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#!/bin/bash
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#
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# This script takes the merged config files and processes them through oldconfig
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# and listnewconfig
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die()
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{
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echo "$1"
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exit 1
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}
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# stupid function to find top of tree to do kernel make configs
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switch_to_toplevel()
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{
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path="$(pwd)"
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while test -n "$path"
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do
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test -d $path/firmware && \
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test -e $path/MAINTAINERS && \
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test -d $path/drivers && \
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break
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path="$(dirname $path)"
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done
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test -n "$path" || die "Can't find toplevel"
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echo "$path"
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}
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checkoptions()
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{
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/usr/bin/awk '
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/is not set/ {
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split ($0, a, "#");
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split(a[2], b);
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if (NR==FNR) {
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configs[b[1]]="is not set";
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} else {
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if (configs[b[1]] != "" && configs[b[1]] != "is not set")
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print "Found # "b[1] " is not set, after generation, had " b[1] " " configs[b[1]] " in Source tree";
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}
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}
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/=/ {
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split ($0, a, "=");
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if (NR==FNR) {
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configs[a[1]]=a[2];
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} else {
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if (configs[a[1]] != "" && configs[a[1]] != a[2])
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print "Found "a[1]"="configs[a[1]]" after generation, had " a[1]"="a[2]" in Source tree";
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}
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}
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' $1 $2 > .mismatches
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if test -s .mismatches
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then
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echo "Error: Mismatches found in configuration files"
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cat .mismatches
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exit 1
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fi
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}
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function process_configs()
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{
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# assume we are in $source_tree/configs, need to get to top level
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pushd $(switch_to_toplevel)
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for cfg in $SCRIPT_DIR/${PACKAGE_NAME}${KVERREL}${SUBARCH}*.config
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do
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arch=$(head -1 $cfg | cut -b 3-)
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cfgtmp="${cfg}.tmp"
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cfgorig="${cfg}.orig"
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cat $cfg > $cfgorig
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echo -n "Processing $cfg ... "
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# an empty grep is good but leaves a return value, so use # 'true' to bypass
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make ARCH=$arch KCONFIG_CONFIG=$cfg listnewconfig | grep -E 'CONFIG_' > .newoptions || true
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if test -n "$NEWOPTIONS" && test -s .newoptions
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then
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echo "Found unset config items, please set them to an appropriate value"
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cat .newoptions
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rm .newoptions
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exit 1
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fi
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rm .newoptions
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make ARCH=$arch KCONFIG_CONFIG=$cfg oldnoconfig > /dev/null || exit 1
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echo "# $arch" > ${cfgtmp}
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cat "${cfg}" >> ${cfgtmp}
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if test -n "$CHECKOPTIONS"
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then
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checkoptions $cfgtmp $cfgorig
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fi
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mv ${cfgtmp} ${cfg}
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rm ${cfgorig}
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echo "done"
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done
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rm "$SCRIPT_DIR"/*.config.old
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popd > /dev/null
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echo "Processed config files are in $SCRIPT_DIR"
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}
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NEWOPTIONS=""
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CHECKOPTIONS=""
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while [[ $# -gt 0 ]]
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do
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key="$1"
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case $key in
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-n)
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NEWOPTIONS="x"
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;;
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-c)
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CHECKOPTIONS="x"
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;;
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*)
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break;;
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esac
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shift
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done
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PACKAGE_NAME="${1:-kernel}" # defines the package name used
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KVERREL="$(test -n "$2" && echo "-$2" || echo "")"
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SUBARCH="$(test -n "$3" && echo "-$3" || echo "")"
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SCRIPT="$(readlink -f $0)"
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OUTPUT_DIR="$PWD"
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SCRIPT_DIR="$(dirname $SCRIPT)"
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# to handle this script being a symlink
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cd $SCRIPT_DIR
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process_configs
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