DTC := dtc
DTCFLAGS += -I dts
DTCFLAGS += -O dtb
CPP := cpp
CPPFLAGS += -nostdinc
CPPFLAGS += -I include
CPPFLAGS += -undef
CPPFLAGS += -x assembler-with-cpp

all: am335x-boneblack-uboot.dtb
# all: am335x-boneblack-uboot-univ.dtb

# odering is important:
%.dts.pre: %.dts
	$(CPP) $(CPPFLAGS) $< $@
%.dts.pre: src/%.dts
	$(CPP) $(CPPFLAGS) $< $@

%.dtb: %.dts.pre
	$(DTC) $(DTCFLAGS) -o $@ $<
# %.dtb: %.dts
# 	$(DTC) $(DTCFLAGS) -o $@ $<