linux-kernel - Re: [PATCH v2 1/2] kbuild: move headers

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Message-ID: <YdiLO0VstqY66LyP@archlinux-ax161>
Date:   Fri, 7 Jan 2022 11:49:31 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] kbuild: move headers_check.pl to usr/include/

Hi Masahiro,

On Mon, Dec 06, 2021 at 11:35:06AM +0900, Masahiro Yamada wrote:
> This script is only used by usr/include/Makefile. Make it local to
> the directory.
> 
> Update the comment in include/uapi/linux/soundcard.h because
> 'make headers_check' is no longer functional.
> 
> Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
> ---
> 
> Changes in v2:
>  - Fix the comment in soundcard.sh to point to the new file path
> 
>  include/uapi/linux/soundcard.h            | 2 +-
>  usr/include/Makefile                      | 2 +-
>  {scripts => usr/include}/headers_check.pl | 0
>  3 files changed, 2 insertions(+), 2 deletions(-)
>  rename {scripts => usr/include}/headers_check.pl (100%)
> 
> diff --git a/include/uapi/linux/soundcard.h b/include/uapi/linux/soundcard.h
> index f3b21f989872..ac1318793a86 100644
> --- a/include/uapi/linux/soundcard.h
> +++ b/include/uapi/linux/soundcard.h
> @@ -1051,7 +1051,7 @@ typedef struct mixer_vol_table {
>   *	the GPL version of OSS-4.x and build against that version
>   *	of the header.
>   *
> - *	We redefine the extern keyword so that make headers_check
> + *	We redefine the extern keyword so that usr/include/headers_check.pl
>   *	does not complain about SEQ_USE_EXTBUF.
>   */
>  #define SEQ_DECLAREBUF()		SEQ_USE_EXTBUF()
> diff --git a/usr/include/Makefile b/usr/include/Makefile
> index 1c2ae1368079..0e9c3e72f43a 100644
> --- a/usr/include/Makefile
> +++ b/usr/include/Makefile
> @@ -99,7 +99,7 @@ quiet_cmd_hdrtest = HDRTEST $<
>        cmd_hdrtest = \
>  		$(CC) $(c_flags) -S -o /dev/null -x c /dev/null \
>  			$(if $(filter-out $(no-header-test), $*.h), -include $< -include $<); \
> -		$(PERL) $(srctree)/scripts/headers_check.pl $(obj) $(SRCARCH) $<; \
> +		$(PERL) $(srctree)/$(src)/headers_check.pl $(obj) $(SRCARCH) $<; \
>  		touch $@
>  
>  $(obj)/%.hdrtest: $(obj)/%.h FORCE
> diff --git a/scripts/headers_check.pl b/usr/include/headers_check.pl
> similarity index 100%
> rename from scripts/headers_check.pl
> rename to usr/include/headers_check.pl
> -- 
> 2.32.0
> 
> 

After this patch landed in -next, with a completely clean tree, I see:

$ make clean
  CLEAN   usr/include

$ git status --short
 D usr/include/headers_check.pl

Is something like this needed?

diff --git a/usr/include/Makefile b/usr/include/Makefile
index 0e9c3e72f43a..6e9dfd657e89 100644
--- a/usr/include/Makefile
+++ b/usr/include/Makefile
@@ -105,4 +105,4 @@ quiet_cmd_hdrtest = HDRTEST $<
 $(obj)/%.hdrtest: $(obj)/%.h FORCE
 	$(call if_changed_dep,hdrtest)
 
-clean-files += $(filter-out Makefile, $(notdir $(wildcard $(obj)/*)))
+clean-files += $(filter-out headers_check.pl Makefile, $(notdir $(wildcard $(obj)/*)))