[RFC PATCH 2/3] ARM: use cmd_dtc_cpp for compilation of *.dts-cpp to *.dtb

[Jean-Christophe PLAGNIOL-VILLARD]

On 13:06 Tue 25 Sep     , Stephen Warren wrote:
> From: Stephen Warren <swarren at nvidia.com>
> 
> This allows DT source files to use the C pre-processor. A new file
> extension is introduced for this purpose, since use of the pre-processor
> must be optional; any property or node name that starts with "#" must be
> escaped to prevent the pre-processor attempting to interpret it as a
> directive. For this reason, skeleton.dtsi-cpp is introduced for *.dts-cpp
> to include.
> 
> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> ---
>  arch/arm/boot/Makefile              |    3 +++
>  arch/arm/boot/dts/skeleton.dtsi-cpp |   13 +++++++++++++
>  2 files changed, 16 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/boot/dts/skeleton.dtsi-cpp
> 
> diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
> index 3fdab01..c5d7fca 100644
> --- a/arch/arm/boot/Makefile
> +++ b/arch/arm/boot/Makefile
> @@ -65,6 +65,9 @@ targets += $(dtb-y)
>  $(obj)/%.dtb: $(src)/dts/%.dts FORCE
>  	$(call if_changed_dep,dtc)
>  
> +$(obj)/%.dtb: $(src)/dts/%.dts-cpp FORCE
> +	$(call if_changed_dep,dtc_cpp)
> +
move this to Makefile.build so we wan use it acroos arch

Best Regards,
J.