On Mon, Nov 12, 2018 at 5:39 PM Anders Roxell <anders.roxell@xxxxxxxxxx> wrote:
>
> In today's merge_config.sh the order of the config fragment files dictates
> the output of a config option. With this approach we will get different
> .config files depending on the order of the config fragment files.
>
> So doing something like:
> $ ./merge/kconfig/merge_config.sh selftest.config drm.config
>
> Where selftest.config defines DRM=y and drm.config defines DRM=m, the
> result will be "DRM=m".
>
> Rework to add a switch to get builtin '=y' precedence over modules '=m',
> this will result in "DRM=y". If we do something like this:
>
> $ ./merge/kconfig/merge_config.sh -y selftest.config drm.config
>
> Suggested-by: Arnd Bergmann <arnd@xxxxxxxx>
> Signed-off-by: Anders Roxell <anders.roxell@xxxxxxxxxx>
> ---
Applied to linux-kbuild. Thanks!
> scripts/kconfig/merge_config.sh | 37 ++++++++++++++++++++++++++-------
> 1 file changed, 29 insertions(+), 8 deletions(-)
>
> diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
> index 0ef906499646..9b89791b202c 100755
> --- a/scripts/kconfig/merge_config.sh
> +++ b/scripts/kconfig/merge_config.sh
> @@ -22,6 +22,7 @@
>
> clean_up() {
> rm -f $TMP_FILE
> + rm -f $MERGE_FILE
> exit
> }
> trap clean_up HUP INT TERM
> @@ -32,6 +33,7 @@ usage() {
> echo " -m only merge the fragments, do not execute the make command"
> echo " -n use allnoconfig instead of alldefconfig"
> echo " -r list redundant entries when merging fragments"
> + echo " -y make builtin have precedence over modules"
> echo " -O dir to put generated output files. Consider setting \$KCONFIG_CONFIG instead."
> echo
> echo "Used prefix: '$CONFIG_PREFIX'. You can redefine it with \$CONFIG_ environment variable."
> @@ -40,6 +42,7 @@ usage() {
> RUNMAKE=true
> ALLTARGET=alldefconfig
> WARNREDUN=false
> +BUILTIN=false
> OUTPUT=.
> CONFIG_PREFIX=${CONFIG_-CONFIG_}
>
> @@ -64,6 +67,11 @@ while true; do
> shift
> continue
> ;;
> + "-y")
> + BUILTIN=true
> + shift
> + continue
> + ;;
> "-O")
> if [ -d $2 ];then
> OUTPUT=$(echo $2 | sed 's/\/*$//')
> @@ -106,32 +114,45 @@ SED_CONFIG_EXP1="s/^\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)=.*/\1/p"
> SED_CONFIG_EXP2="s/^# \(${CONFIG_PREFIX}[a-zA-Z0-9_]*\) is not set$/\1/p"
>
> TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
> +MERGE_FILE=$(mktemp ./.merge_tmp.config.XXXXXXXXXX)
>
> echo "Using $INITFILE as base"
> cat $INITFILE > $TMP_FILE
>
> # Merge files, printing warnings on overridden values
> -for MERGE_FILE in $MERGE_LIST ; do
> - echo "Merging $MERGE_FILE"
> - if [ ! -r "$MERGE_FILE" ]; then
> - echo "The merge file '$MERGE_FILE' does not exist. Exit." >&2
> +for ORIG_MERGE_FILE in $MERGE_LIST ; do
> + echo "Merging $ORIG_MERGE_FILE"
> + if [ ! -r "$ORIG_MERGE_FILE" ]; then
> + echo "The merge file '$ORIG_MERGE_FILE' does not exist. Exit." >&2
> exit 1
> fi
> + cat $ORIG_MERGE_FILE > $MERGE_FILE
> CFG_LIST=$(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $MERGE_FILE)
>
> for CFG in $CFG_LIST ; do
> grep -q -w $CFG $TMP_FILE || continue
> PREV_VAL=$(grep -w $CFG $TMP_FILE)
> NEW_VAL=$(grep -w $CFG $MERGE_FILE)
> - if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
> - echo Value of $CFG is redefined by fragment $MERGE_FILE:
> + BUILTIN_FLAG=false
> + if [ "$BUILTIN" = "true" ] && [ "${NEW_VAL#CONFIG_*=}" = "m" ] && [ "${PREV_VAL#CONFIG_*=}" = "y" ]; then
> + echo Previous value: $PREV_VAL
> + echo New value: $NEW_VAL
> + echo -y passed, will not demote y to m
> + echo
> + BUILTIN_FLAG=true
> + elif [ "x$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: $NEW_VAL
> echo
> elif [ "$WARNREDUN" = "true" ]; then
> - echo Value of $CFG is redundant by fragment $MERGE_FILE:
> + echo Value of $CFG is redundant by fragment $ORIG_MERGE_FILE:
> + fi
> + if [ "$BUILTIN_FLAG" = "false" ]; then
> + sed -i "/$CFG[ =]/d" $TMP_FILE
> + else
> + sed -i "/$CFG[ =]/d" $MERGE_FILE
> fi
> - sed -i "/$CFG[ =]/d" $TMP_FILE
> done
> cat $MERGE_FILE >> $TMP_FILE
> done
> --
> 2.19.1
>
--
Best Regards
Masahiro Yamada
