[RFC PATCH 1/3] kbuild: introduce cmd_dtc_cpp

[Jean-Christophe PLAGNIOL-VILLARD]

On 13:06 Tue 25 Sep     , Stephen Warren wrote:
> From: Stephen Warren <swarren at nvidia.com>
> 
> cmd_dtc_cpp runs the C pre-processor on the input .dts file before
> passing it to dtc for final compilation. This allows used of #define
> within the .dts file.
> 
> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> ---
>  scripts/Makefile.lib |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 0be6f11..e3a149e 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -266,6 +266,9 @@ $(obj)/%.dtb.S: $(obj)/%.dtb
>  quiet_cmd_dtc = DTC     $@
>  cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile) $<
>  
> +quiet_cmd_dtc_cpp = DTC+CPP $@
> +cmd_dtc_cpp = $(CC) -E -Wp,-MD,$(depfile) -xc $< | $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -
this should go to Makefile.build

and we should keep the same nomecalture as lds with lds.S

here dts.S

and is it possible to cmd with it

Best Regards,
J.