[PATCH v2 1/4] kbuild: make sha256sum command available generally

[Sascha Hauer]

On Thu, Aug 18, 2022 at 07:04:44AM +0200, Ahmad Fatoum wrote:
> We currently use the command only for generation a SHA256 sum of the
> barebox proper binary. In preparation for using it in othe Makefiles
> as well, move it to a central location and use the occasion to give
> it a short comment.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
> ---
> v1 -> v2:
>   - no change
> ---
>  images/Makefile      |  7 -------
>  scripts/Makefile.lib | 11 +++++++++++
>  2 files changed, 11 insertions(+), 7 deletions(-)

Applied, thanks

Sascha

> 
> diff --git a/images/Makefile b/images/Makefile
> index 7a8bb94fe0df..218a24ff1ddd 100644
> --- a/images/Makefile
> +++ b/images/Makefile
> @@ -112,13 +112,6 @@ $(obj)/piggy.o: $(obj)/barebox.z FORCE
>  
>  $(obj)/sha_sum.o: $(obj)/barebox.sha.bin FORCE
>  
> -quiet_cmd_sha256bin ?= SHA-BIN $@
> -      cmd_sha256bin = printf "$(shell sed 's/ .*$$//;s/../0x&\n/g;s/\n$$//' $(obj)/barebox.sum | \
> -			while read -r byte; do printf '\%o' $$byte; done)" > $@
> -
> -quiet_cmd_sha256sum ?= SHA     $@
> -      cmd_sha256sum ?= sha256sum $(obj)/barebox.z > $@
> -
>  $(obj)/barebox.sha.bin: $(obj)/barebox.sum FORCE
>  	$(call if_changed,sha256bin)
>  
> diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
> index 46042dab3c8f..16308497b845 100644
> --- a/scripts/Makefile.lib
> +++ b/scripts/Makefile.lib
> @@ -272,6 +272,17 @@ cmd_ld = $(LD) $(KBUILD_LDFLAGS) $(EXTRA_LDFLAGS) $(LDFLAGS_$(@F)) \
>  quiet_cmd_objcopy = OBJCOPY $@
>  cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
>  
> +# Hashing
> +# ---------------------------------------------------------------------------
> +# POSIX printf (e.g. dash's) doesn't support \xHH, but octal sequences are fine
> +
> +quiet_cmd_sha256bin ?= SHA-BIN $@
> +      cmd_sha256bin = printf "$(shell sed 's/ .*$$//;s/../0x&\n/g;s/\n$$//' $< | \
> +			while read -r byte; do printf '\%o' $$byte; done)" > $@
> +
> +quiet_cmd_sha256sum ?= SHA     $@
> +      cmd_sha256sum ?= sha256sum $< > $@
> +
>  # Decompressor for barebox proper binary when using PBL
>  # ---------------------------------------------------------------------------
>  
> -- 
> 2.30.2
> 
> 
> 

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