misc: microchip_flexcom: introduce microchip_flexcom driver

[oweals/u-boot.git] / scripts / kconfig / merge_config.sh

diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
index 81b0c61bb9e2060c18fb9dd315e8a9e0ae8a195a..67d1314476314590f285a63700c13e047dc17c80 100755 (executable)
--- a/scripts/kconfig/merge_config.sh
+++ b/scripts/kconfig/merge_config.sh
@@ -32,10 +32,10 @@ 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."
 }
 
-MAKE=true
+RUNMAKE=true
 ALLTARGET=alldefconfig
 WARNREDUN=false
 OUTPUT=.
@@ -48,7 +48,7 @@ while true; do
                continue
                ;;
        "-m")
-               MAKE=false
+               RUNMAKE=false
                shift
                continue
                ;;
@@ -77,9 +77,27 @@ 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"
 TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
@@ -87,34 +105,36 @@ TMP_FILE=$(mktemp ./.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 $MERGE_FILE"
+       if [ ! -r "$MERGE_FILE" ]; then
+               echo "The merge file '$MERGE_FILE' does not exist.  Exit." >&2
+               exit 1
+       fi
        CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $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 $KCONFIG_CONFIG (needs make)"
        echo "#"
        clean_up
        exit
@@ -138,7 +158,7 @@ make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
 for CFG in $(sed -n "$SED_CONFIG_EXP" $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"