Added guard to only compile Radio class when using RadioShield

src/RadioLib.h

@@ -77,6 +77,9 @@
 #include "protocols/MQTT/MQTT.h"
 #endif
 
+// only create Radio class when using RadioShield
+#ifdef RADIOLIB_RADIOSHIELD
+
 // RadioShield pin definitions
 #define RADIOSHIELD_CS_A   10
 #define RADIOSHIELD_RX_A   9
@@ -115,5 +118,6 @@ class Radio {
 };
 
 Radio RadioShield;
+#endif
 
 #endif

src/TypeDef.h

@@ -53,6 +53,11 @@
  */
 //#define RADIOLIB_GODMODE
 
+/*
+ * Uncomment to enable pre-defined modules when using RadioShield.
+ */
+//#define RADIOLIB_RADIOSHIELD
+
 /*
  * The following platforms do not support SoftwareSerial library.
  */