arch/nds32/boot/dts/Makefile - third_party/linux - Git at Google

 ifneq '$(CONFIG_NDS32_BUILTIN_DTB)' '""'
 BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_NDS32_BUILTIN_DTB)).dtb.o
 else
 BUILTIN_DTB :=
 endif
 obj-$(CONFIG_OF) += $(BUILTIN_DTB)

 clean-files := *.dtb *.dtb.S
	ifneq '$(CONFIG_NDS32_BUILTIN_DTB)' '""'
	BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_NDS32_BUILTIN_DTB)).dtb.o
	else
	BUILTIN_DTB :=
	endif
	obj-$(CONFIG_OF) += $(BUILTIN_DTB)

	clean-files := .dtb .dtb.S