drivers/xen/xenbus/Makefile - kernel/windcharger - Git at Google

 obj-y	+= xenbus.o

 xenbus-objs =
 xenbus-objs += xenbus_client.o
 xenbus-objs += xenbus_comms.o
 xenbus-objs += xenbus_xs.o
 xenbus-objs += xenbus_probe.o
	obj-y += xenbus.o

	xenbus-objs =
	xenbus-objs += xenbus_client.o
	xenbus-objs += xenbus_comms.o
	xenbus-objs += xenbus_xs.o
	xenbus-objs += xenbus_probe.o