Add guards to not compile BT code if not enabled

cores/esp32/esp32-hal-bt.c

@@ -14,7 +14,8 @@
 
 #include "esp32-hal-bt.h"
 
-#if CONFIG_BT_ENABLED
+#if defined(CONFIG_BT_ENABLED) && defined(CONFIG_BLUEDROID_ENABLED)
+
 
 #include "bt.h"
 #include "esp_bt_defs.h"

libraries/SimpleBLE/examples/SimpleBleDevice/SimpleBleDevice.ino

@@ -16,6 +16,10 @@
 // Useful if you want to advertise some sort of message
 // Button is attached between GPIO 0 and GND, and the device name changes each time the button is pressed
 
+#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
+#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
+#endif
+
 #include "SimpleBLE.h"
 SimpleBLE ble;
 

libraries/SimpleBLE/src/SimpleBLE.cpp

@@ -12,6 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#if defined(CONFIG_BT_ENABLED) && defined(CONFIG_BLUEDROID_ENABLED)
+
 #include "SimpleBLE.h"
 #include "esp32-hal-log.h"
 
@@ -125,3 +127,5 @@ void SimpleBLE::end()
 {
     _stop_gap();
 }
+
+#endif

libraries/SimpleBLE/src/SimpleBLE.h

@@ -15,6 +15,7 @@
 #ifndef _SIMPLE_BLE_H_
 #define _SIMPLE_BLE_H_
 
+#if defined(CONFIG_BT_ENABLED) && defined(CONFIG_BLUEDROID_ENABLED)
 
 #include <cstdint>
 #include <cstdio>
@@ -58,3 +59,5 @@ class SimpleBLE {
 };
 
 #endif
+
+#endif