linux-kernel - Re: [PATCH v2 01/10] objtool: Move header sync-check ealier in build

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Date:   Wed, 1 Apr 2020 14:32:16 +0200 (CEST)
From:   Miroslav Benes <mbenes@...e.cz>
To:     Julien Thierry <jthierry@...hat.com>
cc:     linux-kernel@...r.kernel.org, jpoimboe@...hat.com,
        peterz@...radead.org, raphael.gault@....com
Subject: Re: [PATCH v2 01/10] objtool: Move header sync-check ealier in
 build

On Fri, 27 Mar 2020, Julien Thierry wrote:

> Currently, the check of tools files against kernel equivalent is only
> done after every object file has been built. 

> This means one might fix
> build issues against outdated headers without seeing a warning about
> this.

Could you explain the above in more detail, please?

Otherwise it looks good.

Miroslav

> Check headers before any object is built. Also, make it part of a
> FORCE'd recipe so every attempt to build objtool will report the
> outdated headers (if any).
> 
> Signed-off-by: Julien Thierry <jthierry@...hat.com>
> ---
>  tools/objtool/Makefile | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
> index ee08aeff30a1..519af6ec4eee 100644
> --- a/tools/objtool/Makefile
> +++ b/tools/objtool/Makefile
> @@ -43,10 +43,10 @@ export srctree OUTPUT CFLAGS SRCARCH AWK
>  include $(srctree)/tools/build/Makefile.include
>  
>  $(OBJTOOL_IN): fixdep FORCE
> +	@$(CONFIG_SHELL) ./sync-check.sh
>  	@$(MAKE) $(build)=objtool
>  
>  $(OBJTOOL): $(LIBSUBCMD) $(OBJTOOL_IN)
> -	@$(CONFIG_SHELL) ./sync-check.sh
>  	$(QUIET_LINK)$(CC) $(OBJTOOL_IN) $(LDFLAGS) -o $@
>  
>  
> -- 
> 2.21.1
>