-CDEFS = -DF_CPU=$(F_CPU)UL -DF_CLOCK=$(F_CLOCK)UL -DBOARD=BOARD_$(BOARD)\r
-CDEFS += -DUSE_NONSTANDARD_DESCRIPTOR_NAMES\r
-CDEFS += -DNUM_BLOCKS=100 -DBLOCK_SIZE=8 -DNUM_HANDLES=20\r
+CDEFS = -DF_CPU=$(F_CPU)UL -DF_CLOCK=$(F_CLOCK)UL -DBOARD=BOARD_$(BOARD) $(patsubst %,-D%,$(LUFA_OPTS))\r