-CDEFS = -DF_CPU=$(F_CPU)UL -DF_CLOCK=$(F_CLOCK)UL -DBOARD=BOARD_$(BOARD) $(LUFA_OPTS)
-CDEFS += -DAUX_LINE_PORT=PORTB
-CDEFS += -DAUX_LINE_PIN=PINB
-CDEFS += -DAUX_LINE_DDR=DDRB
-CDEFS += -DAUX_LINE_MASK="(1 << 4)"
-CDEFS += -DENABLE_ISP_PROTOCOL
-CDEFS += -DENABLE_XPROG_PROTOCOL
-CDEFS += -DVTARGET_ADC_CHANNEL=2
-CDEFS += -DVTARGET_REF_VOLTS=5
-CDEFS += -DVTARGET_SCALE_FACTOR=1
-#CDEFS += -DNO_VTARGET_DETECT
-#CDEFS += -DLIBUSB_DRIVER_COMPAT
+CDEFS = -DF_CPU=$(F_CPU)UL
+CDEFS += -DF_USB=$(F_USB)UL
+CDEFS += -DBOARD=BOARD_$(BOARD) -DARCH=ARCH_$(ARCH)
+CDEFS += $(LUFA_OPTS)