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authorStephen Warren <swarren@nvidia.com>2012-01-09 11:00:32 -0700
committerMark Salter <msalter@redhat.com>2012-02-14 21:14:44 -0500
commit62e37ca78b1a4ca2eb77875bfd7ac63a7e068c67 (patch)
tree19bb12d1f88431eb66b583900ac104cfbc278fcc
parentdcd6c92267155e70a94b3927bce681ce74b80d1f (diff)
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Kbuild: Use dtc's -d (dependency) option
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 <swarren@nvidia.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Mark Salter <msalter@redhat.com>
-rw-r--r--arch/c6x/boot/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/c6x/boot/Makefile b/arch/c6x/boot/Makefile
index ecca820e604..6891257d514 100644
--- a/arch/c6x/boot/Makefile
+++ b/arch/c6x/boot/Makefile
@@ -13,7 +13,7 @@ obj-y += linked_dtb.o
endif
$(obj)/%.dtb: $(src)/dts/%.dts FORCE
- $(call cmd,dtc)
+ $(call if_changed_dep,dtc)
quiet_cmd_cp = CP $< $@$2
cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)