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7c4318513 Kbuild: Use dtc's -d (dependency) option ... Browse Code »
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This hooks dtc into Kbuild's dependency system.

Thus, for example, "make dtbs" will rebuild tegra-harmony.dtb if only
tegra20.dtsi has changed yet tegra-harmony.dts has not. The previous
lack of this feature recently caused me to have very confusing "git
bisect" results.

For ARM, it's obvious what to add to $(targets). I'm not familiar enough
with other architectures to know what to add there. Powerpc appears to
already add various .dtb files into $(targets), but the other archs may
need something added to $(targets) to work.

Signed-off-by: Stephen Warren
Acked-by: Shawn Guo
[mmarek: Dropped arch/c6x part to avoid merging commits from the middle
of the merge window]
Signed-off-by: Michal Marek

Stephen Warren
2012-01-15 07:04:35 +0800

Makefile 279 Bytes

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

clean-files := *.dtb.S

#DTC_FLAGS ?= -p 1024

$(obj)/%.dtb: $(src)/dts/%.dts FORCE
	$(call if_changed_dep,dtc)