRUE)
-// extern tBLUFI_ENV blufi_env;
 
 void btc_blufi_protocol_handler(uint8_t type, uint8_t *data, int len)
 {
diff --git a/components/bt/host/bluedroid/bta/dm/bta_dm_main.c b/components/bt/host/bluedroid/bta/dm/bta_dm_main.c
index b95a793e23..fdc19fedce 100644
--- a/components/bt/host/bluedroid/bta/dm/bta_dm_main.c
+++ b/components/bt/host/bluedroid/bta/dm/bta_dm_main.c
@@ -42,6 +42,7 @@ tBTA_DM_DI_CB       bta_dm_di_cb;
 tBTA_DM_CB  *bta_dm_cb_ptr;
 tBTA_DM_SEARCH_CB *bta_dm_search_cb_ptr;
 tBTA_DM_DI_CB       *bta_dm_di_cb_ptr;
+SemaphoreHandle_t deinit_semaphore;
 #endif
 
 
diff --git a/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h b/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h
index 8d2f106d0d..30b3b5a995 100644
--- a/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h
+++ b/components/bt/host/bluedroid/bta/dm/include/bta_dm_int.h
@@ -1481,7 +1481,7 @@ extern tBTA_DM_DI_CB  bta_dm_di_cb;
 #else
 extern tBTA_DM_DI_CB *bta_dm_di_cb_ptr;
 #define bta_dm_di_cb (*bta_dm_di_cb_ptr)
-SemaphoreHandle_t deinit_semaphore;
+extern SemaphoreHandle_t deinit_semaphore;
 #endif
 
 #if BTA_DYNAMIC_MEMORY == FALSE
diff --git a/components/bt/host/bluedroid/external/sbc/decoder/srce/dequant.c b/components/bt/host/bluedroid/external/sbc/decoder/srce/dequant.c
index 1d26596016..d165c80a88 100644
--- a/components/bt/host/bluedroid/external/sbc/decoder/srce/dequant.c
+++ b/components/bt/host/bluedroid/external/sbc/decoder/srce/dequant.c
@@ -112,8 +112,8 @@
 #define SBC_DEQUANT_SCALING_FACTOR 1.38019122262781f
 #endif
 
-const OI_UINT32 dequant_long_scaled[17];
-const OI_UINT32 dequant_long_unscaled[17];
+extern const OI_UINT32 dequant_long_scaled[17];
+extern const OI_UINT32 dequant_long_unscaled[17];
 
 /** Scales x by y bits to the right, adding a rounding factor.
  */
diff --git a/components/fatfs/test/test_fatfs_common.h b/components/fatfs/test/test_fatfs_common.h
index 30ee3431e5..46cf3b8909 100644
--- a/components/fatfs/test/test_fatfs_common.h
+++ b/components/fatfs/test/test_fatfs_common.h
@@ -1,16 +1,8 @@
-// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
@@ -30,8 +22,8 @@
         } \
     } while(0)
 
-const char* fatfs_test_hello_str;
-const char* fatfs_test_hello_str_utf;
+extern const char* fatfs_test_hello_str;
+extern const char* fatfs_test_hello_str_utf;
 
 void test_fatfs_create_file_with_text(const char* name, const char* text);
 
diff --git a/components/riscv/include/esp_private/panic_reason.h b/components/riscv/include/esp_private/panic_reason.h
index 6cb14d8c5c..09da6cbb43 100644
--- a/components/riscv/include/esp_private/panic_reason.h
+++ b/components/riscv/include/esp_private/panic_reason.h
@@ -1,19 +1,11 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 #pragma once
 
-enum _panic_reasons {
+typedef enum {
     PANIC_RSN_NONE = 0,
     PANIC_RSN_INTWDT_CPU0,
 #if SOC_CPU_NUM > 1
@@ -24,4 +16,4 @@ enum _panic_reasons {
     PANIC_RSN_MEMPROT,
 #endif
     PANIC_RSN_COUNT
-} panic_reasons;
+} panic_reasons_t;
diff --git a/components/tinyusb/additions/include_private/descriptors_control.h b/components/tinyusb/additions/include_private/descriptors_control.h
index 7f441cc041..63685ef081 100644
--- a/components/tinyusb/additions/include_private/descriptors_control.h
+++ b/components/tinyusb/additions/include_private/descriptors_control.h
@@ -48,7 +48,6 @@ enum {
                        CFG_TUD_HID * TUD_HID_DESC_LEN
 };
 
-bool tusb_desc_set;
 void tusb_set_descriptor(tusb_desc_device_t *desc, const char **str_desc);
 tusb_desc_device_t *tusb_get_active_desc(void);
 char **tusb_get_active_str_desc(void);
diff --git a/components/tinyusb/additions/src/descriptors_control.c b/components/tinyusb/additions/src/descriptors_control.c
index ebeaa20292..02e4a4bf80 100644
--- a/components/tinyusb/additions/src/descriptors_control.c
+++ b/components/tinyusb/additions/src/descriptors_control.c
@@ -171,7 +171,6 @@ void tusb_set_descriptor(tusb_desc_device_t *dev_desc, const char **str_desc)
         memcpy(s_str_descriptor, str_desc,
                sizeof(s_str_descriptor[0])*USB_STRING_DESCRIPTOR_ARRAY_SIZE);
     }
-    tusb_desc_set = true;
 }
 
 tusb_desc_device_t *tusb_get_active_desc(void)
@@ -188,5 +187,4 @@ void tusb_clear_descriptor(void)
 {
     memset(&s_descriptor, 0, sizeof(s_descriptor));
     memset(&s_str_descriptor, 0, sizeof(s_str_descriptor));
-    tusb_desc_set = false;
 }
diff --git a/components/usb/test/common/test_usb_mock_classes.h b/components/usb/test/common/test_usb_mock_classes.h
index b225a37517..f057670e46 100644
--- a/components/usb/test/common/test_usb_mock_classes.h
+++ b/components/usb/test/common/test_usb_mock_classes.h
@@ -21,7 +21,7 @@ extern "C" {
 
 // ---------------------------------------------------- MSC SCSI -------------------------------------------------------
 
-const char *MSC_CLIENT_TAG;
+extern const char *MSC_CLIENT_TAG;
 
 /*
 Note: The mock MSC SCSI tests requires that USB flash drive be connected. The flash drive should...
diff --git a/components/wpa_supplicant/esp_supplicant/include/esp_wpa.h b/components/wpa_supplicant/esp_supplicant/include/esp_wpa.h
index f448b737c7..f79f5c55a6 100644
--- a/components/wpa_supplicant/esp_supplicant/include/esp_wpa.h
+++ b/components/wpa_supplicant/esp_supplicant/include/esp_wpa.h
@@ -1,16 +1,8 @@
-// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef __ESP_WPA_H__
 #define __ESP_WPA_H__
@@ -42,9 +34,10 @@ extern "C" {
   * @{
   */
 /* Crypto callback functions */
-const wpa_crypto_funcs_t g_wifi_default_wpa_crypto_funcs;
+extern const wpa_crypto_funcs_t g_wifi_default_wpa_crypto_funcs; // NOLINT(readability-redundant-declaration)
+
 /* Mesh crypto callback functions */
-const mesh_crypto_funcs_t g_wifi_default_mesh_crypto_funcs;
+extern const mesh_crypto_funcs_t g_wifi_default_mesh_crypto_funcs;
 
 /**
   * @brief     Supplicant initialization
diff --git a/components/wpa_supplicant/src/drivers/driver.h b/components/wpa_supplicant/src/drivers/driver.h
index 22bf5978b9..150002b211 100644
--- a/components/wpa_supplicant/src/drivers/driver.h
+++ b/components/wpa_supplicant/src/drivers/driver.h
@@ -173,7 +173,7 @@ struct scan_info {
 	int nl_scan_event;
 	u64 scan_start_tsf;
 	u8 scan_start_tsf_bssid[ETH_ALEN];
-} scan_info;
+};
 
 struct wpa_bss_trans_info {
 	u8 mbo_transition_reason;
diff --git a/components/wpa_supplicant/src/eap_peer/eap.c b/components/wpa_supplicant/src/eap_peer/eap.c
index 7cc829d0c3..f904148032 100644
--- a/components/wpa_supplicant/src/eap_peer/eap.c
+++ b/components/wpa_supplicant/src/eap_peer/eap.c
@@ -42,6 +42,27 @@
 
 #include "supplicant_opt.h"
 
+u8 *g_wpa_anonymous_identity;
+int g_wpa_anonymous_identity_len;
+u8 *g_wpa_username;
+int g_wpa_username_len;
+const u8 *g_wpa_client_cert;
+int g_wpa_client_cert_len;
+const u8 *g_wpa_private_key;
+int g_wpa_private_key_len;
+const u8 *g_wpa_private_key_passwd;
+int g_wpa_private_key_passwd_len;
+const u8 *g_wpa_ca_cert;
+int g_wpa_ca_cert_len;
+u8 *g_wpa_password;
+int g_wpa_password_len;
+u8 *g_wpa_new_password;
+int g_wpa_new_password_len;
+char *g_wpa_ttls_phase2_type;
+char *g_wpa_phase1_options;
+u8 *g_wpa_pac_file;
+int g_wpa_pac_file_len;
+bool g_wpa_suiteb_certification;
 
 void eap_peer_config_deinit(struct eap_sm *sm);
 void eap_peer_blob_deinit(struct eap_sm *sm);
diff --git a/components/wpa_supplicant/src/eap_peer/eap.h b/components/wpa_supplicant/src/eap_peer/eap.h
index 3db3c9907a..9ef8224fab 100644
--- a/components/wpa_supplicant/src/eap_peer/eap.h
+++ b/components/wpa_supplicant/src/eap_peer/eap.h
@@ -19,33 +19,33 @@ struct eap_method_type {
 	EapType method;
 };
 
-u8 *g_wpa_anonymous_identity;
-int g_wpa_anonymous_identity_len;
-u8 *g_wpa_username;
-int g_wpa_username_len;
-const u8 *g_wpa_client_cert;
-int g_wpa_client_cert_len;
-const u8 *g_wpa_private_key;
-int g_wpa_private_key_len;
-const u8 *g_wpa_private_key_passwd;
-int g_wpa_private_key_passwd_len;
+extern u8 *g_wpa_anonymous_identity;
+extern int g_wpa_anonymous_identity_len;
+extern u8 *g_wpa_username;
+extern int g_wpa_username_len;
+extern const u8 *g_wpa_client_cert;
+extern int g_wpa_client_cert_len;
+extern const u8 *g_wpa_private_key;
+extern int g_wpa_private_key_len;
+extern const u8 *g_wpa_private_key_passwd;
+extern int g_wpa_private_key_passwd_len;
 
-const u8 *g_wpa_ca_cert;
-int g_wpa_ca_cert_len;
+extern const u8 *g_wpa_ca_cert;
+extern int g_wpa_ca_cert_len;
 
-u8 *g_wpa_password;
-int g_wpa_password_len;
+extern u8 *g_wpa_password;
+extern int g_wpa_password_len;
 
-u8 *g_wpa_new_password;
-int g_wpa_new_password_len;
+extern u8 *g_wpa_new_password;
+extern int g_wpa_new_password_len;
 
-char *g_wpa_ttls_phase2_type;
-char *g_wpa_phase1_options;
+extern char *g_wpa_ttls_phase2_type;
+extern char *g_wpa_phase1_options;
 
-u8 *g_wpa_pac_file;
-int g_wpa_pac_file_len;
+extern u8 *g_wpa_pac_file;
+extern int g_wpa_pac_file_len;
 
-bool g_wpa_suiteb_certification;
+extern bool g_wpa_suiteb_certification;
 
 const u8 * eap_get_eapKeyData(struct eap_sm *sm, size_t *len);
 void eap_deinit_prev_method(struct eap_sm *sm, const char *txt);
diff --git a/examples/bluetooth/bluedroid/classic_bt/hfp_ag/main/bt_app_hf.h b/examples/bluetooth/bluedroid/classic_bt/hfp_ag/main/bt_app_hf.h
index f60c7a8da4..a58648aad5 100644
--- a/examples/bluetooth/bluedroid/classic_bt/hfp_ag/main/bt_app_hf.h
+++ b/examples/bluetooth/bluedroid/classic_bt/hfp_ag/main/bt_app_hf.h
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Unlicense OR CC0-1.0
  */
@@ -11,7 +11,7 @@
 #include "esp_hf_ag_api.h"
 #include "esp_bt_defs.h"
 
-esp_bd_addr_t hf_peer_addr; // Declaration of peer device bdaddr
+extern esp_bd_addr_t hf_peer_addr; // Declaration of peer device bdaddr
 
 #define BT_HF_TAG               "BT_APP_HF"
 
diff --git a/examples/bluetooth/esp_ble_mesh/ble_mesh_coex_test/components/case/sync.h b/examples/bluetooth/esp_ble_mesh/ble_mesh_coex_test/components/case/sync.h
index 85efed4a61..a8b9265d65 100644
--- a/examples/bluetooth/esp_ble_mesh/ble_mesh_coex_test/components/case/sync.h
+++ b/examples/bluetooth/esp_ble_mesh/ble_mesh_coex_test/components/case/sync.h
@@ -1,7 +1,7 @@
 /*
  * ESP BLE Mesh Example
  *
- * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Unlicense OR CC0-1.0
  */
@@ -86,7 +86,7 @@ typedef struct {
     uint8_t  case_id;
     const uint16_t excpet_param_bit;
 } auto_tc;
-auto_tc auto_tb[6];
+extern auto_tc auto_tb[6];
 
 
 typedef enum {
@@ -113,7 +113,7 @@ struct sync_t {
     esp_timer_handle_t sync_timer;
     sync_recv     cmd_recv;
 };
-struct sync_t sync_obj;
+extern struct sync_t sync_obj;
 
 extern SemaphoreHandle_t client_mutex;
 void sync_init(void);
diff --git a/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_adapter.c b/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_adapter.c
index 469bd06fae..064abfd860 100644
--- a/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_adapter.c
+++ b/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_adapter.c
@@ -7,6 +7,9 @@
 #include "esp_ble_mesh_networking_api.h"
 #include "ble_mesh_adapter.h"
 
+ble_mesh_performance_statistics_t test_perf_statistics;
+ble_mesh_node_statistics_t ble_mesh_node_statistics;
+
 esp_ble_mesh_model_t *ble_mesh_get_model(uint16_t model_id)
 {
     esp_ble_mesh_model_t *model = NULL;
diff --git a/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_adapter.h b/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_adapter.h
index 3ed7655b3a..7ac523d59e 100644
--- a/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_adapter.h
+++ b/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_adapter.h
@@ -53,7 +53,7 @@ typedef struct {
     uint16_t *package_index;
     uint8_t  ttl;
 } ble_mesh_performance_statistics_t;
-ble_mesh_performance_statistics_t test_perf_statistics;
+extern ble_mesh_performance_statistics_t test_perf_statistics;
 
 typedef struct {
     uint32_t statistics;
@@ -61,7 +61,7 @@ typedef struct {
     uint16_t *package_index;
     uint32_t total_package_num;
 } ble_mesh_node_statistics_t;
-ble_mesh_node_statistics_t ble_mesh_node_statistics;
+extern ble_mesh_node_statistics_t ble_mesh_node_statistics;
 
 extern SemaphoreHandle_t ble_mesh_node_sema;
 
diff --git a/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_cfg_srv_model.c b/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_cfg_srv_model.c
index 4cd84fce16..fd5f2099fb 100644
--- a/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_cfg_srv_model.c
+++ b/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_cfg_srv_model.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2017-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2017-2022 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -8,6 +8,7 @@
 #include "esp_ble_mesh_generic_model_api.h"
 uint8_t dev_uuid[16] = {0xdd, 0xdd};
 
+ble_mesh_node_config_params ble_mesh_node_prestore_params[NODE_MAX_GROUP_CONFIG];
 
 esp_ble_mesh_prov_t prov = {
 #if CONFIG_BLE_MESH_NODE
@@ -66,6 +67,8 @@ esp_ble_mesh_comp_t config_server_comp = {
 };
 
 // config client model
+esp_ble_mesh_client_t cfg_cli;
+
 esp_ble_mesh_model_t config_client_models[] = {
     ESP_BLE_MESH_MODEL_CFG_SRV(&cfg_srv),
     ESP_BLE_MESH_MODEL_CFG_CLI(&cfg_cli),
diff --git a/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_cfg_srv_model.h b/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_cfg_srv_model.h
index ae087c818b..7fbb7ee47c 100644
--- a/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_cfg_srv_model.h
+++ b/examples/bluetooth/esp_ble_mesh/ble_mesh_console/main/ble_mesh_cfg_srv_model.h
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2017-2021 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2017-2022 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -23,7 +23,7 @@ typedef struct {
     uint16_t net_idx;
     uint16_t unicast_addr;
 } ble_mesh_node_config_params;
-ble_mesh_node_config_params ble_mesh_node_prestore_params[NODE_MAX_GROUP_CONFIG];
+extern ble_mesh_node_config_params ble_mesh_node_prestore_params[NODE_MAX_GROUP_CONFIG];
 
 extern esp_ble_mesh_prov_t prov;
 
@@ -39,7 +39,7 @@ extern esp_ble_mesh_elem_t config_server_elements[];
 extern esp_ble_mesh_comp_t config_server_comp;
 
 // config client model
-esp_ble_mesh_client_t cfg_cli;
+extern esp_ble_mesh_client_t cfg_cli;
 extern esp_ble_mesh_model_t config_client_models[];
 
 extern esp_ble_mesh_elem_t config_client_elements[];
diff --git a/examples/system/ota/advanced_https_ota/main/ble_helper/bluedroid_gatts.c b/examples/system/ota/advanced_https_ota/main/ble_helper/bluedroid_gatts.c
index c8fd0e5917..c09955f1ce 100644
--- a/examples/system/ota/advanced_https_ota/main/ble_helper/bluedroid_gatts.c
+++ b/examples/system/ota/advanced_https_ota/main/ble_helper/bluedroid_gatts.c
@@ -1,16 +1,8 @@
-// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #include "bluedroid_gatts.h"
 #include "esp_log.h"
@@ -19,6 +11,7 @@
 #if CONFIG_BT_BLE_ENABLED
 
 static const char *TAG = "bluedroid_gatts";
+static prepare_type_env_t a_prepare_write_env;
 
 uint8_t adv_service_uuid128[32] = {
     /* LSB <--------------------------------------------------------------------------------> MSB */
diff --git a/examples/system/ota/advanced_https_ota/main/ble_helper/include/bluedroid_gatts.h b/examples/system/ota/advanced_https_ota/main/ble_helper/include/bluedroid_gatts.h
index 13aee0cc01..b685a3d031 100644
--- a/examples/system/ota/advanced_https_ota/main/ble_helper/include/bluedroid_gatts.h
+++ b/examples/system/ota/advanced_https_ota/main/ble_helper/include/bluedroid_gatts.h
@@ -1,16 +1,8 @@
-// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef H_BLUEDROID_GATTS_
 #define H_BLUEDROID_GATTS_
@@ -68,8 +60,6 @@ typedef struct {
     int                     prepare_len;
 } prepare_type_env_t;
 
-prepare_type_env_t a_prepare_write_env;
-
 void gatts_profile_a_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if, esp_ble_gatts_cb_param_t *param);
 
 void example_write_event_env(esp_gatt_if_t gatts_if, prepare_type_env_t *prepare_write_env, esp_ble_gatts_cb_param_t *param);
diff --git a/examples/system/ota/advanced_https_ota/main/ble_helper/include/nimble_gatts.h b/examples/system/ota/advanced_https_ota/main/ble_helper/include/nimble_gatts.h
index 0133136df3..8c52e7e81a 100644
--- a/examples/system/ota/advanced_https_ota/main/ble_helper/include/nimble_gatts.h
+++ b/examples/system/ota/advanced_https_ota/main/ble_helper/include/nimble_gatts.h
@@ -1,16 +1,8 @@
-// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #ifndef H_NIMBLE_GATTS_
 #define H_NIMBLE_GATTS_
@@ -37,7 +29,6 @@ struct ble_hs_cfg;
 struct ble_gatt_register_ctxt;
 
 int bleprph_gap_event(struct ble_gap_event *event, void *arg);
-uint8_t own_addr_type;
 
 /** GATT server. */
 #define GATT_SVR_SVC_ALERT_UUID               0x1811
diff --git a/examples/system/ota/advanced_https_ota/main/ble_helper/nimble_gatts.c b/examples/system/ota/advanced_https_ota/main/ble_helper/nimble_gatts.c
index 9037549a34..9045cb4f18 100644
--- a/examples/system/ota/advanced_https_ota/main/ble_helper/nimble_gatts.c
+++ b/examples/system/ota/advanced_https_ota/main/ble_helper/nimble_gatts.c
@@ -1,16 +1,8 @@
-// Copyright 2021 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #include "sdkconfig.h"
 
@@ -21,6 +13,7 @@
 #include "services/gatt/ble_svc_gatt.h"
 
 static const char *TAG = "nimble_gatts";
+static uint8_t own_addr_type;
 
 static const ble_uuid128_t gatt_svr_svc_sec_test_uuid =
     BLE_UUID128_INIT(0x2d, 0x71, 0xa2, 0x59, 0xb4, 0x58, 0xc8, 0x12,
diff --git a/examples/wifi/ftm/main/ftm_main.c b/examples/wifi/ftm/main/ftm_main.c
index 2d3eaf23ba..0fa5546ae2 100644
--- a/examples/wifi/ftm/main/ftm_main.c
+++ b/examples/wifi/ftm/main/ftm_main.c
@@ -66,19 +66,19 @@ static int s_retry_num = 0;
 static const char *TAG_STA = "ftm_station";
 static const char *TAG_AP = "ftm_ap";
 
-static EventGroupHandle_t wifi_event_group;
-const int CONNECTED_BIT = BIT0;
-const int DISCONNECTED_BIT = BIT1;
+static EventGroupHandle_t s_wifi_event_group;
+static const int CONNECTED_BIT = BIT0;
+static const int DISCONNECTED_BIT = BIT1;
 
-static EventGroupHandle_t ftm_event_group;
-const int FTM_REPORT_BIT = BIT0;
-const int FTM_FAILURE_BIT = BIT1;
-wifi_ftm_report_entry_t *g_ftm_report;
-uint8_t g_ftm_report_num_entries;
-static uint32_t g_rtt_est, g_dist_est;
-bool g_ap_started;
-uint8_t g_ap_channel;
-uint8_t g_ap_bssid[ETH_ALEN];
+static EventGroupHandle_t s_ftm_event_group;
+static const int FTM_REPORT_BIT = BIT0;
+static const int FTM_FAILURE_BIT = BIT1;
+static wifi_ftm_report_entry_t *s_ftm_report;
+static uint8_t s_ftm_report_num_entries;
+static uint32_t s_rtt_est, s_dist_est;
+static bool s_ap_started;
+static uint8_t s_ap_channel;
+static uint8_t s_ap_bssid[ETH_ALEN];
 
 const int g_report_lvl =
 #ifdef CONFIG_ESP_FTM_REPORT_SHOW_DIAG
@@ -107,10 +107,10 @@ static void event_handler(void *arg, esp_event_base_t event_base,
         ESP_LOGI(TAG_STA, "Connected to %s (BSSID: "MACSTR", Channel: %d)", event->ssid,
                  MAC2STR(event->bssid), event->channel);
 
-        memcpy(g_ap_bssid, event->bssid, ETH_ALEN);
-        g_ap_channel = event->channel;
-        xEventGroupClearBits(wifi_event_group, DISCONNECTED_BIT);
-        xEventGroupSetBits(wifi_event_group, CONNECTED_BIT);
+        memcpy(s_ap_bssid, event->bssid, ETH_ALEN);
+        s_ap_channel = event->channel;
+        xEventGroupClearBits(s_wifi_event_group, DISCONNECTED_BIT);
+        xEventGroupSetBits(s_wifi_event_group, CONNECTED_BIT);
     } else if (event_id == WIFI_EVENT_STA_DISCONNECTED) {
         if (s_reconnect && ++s_retry_num < MAX_CONNECT_RETRY_ATTEMPTS) {
             ESP_LOGI(TAG_STA, "sta disconnect, retry attempt %d...", s_retry_num);
@@ -118,26 +118,26 @@ static void event_handler(void *arg, esp_event_base_t event_base,
         } else {
             ESP_LOGI(TAG_STA, "sta disconnected");
         }
-        xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
-        xEventGroupSetBits(wifi_event_group, DISCONNECTED_BIT);
+        xEventGroupClearBits(s_wifi_event_group, CONNECTED_BIT);
+        xEventGroupSetBits(s_wifi_event_group, DISCONNECTED_BIT);
     } else if (event_id == WIFI_EVENT_FTM_REPORT) {
         wifi_event_ftm_report_t *event = (wifi_event_ftm_report_t *) event_data;
 
         if (event->status == FTM_STATUS_SUCCESS) {
-            g_rtt_est = event->rtt_est;
-            g_dist_est = event->dist_est;
-            g_ftm_report = event->ftm_report_data;
-            g_ftm_report_num_entries = event->ftm_report_num_entries;
-            xEventGroupSetBits(ftm_event_group, FTM_REPORT_BIT);
+            s_rtt_est = event->rtt_est;
+            s_dist_est = event->dist_est;
+            s_ftm_report = event->ftm_report_data;
+            s_ftm_report_num_entries = event->ftm_report_num_entries;
+            xEventGroupSetBits(s_ftm_event_group, FTM_REPORT_BIT);
         } else {
             ESP_LOGI(TAG_STA, "FTM procedure with Peer("MACSTR") failed! (Status - %d)",
                      MAC2STR(event->peer_mac), event->status);
-            xEventGroupSetBits(ftm_event_group, FTM_FAILURE_BIT);
+            xEventGroupSetBits(s_ftm_event_group, FTM_FAILURE_BIT);
         }
     } else if (event_id == WIFI_EVENT_AP_START) {
-        g_ap_started = true;
+        s_ap_started = true;
     } else if (event_id == WIFI_EVENT_AP_STOP) {
-        g_ap_started = false;
+        s_ap_started = false;
     }
 }
 
@@ -160,22 +160,22 @@ static void ftm_process_report(void)
                  g_report_lvl & BIT3 ? "  RSSI  |":"");
     ESP_LOGI(TAG_STA, "FTM Report:");
     ESP_LOGI(TAG_STA, "|%s", log);
-    for (i = 0; i < g_ftm_report_num_entries; i++) {
+    for (i = 0; i < s_ftm_report_num_entries; i++) {
         char *log_ptr = log;
 
         bzero(log, 200);
         if (g_report_lvl & BIT0) {
-            log_ptr += sprintf(log_ptr, "%6d|", g_ftm_report[i].dlog_token);
+            log_ptr += sprintf(log_ptr, "%6d|", s_ftm_report[i].dlog_token);
         }
         if (g_report_lvl & BIT1) {
-            log_ptr += sprintf(log_ptr, "%7u  |", g_ftm_report[i].rtt);
+            log_ptr += sprintf(log_ptr, "%7u  |", s_ftm_report[i].rtt);
         }
         if (g_report_lvl & BIT2) {
-            log_ptr += sprintf(log_ptr, "%14llu  |%14llu  |%14llu  |%14llu  |", g_ftm_report[i].t1,
-                                        g_ftm_report[i].t2, g_ftm_report[i].t3, g_ftm_report[i].t4);
+            log_ptr += sprintf(log_ptr, "%14llu  |%14llu  |%14llu  |%14llu  |", s_ftm_report[i].t1,
+                                        s_ftm_report[i].t2, s_ftm_report[i].t3, s_ftm_report[i].t4);
         }
         if (g_report_lvl & BIT3) {
-            log_ptr += sprintf(log_ptr, "%6d  |", g_ftm_report[i].rssi);
+            log_ptr += sprintf(log_ptr, "%6d  |", s_ftm_report[i].rssi);
         }
         ESP_LOGI(TAG_STA, "|%s", log);
     }
@@ -192,8 +192,8 @@ void initialise_wifi(void)
     }
 
     ESP_ERROR_CHECK(esp_netif_init());
-    wifi_event_group = xEventGroupCreate();
-    ftm_event_group = xEventGroupCreate();
+    s_wifi_event_group = xEventGroupCreate();
+    s_ftm_event_group = xEventGroupCreate();
     ESP_ERROR_CHECK( esp_event_loop_create_default() );
     wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
     ESP_ERROR_CHECK(esp_wifi_init(&cfg));
@@ -213,7 +213,7 @@ void initialise_wifi(void)
 
 static bool wifi_cmd_sta_join(const char *ssid, const char *pass)
 {
-    int bits = xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, 0, 1, 0);
+    int bits = xEventGroupWaitBits(s_wifi_event_group, CONNECTED_BIT, 0, 1, 0);
 
     wifi_config_t wifi_config = { 0 };
 
@@ -224,9 +224,9 @@ static bool wifi_cmd_sta_join(const char *ssid, const char *pass)
 
     if (bits & CONNECTED_BIT) {
         s_reconnect = false;
-        xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
+        xEventGroupClearBits(s_wifi_event_group, CONNECTED_BIT);
         ESP_ERROR_CHECK( esp_wifi_disconnect() );
-        xEventGroupWaitBits(wifi_event_group, DISCONNECTED_BIT, 0, 1, portTICK_RATE_MS);
+        xEventGroupWaitBits(s_wifi_event_group, DISCONNECTED_BIT, 0, 1, portTICK_RATE_MS);
     }
 
     s_reconnect = true;
@@ -235,7 +235,7 @@ static bool wifi_cmd_sta_join(const char *ssid, const char *pass)
     ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
     ESP_ERROR_CHECK( esp_wifi_connect() );
 
-    xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, 0, 1, 5000 / portTICK_RATE_MS);
+    xEventGroupWaitBits(s_wifi_event_group, CONNECTED_BIT, 0, 1, 5000 / portTICK_RATE_MS);
 
     return true;
 }
@@ -362,7 +362,7 @@ static int wifi_cmd_query(int argc, char **argv)
         esp_wifi_get_config(WIFI_IF_AP, &cfg);
         ESP_LOGI(TAG_AP, "AP mode, %s %s", cfg.ap.ssid, cfg.ap.password);
     } else if (WIFI_MODE_STA == mode) {
-        int bits = xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, 0, 1, 0);
+        int bits = xEventGroupWaitBits(s_wifi_event_group, CONNECTED_BIT, 0, 1, 0);
         if (bits & CONNECTED_BIT) {
             esp_wifi_get_config(WIFI_IF_STA, &cfg);
             ESP_LOGI(TAG_STA, "sta mode, connected %s", cfg.ap.ssid);
@@ -436,10 +436,10 @@ static int wifi_cmd_ftm(int argc, char **argv)
     if (ftm_args.responder->count != 0)
         goto ftm_responder;
 
-    bits = xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, 0, 1, 0);
+    bits = xEventGroupWaitBits(s_wifi_event_group, CONNECTED_BIT, 0, 1, 0);
     if (bits & CONNECTED_BIT && !ftm_args.ssid->count) {
-        memcpy(ftmi_cfg.resp_mac, g_ap_bssid, ETH_ALEN);
-        ftmi_cfg.channel = g_ap_channel;
+        memcpy(ftmi_cfg.resp_mac, s_ap_bssid, ETH_ALEN);
+        ftmi_cfg.channel = s_ap_channel;
     } else if (ftm_args.ssid->count == 1) {
         ap_record = find_ftm_responder_ap(ftm_args.ssid->sval[0]);
         if (ap_record) {
@@ -481,16 +481,16 @@ static int wifi_cmd_ftm(int argc, char **argv)
         return 0;
     }
 
-    bits = xEventGroupWaitBits(ftm_event_group, FTM_REPORT_BIT | FTM_FAILURE_BIT,
+    bits = xEventGroupWaitBits(s_ftm_event_group, FTM_REPORT_BIT | FTM_FAILURE_BIT,
                                            pdTRUE, pdFALSE, portMAX_DELAY);
     /* Processing data from FTM session */
     if (bits & FTM_REPORT_BIT) {
         ftm_process_report();
-        free(g_ftm_report);
-        g_ftm_report = NULL;
-        g_ftm_report_num_entries = 0;
+        free(s_ftm_report);
+        s_ftm_report = NULL;
+        s_ftm_report_num_entries = 0;
         ESP_LOGI(TAG_STA, "Estimated RTT - %d nSec, Estimated Distance - %d.%02d meters",
-                          g_rtt_est, g_dist_est / 100, g_dist_est % 100);
+                          s_rtt_est, s_dist_est / 100, s_dist_est % 100);
     } else {
         /* Failure case */
     }
@@ -505,7 +505,7 @@ ftm_responder:
     }
 
     if (ftm_args.enable->count != 0) {
-        if (!g_ap_started) {
+        if (!s_ap_started) {
             ESP_LOGE(TAG_AP, "Start the SoftAP first with 'ap' command");
             return 0;
         }
@@ -517,7 +517,7 @@ ftm_responder:
     }
 
     if (ftm_args.disable->count != 0) {
-        if (!g_ap_started) {
+        if (!s_ap_started) {
             ESP_LOGE(TAG_AP, "Start the SoftAP first with 'ap' command");
             return 0;
         }
diff --git a/tools/ci/check_copyright_ignore.txt b/tools/ci/check_copyright_ignore.txt
index 52fd47aa4a..d79d5228a4 100644
--- a/tools/ci/check_copyright_ignore.txt
+++ b/tools/ci/check_copyright_ignore.txt
@@ -859,7 +859,6 @@ components/fatfs/src/ffconf.h
 components/fatfs/src/ffsystem.c
 components/fatfs/src/ffunicode.c
 components/fatfs/test/test_fatfs_common.c
-components/fatfs/test/test_fatfs_common.h
 components/fatfs/test/test_fatfs_rawflash.c
 components/fatfs/test/test_fatfs_spiflash.c
 components/fatfs/test_fatfs_host/main.cpp
@@ -1509,7 +1508,6 @@ components/pthread/test/test_pthread.c
 components/pthread/test/test_pthread_cond_var.c
 components/pthread/test/test_pthread_cxx.cpp
 components/pthread/test/test_pthread_local_storage.c
-components/riscv/include/esp_private/panic_reason.h
 components/riscv/include/riscv/csr.h
 components/riscv/include/riscv/encoding.h
 components/riscv/include/riscv/instruction_decode.h
@@ -2111,7 +2109,6 @@ components/wifi_provisioning/src/wifi_provisioning_priv.h
 components/wifi_provisioning/src/wifi_scan.c
 components/wpa_supplicant/esp_supplicant/include/esp_dpp.h
 components/wpa_supplicant/esp_supplicant/include/esp_rrm.h
-components/wpa_supplicant/esp_supplicant/include/esp_wpa.h
 components/wpa_supplicant/esp_supplicant/include/esp_wps.h
 components/wpa_supplicant/esp_supplicant/src/esp_dpp_i.h
 components/wpa_supplicant/esp_supplicant/src/esp_scan_i.h
@@ -2789,11 +2786,7 @@ examples/system/light_sleep/main/light_sleep_example_main.c
 examples/system/ota/advanced_https_ota/example_test.py
 examples/system/ota/advanced_https_ota/main/advanced_https_ota_example.c
 examples/system/ota/advanced_https_ota/main/ble_helper/ble_api.c
-examples/system/ota/advanced_https_ota/main/ble_helper/bluedroid_gatts.c
 examples/system/ota/advanced_https_ota/main/ble_helper/include/ble_api.h
-examples/system/ota/advanced_https_ota/main/ble_helper/include/bluedroid_gatts.h
-examples/system/ota/advanced_https_ota/main/ble_helper/include/nimble_gatts.h
-examples/system/ota/advanced_https_ota/main/ble_helper/nimble_gatts.c
 examples/system/ota/native_ota_example/example_test.py
 examples/system/ota/native_ota_example/main/native_ota_example.c
 examples/system/ota/otatool/example_test.py