Re: [PATCH] kbuild: suppress stdout from merge_config for silent builds

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On Sun, Dec 08, 2024 at 11:46:14PM +0900, Masahiro Yamada wrote:
> merge_config does not respect the Make's -s (--silent) option.
> 
> Let's sink the stdout from merge_config for silent builds.
> 
> This commit does not cater to the direct invocation of merge_config.sh
> (e.g. arch/mips/Makefile).
> 
> Reported-by: Leon Romanovsky <leon@xxxxxxxxxx>
> Closes: https://lore.kernel.org/all/e534ce33b0e1060eb85ece8429810f087b034c88.1733234008.git.leonro@xxxxxxxxxx/
> Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
> ---
> 
>  scripts/Makefile.defconf | 13 +++++++------
>  scripts/kconfig/Makefile |  4 +++-
>  2 files changed, 10 insertions(+), 7 deletions(-)
> 
> diff --git a/scripts/Makefile.defconf b/scripts/Makefile.defconf
> index 226ea3df3b4b..97bc5161d6bf 100644
> --- a/scripts/Makefile.defconf
> +++ b/scripts/Makefile.defconf
> @@ -1,6 +1,11 @@
>  # SPDX-License-Identifier: GPL-2.0
>  # Configuration heplers
>  
> +cmd_merge_fragments = \
> +	$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
> +	$4 -m -O $(objtree) $(srctree)/arch/$(SRCARCH)/configs/$2 \
> +	$(foreach config,$3,$(srctree)/arch/$(SRCARCH)/configs/$(config).config)
> +
>  # Creates 'merged defconfigs'
>  # ---------------------------------------------------------------------------
>  # Usage:
> @@ -8,9 +13,7 @@
>  #
>  # Input config fragments without '.config' suffix
>  define merge_into_defconfig
> -	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
> -		-m -O $(objtree) $(srctree)/arch/$(SRCARCH)/configs/$(1) \
> -		$(foreach config,$(2),$(srctree)/arch/$(SRCARCH)/configs/$(config).config)
> +	$(call cmd,merge_fragments,$1,$2)
>  	+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
>  endef
>  
> @@ -22,8 +25,6 @@ endef
>  #
>  # Input config fragments without '.config' suffix
>  define merge_into_defconfig_override
> -	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
> -		-Q -m -O $(objtree) $(srctree)/arch/$(SRCARCH)/configs/$(1) \
> -		$(foreach config,$(2),$(srctree)/arch/$(SRCARCH)/configs/$(config).config)
> +	$(call cmd,merge_fragments,$1,$2,-Q)
>  	+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
>  endef
> diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
> index a0a0be38cbdc..fb50bd4f4103 100644
> --- a/scripts/kconfig/Makefile
> +++ b/scripts/kconfig/Makefile
> @@ -105,9 +105,11 @@ configfiles = $(wildcard $(srctree)/kernel/configs/$(1) $(srctree)/arch/$(SRCARC
>  all-config-fragments = $(call configfiles,*.config)
>  config-fragments = $(call configfiles,$@)
>  
> +cmd_merge_fragments = $(srctree)/scripts/kconfig/merge_config.sh -m $(KCONFIG_CONFIG) $(config-fragments)

Did you mean to drop $(CONFIG_SHELL) here? I noticed you kept it in the
other command.

> +
>  %.config: $(obj)/conf
>  	$(if $(config-fragments),, $(error $@ fragment does not exists on this architecture))
> -	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh -m $(KCONFIG_CONFIG) $(config-fragments)
> +	$(call cmd,merge_fragments)
>  	$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
>  
>  PHONY += tinyconfig
> -- 
> 2.43.0
> 




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