Re: [PATCH v2] merge_config.sh: do not report some differencess between input and output

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On Wed, Feb 8, 2023 at 10:08 PM Łukasz Stelmach <l.stelmach@xxxxxxxxxxx> wrote:
>
> If an input config file contains CONFIG_FOO=n the output one
> will contain a line '# CONFIG_FOO is not set'. merge_config.sh
> should not report it as difference because the end result of
> CONFIG_FOO being disabled is achieved.
>
> Inexistence of CONFIG_FOO (because of unment dependencies) in case
> CONFIG_FOO=n is requested, should also be ignored.
>
> Change-Id: I129f3a0b4205a76d8c42020f8adb72b1889d75fb
> Signed-off-by: Łukasz Stelmach <l.stelmach@xxxxxxxxxxx>
> ---
> Changes in v2:
> - suppress reports reports if an option was "not set" in input files
>   but is missing from the filnal .config due to unmet dependecies.
> - apply the same logic to suppress some reports during the merging
>   phase
>
> BTW. Do you think adding "| sort -u" after "grep -w" to avoid reports
> about repeated entries may make sense or do you want such reports to
> be printed.
>
>  scripts/kconfig/merge_config.sh | 30 ++++++++++++++++++++----------
>  1 file changed, 20 insertions(+), 10 deletions(-)
>
> diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
> index e5b46980c22a..1086bdc7abf2 100755
> --- a/scripts/kconfig/merge_config.sh
> +++ b/scripts/kconfig/merge_config.sh
> @@ -144,12 +144,17 @@ for ORIG_MERGE_FILE in $MERGE_LIST ; do
>                         echo
>                         BUILTIN_FLAG=true
>                 elif [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
> -                       echo Value of $CFG is redefined by fragment $ORIG_MERGE_FILE:
> -                       echo Previous  value: $PREV_VAL
> -                       echo New value:       $NEW_VAL
> -                       echo
> -                       if [ "$STRICT" = "true" ]; then
> -                               STRICT_MODE_VIOLATED=true
> +                       if [ \( "x$PREV_VAL" != "x$CFG=n" -a \
> +                               "x$PREV_VAL" != "x# $CFG is not set" \) -o \
> +                            \( "x$NEW_VAL" != "x"  -a \



In which case does $NEW_VAL become empty?

I think it is opposite.
$PREV_VAL might be empty, $NEW_VAL may specified as =n.









> +                               "x$NEW_VAL" != "x# $CFG is not set" \) ]; then
> +                               echo Value of $CFG is redefined by fragment $ORIG_MERGE_FILE:
> +                               echo Previous  value: $PREV_VAL
> +                               echo New value:       $NEW_VAL
> +                               echo
> +                               if [ "$STRICT" = "true" ]; then
> +                                       STRICT_MODE_VIOLATED=true
> +                               fi
>                         fi
>                 elif [ "$WARNREDUN" = "true" ]; then
>                         echo Value of $CFG is redundant by fragment $ORIG_MERGE_FILE:
> @@ -196,9 +201,14 @@ for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
>         REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
>         ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG" || true)
>         if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
> -               echo "Value requested for $CFG not in final .config"
> -               echo "Requested value:  $REQUESTED_VAL"
> -               echo "Actual value:     $ACTUAL_VAL"
> -               echo ""
> +               if [ \( "x$REQUESTED_VAL" != "x$CFG=n" -a \
> +                       "x$REQUESTED_VAL" != "x# $CFG is not set" \) -o \
> +                    \( "x$ACTUAL_VAL" != "x"  -a \
> +                       "x$ACTUAL_VAL" != "x# $CFG is not set" \) ]; then
> +                       echo "Value requested for $CFG not in final .config"
> +                       echo "Requested value:  $REQUESTED_VAL"
> +                       echo "Actual value:     $ACTUAL_VAL"
> +                       echo ""
> +               fi
>         fi
>  done
> --
> 2.30.2
>


-- 
Best Regards
Masahiro Yamada




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