Makefile

power_supply-objs := power_supply_core.o

ifeq ($(CONFIG_SYSFS),y)
power_supply-objs += power_supply_sysfs.o
endif

ifeq ($(CONFIG_LEDS_TRIGGERS),y)
power_supply-objs += power_supply_leds.o
endif

ifeq ($(CONFIG_POWER_SUPPLY_DEBUG),y)
EXTRA_CFLAGS += -DDEBUG
endif

obj-$(CONFIG_POWER_SUPPLY)	+= power_supply.o