Bump buildroot to 2019.02

bsp/buildroot/support/kconfig/merge_config.sh

@@ -32,14 +32,18 @@ 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 "  -O    dir to put generated output files"
+	echo "  -O    dir to put generated output files.  Consider setting \$KCONFIG_CONFIG instead."
 	echo "  -e    colon-separated list of br2-external trees to use (optional)"
+	echo
+	echo "Used prefix: '$CONFIG_PREFIX'. You can redefine it with \$CONFIG_
+	environment variable."
 }
 
-MAKE=true
+RUNMAKE=true
 ALLTARGET=alldefconfig
 WARNREDUN=false
 OUTPUT=.
+CONFIG_PREFIX=${CONFIG_-CONFIG_}
 
 while true; do
 	case $1 in
@@ -49,7 +53,7 @@ while true; do
 		continue
 		;;
 	"-m")
-		MAKE=false
+		RUNMAKE=false
 		shift
 		continue
 		;;
@@ -83,44 +87,66 @@ while true; do
 	esac
 done
 
+if [ "$#" -lt 1 ] ; then
+	usage
+	exit
+fi
+
+if [ -z "$KCONFIG_CONFIG" ]; then
+	if [ "$OUTPUT" != . ]; then
+		KCONFIG_CONFIG=$(readlink -m -- "$OUTPUT/.config")
+	else
+		KCONFIG_CONFIG=.config
+	fi
+fi
+
 INITFILE=$1
 shift;
 
+if [ ! -r "$INITFILE" ]; then
+	echo "The base file '$INITFILE' does not exist.  Exit." >&2
+	exit 1
+fi
+
 MERGE_LIST=$*
-SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p"
+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 -t .tmp.config.XXXXXXXXXX)
 
 echo "Using $INITFILE as base"
 cat $INITFILE > $TMP_FILE
 
-# Merge files, printing warnings on overrided values
+# Merge files, printing warnings on overridden values
 for MERGE_FILE in $MERGE_LIST ; do
 	echo "Merging $MERGE_FILE"
-	CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
+	if [ ! -r "$MERGE_FILE" ]; then
+		echo "The merge file '$MERGE_FILE' does not exist.  Exit." >&2
+		exit 1
+	fi
+	CFG_LIST=$(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $MERGE_FILE)
 
 	for CFG in $CFG_LIST ; do
-		grep -q -w $CFG $TMP_FILE
-		if [ $? -eq 0 ] ; then
-			PREV_VAL=$(grep -w $CFG $TMP_FILE)
-			NEW_VAL=$(grep -w $CFG $MERGE_FILE)
-			if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
+		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:
 			echo Previous  value: $PREV_VAL
 			echo New value:       $NEW_VAL
 			echo
-			elif [ "$WARNREDUN" = "true" ]; then
+		elif [ "$WARNREDUN" = "true" ]; then
 			echo Value of $CFG is redundant by fragment $MERGE_FILE:
-			fi
-			sed -i "/$CFG[ =]/d" $TMP_FILE
 		fi
+		sed -i "/$CFG[ =]/d" $TMP_FILE
 	done
 	cat $MERGE_FILE >> $TMP_FILE
 done
 
-if [ "$MAKE" = "false" ]; then
-	cp $TMP_FILE $OUTPUT/.config
+if [ "$RUNMAKE" = "false" ]; then
+	cp -T -- "$TMP_FILE" "$KCONFIG_CONFIG"
 	echo "#"
-	echo "# merged configuration written to $OUTPUT/.config (needs make)"
+	echo "# merged configuration written to $KCONFIG_CONFIG (needs make)"
 	echo "#"
 	clean_up
 	exit
@@ -141,10 +167,10 @@ make KCONFIG_ALLCONFIG=$TMP_FILE $EXTERNAL_ARG $OUTPUT_ARG $ALLTARGET
 
 
 # Check all specified config values took (might have missed-dependency issues)
-for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
+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" $OUTPUT/.config)
+	ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG")
 	if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
 		echo "Value requested for $CFG not in final .config"
 		echo "Requested value:  $REQUESTED_VAL"