kern/drivers/net/Kbuild - upstream - Git at Google

 # Old stack drivers
 obj-$(CONFIG_E1000)			+= e1000.o
 obj-$(CONFIG_NE2K)			+= ne2k.o
 obj-$(CONFIG_RL8168)		+= rl8168.o

 # plan9 style drivers
 obj-y						+= ether8139.o
 obj-y						+= ether8169.o
 obj-y						+= ethermii.o
 obj-y						+= etherigbe.o
	# Old stack drivers
	obj-$(CONFIG_E1000) += e1000.o
	obj-$(CONFIG_NE2K) += ne2k.o
	obj-$(CONFIG_RL8168) += rl8168.o

	# plan9 style drivers
	obj-y += ether8139.o
	obj-y += ether8169.o
	obj-y += ethermii.o
	obj-y += etherigbe.o