ULIBS += -lm
endif
-ifdef LCD_BACKLIGHT_ENABLE
+ifeq ($(strip $(LCD_ENABLE)), yes)
SRC += $(VISUALIZER_DIR)/lcd_backlight.c
OPT_DEFS += -DLCD_BACKLIGHT_ENABLE
endif
-ifdef LED_ENABLE
+ifeq ($(strip $(LED_ENABLE)), yes)
SRC += $(VISUALIZER_DIR)/led_test.c
OPT_DEFS += -DLED_ENABLE
endif