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authorMatthias Maennich <maennich@google.com>2020-12-02 18:12:39 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2021-08-10 02:23:39 +0300
commita325db2d8f1d7e33cdc0152b61c3f14fb06f9893 (patch)
tree9f8de77db881a30dec9ba50e90e96d300ada6cc9 /scripts/kconfig
parent36a21d51725af2ce0700c6ebcb6b9594aac658a6 (diff)
downloadlinux-a325db2d8f1d7e33cdc0152b61c3f14fb06f9893.tar.xz
scripts: merge_config: add strict mode to fail upon any redefinition
When merging configuration fragments, it might be of interest to identify mismatches (redefinitions) programmatically. Hence add the option -s (strict mode) to instruct merge_config.sh to bail out in case any redefinition has been detected. With strict mode, warnings are emitted as before, but the script terminates with rc=1. If -y is set to define "builtin having precedence over modules", fragments are still allowed to set =m (while the base config has =y). Strict mode will tolerate that as demotions from =y to =m are ignored when setting -y. Signed-off-by: Matthias Maennich <maennich@google.com> Reviewed-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'scripts/kconfig')
-rwxr-xr-xscripts/kconfig/merge_config.sh15
1 files changed, 15 insertions, 0 deletions
diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
index 63c8565206a4..e5b46980c22a 100755
--- a/scripts/kconfig/merge_config.sh
+++ b/scripts/kconfig/merge_config.sh
@@ -28,6 +28,7 @@ usage() {
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 " -s strict mode. Fail if the fragment redefines any value."
echo
echo "Used prefix: '$CONFIG_PREFIX'. You can redefine it with \$CONFIG_ environment variable."
}
@@ -37,6 +38,7 @@ ALLTARGET=alldefconfig
WARNREDUN=false
BUILTIN=false
OUTPUT=.
+STRICT=false
CONFIG_PREFIX=${CONFIG_-CONFIG_}
while true; do
@@ -75,6 +77,11 @@ while true; do
shift 2
continue
;;
+ "-s")
+ STRICT=true
+ shift
+ continue
+ ;;
*)
break
;;
@@ -141,6 +148,9 @@ for ORIG_MERGE_FILE in $MERGE_LIST ; do
echo Previous value: $PREV_VAL
echo New value: $NEW_VAL
echo
+ if [ "$STRICT" = "true" ]; then
+ STRICT_MODE_VIOLATED=true
+ fi
elif [ "$WARNREDUN" = "true" ]; then
echo Value of $CFG is redundant by fragment $ORIG_MERGE_FILE:
fi
@@ -153,6 +163,11 @@ for ORIG_MERGE_FILE in $MERGE_LIST ; do
cat $MERGE_FILE >> $TMP_FILE
done
+if [ "$STRICT_MODE_VIOLATED" = "true" ]; then
+ echo "The fragment redefined a value and strict mode had been passed."
+ exit 1
+fi
+
if [ "$RUNMAKE" = "false" ]; then
cp -T -- "$TMP_FILE" "$KCONFIG_CONFIG"
echo "#"