Kbuild: Use dtc's -d (dependency) option
authorStephen Warren <swarren@nvidia.com>
Mon, 9 Jan 2012 18:38:15 +0000 (11:38 -0700)
committerMichal Marek <mmarek@suse.cz>
Sat, 14 Jan 2012 23:04:35 +0000 (00:04 +0100)
commit7c43185138cf523b0810ffd2c9e18e2ecb356730
tree24deed8741857d00f5575bf8febf0c6f66357af4
parent136ec2049fea65aed0446d04ab7cfff2ae3070f1
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>
[mmarek: Dropped arch/c6x part to avoid merging commits from the middle
of the merge window]
Signed-off-by: Michal Marek <mmarek@suse.cz>
arch/arm/boot/Makefile
arch/microblaze/boot/Makefile
arch/openrisc/boot/Makefile
arch/powerpc/boot/Makefile
scripts/Makefile.lib