[PATCH] ARM: Don't mention the full path of the source directory in mach-types.h

[Lucas Stach]

Hi Uwe,

Am Dienstag, dem 13.02.2024 um 10:28 +0100 schrieb Uwe Kleine-König:
> To make package building reproducible independent of the location of the
> source tree, the absolute path of this source tree must not be mentioned
> in the built artifact. So strip $abs_srctree from FILENAME in the
> output.
> 
> This fixes a warning issued by Yocto:
> 	WARNING: linux-lxatac-6.7-r0 do_package_qa: QA Issue: File /usr/src/debug/linux-lxatac/6.7-r0/arch/arm/include/generated/asm/mach-types.h in package linux-lxatac-src contains reference to TMPDIR
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> ---
>  arch/arm/tools/gen-mach-types | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/tools/gen-mach-types b/arch/arm/tools/gen-mach-types
> index cbe1c33bb871..9592ceb8a102 100644
> --- a/arch/arm/tools/gen-mach-types
> +++ b/arch/arm/tools/gen-mach-types
> @@ -21,10 +21,21 @@ NF == 3 {
>  	  num[nr] = ""; nr++
>  	}
>  
> +# prepend a \ to all special chars in a regexp
> +function quote(s) {
> +	return gensub("[][\\^$.|()*+?{}]", "\\\\&", "g", s)

gensub is a gawk extension and thus will break on systems with a
different awk implementation.

Are you still pursuing this patch?

Regards,
Lucas

> +}
> +
> +# Strip the absolute path of the source tree from the parameter
> +# to make the result independent of where the source is located.
> +function relsrcfile(fn) {
> +	sub("^" quote(ENVIRON["abs_srctree"]) "/", "", fn)
> +	return fn
> +}
>  
>  END	{
>  	  printf("/*\n");
> -	  printf(" * This was automagically generated from %s!\n", FILENAME);
> +	  printf(" * This was automagically generated from %s!\n", relsrcfile(FILENAME));
>  	  printf(" * Do NOT edit\n");
>  	  printf(" */\n\n");
>  	  printf("#ifndef __ASM_ARM_MACH_TYPE_H\n");