make code execution conditional from include esp_bt.h.h

Author: Jason2866

cores/esp32/esp32-hal-bt.c

@@ -17,6 +17,9 @@
 #if SOC_BT_SUPPORTED
 #ifdef CONFIG_BT_BLUEDROID_ENABLED
 
+#if __has_include("esp_bt.h")
+#include "esp_bt.h"
+
 #if CONFIG_IDF_TARGET_ESP32
 bool btInUse() {
   return true;
@@ -28,8 +31,6 @@ __attribute__((weak)) bool btInUse() {
 }
 #endif
 
-#include "esp_bt.h"
-
 #ifdef CONFIG_BTDM_CONTROLLER_MODE_BTDM
 #define BT_MODE ESP_BT_MODE_BTDM
 #elif defined(CONFIG_BTDM_CONTROLLER_MODE_BR_EDR_ONLY)
@@ -56,7 +57,7 @@ bool btStartMode(bt_mode mode) {
     case BT_MODE_BTDM:       esp_bt_mode = ESP_BT_MODE_BTDM; break;
     default:                 esp_bt_mode = BT_MODE; break;
   }
-  // esp_bt_controller_enable(MODE) This mode must be equal as the mode in “cfg” of esp_bt_controller_init().
+  // esp_bt_controller_enable(MODE) This mode must be equal as the mode in "cfg" of esp_bt_controller_init().
   cfg.mode = esp_bt_mode;
   if (cfg.mode == ESP_BT_MODE_CLASSIC_BT) {
     esp_bt_controller_mem_release(ESP_BT_MODE_BLE);
@@ -116,6 +117,7 @@ bool btStop() {
   return false;
 }
 
+#endif // __has_include("esp_bt.h")
 #else  // CONFIG_BT_ENABLED
 bool btStarted() {
   return false;
@@ -132,3 +134,4 @@ bool btStop() {
 #endif /* CONFIG_BT_ENABLED */
 
 #endif /* SOC_BT_SUPPORTED */
+