+LUFA_OPTS += -D NO_INTERNAL_SERIAL
+LUFA_OPTS += -D NO_DEVICE_REMOTE_WAKEUP
+LUFA_OPTS += -D NO_DEVICE_SELF_POWER
+
+LUFA_OPTS += -D AUX_LINE_PORT=PORTB
+LUFA_OPTS += -D AUX_LINE_PIN=PINB
+LUFA_OPTS += -D AUX_LINE_DDR=DDRB
+LUFA_OPTS += -D AUX_LINE_MASK="(1 << 4)"
+LUFA_OPTS += -D ENABLE_ISP_PROTOCOL
+LUFA_OPTS += -D ENABLE_XPROG_PROTOCOL
+LUFA_OPTS += -D VTARGET_ADC_CHANNEL=2
+LUFA_OPTS += -D VTARGET_REF_VOLTS=5
+LUFA_OPTS += -D VTARGET_SCALE_FACTOR=1
+#LUFA_OPTS += -D VTARGET_USE_INTERNAL_REF
+#LUFA_OPTS += -D NO_VTARGET_DETECT
+#LUFA_OPTS += -D LIBUSB_DRIVER_COMPAT
+#LUFA_OPTS += -D XCK_RESCUE_CLOCK_ENABLE
+#LUFA_OPTS += -D INVERTED_ISP_MISO
+
+
+# Create the LUFA source path variables by including the LUFA root makefile
+include $(LUFA_PATH)/LUFA/makefile