[TEMP] only define ARDUINO_ARCH_SAMD if not defined

sandeepmistry · facchinm · commit 4ac6becde944 · 2018-08-29T16:31:06.000+02:00
diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h
@@ -125,7 +125,9 @@ void loop( void ) ;
 #endif
 
 // Allows publishing the Beta core under samd-beta / arduino organization
+#ifndef ARDUINO_ARCH_SAMD
 #define ARDUINO_ARCH_SAMD
+#endif
 
 // USB Device
 #include "USB/USBDesc.h"
