Re: [PATCH] kbuild: Cleanup DT Overlay intermediate files as appropriate

[Andy Shevchenko]

On Mon, Nov 14, 2022 at 02:59:39PM -0600, Andrew Davis wrote:
> %.dtbo.o and %.dtbo.S files are used to build-in DT Overlay. They should
> should not be removed by Make or the kernel will be needlessly rebuilt.
> 
> These should be removed by "clean" and ignored by git like other
> intermediate files.

Fixes: 941214a512d8 ("kbuild: Allow DTB overlays to built into .dtbo.S files")

Tested-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

> Reported-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
> Signed-off-by: Andrew Davis <afd@xxxxxx>
> ---
>  .gitignore             | 1 +
>  Makefile               | 4 +++-
>  scripts/Makefile.build | 2 ++
>  3 files changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/.gitignore b/.gitignore
> index 5da004814678d..3ec73ead6757e 100644
> --- a/.gitignore
> +++ b/.gitignore
> @@ -20,6 +20,7 @@
>  *.dtb
>  *.dtbo
>  *.dtb.S
> +*.dtbo.S
>  *.dwo
>  *.elf
>  *.gcno
> diff --git a/Makefile b/Makefile
> index 3735d5996c637..0dd7e8d022289 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -2003,7 +2003,9 @@ clean: $(clean-dirs)
>  	@find $(or $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
>  		\( -name '*.[aios]' -o -name '*.rsi' -o -name '*.ko' -o -name '.*.cmd' \
>  		-o -name '*.ko.*' \
> -		-o -name '*.dtb' -o -name '*.dtbo' -o -name '*.dtb.S' -o -name '*.dt.yaml' \
> +		-o -name '*.dtb' -o -name '*.dtbo' \
> +		-o -name '*.dtb.S' -o -name '*.dtbo.S' \
> +		-o -name '*.dt.yaml' \
>  		-o -name '*.dwo' -o -name '*.lst' \
>  		-o -name '*.su' -o -name '*.mod' -o -name '*.usyms' \
>  		-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
> diff --git a/scripts/Makefile.build b/scripts/Makefile.build
> index 41f3602fc8de7..3ceab076127b7 100644
> --- a/scripts/Makefile.build
> +++ b/scripts/Makefile.build
> @@ -468,10 +468,12 @@ intermediate_targets = $(foreach sfx, $(2), \
>  					$(filter %$(strip $(1)), $(targets))))
>  # %.asn1.o <- %.asn1.[ch] <- %.asn1
>  # %.dtb.o <- %.dtb.S <- %.dtb <- %.dts
> +# %.dtbo.o <- %.dtbo.S <- %.dtbo <- %.dtso
>  # %.lex.o <- %.lex.c <- %.l
>  # %.tab.o <- %.tab.[ch] <- %.y
>  targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \
>  	   $(call intermediate_targets, .dtb.o, .dtb.S .dtb) \
> +	   $(call intermediate_targets, .dtbo.o, .dtbo.S .dtbo) \
>  	   $(call intermediate_targets, .lex.o, .lex.c) \
>  	   $(call intermediate_targets, .tab.o, .tab.c .tab.h)
>  
> -- 
> 2.38.1
> 

-- 
With Best Regards,
Andy Shevchenko