#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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#
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# config_override.sh base override
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#
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# Combines base and override, removing any Kconfig options from base
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# that conflict with any in override, concatenating what remains and
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# sending the result to standard output.
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#
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# Copyright (C) IBM Corporation, 2017
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#
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# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
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base=$1
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if test -r $base
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then
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:
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else
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echo Base file $base unreadable!!!
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exit 1
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fi
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override=$2
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if test -r $override
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then
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:
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else
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echo Override file $override unreadable!!!
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exit 1
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fi
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T=${TMPDIR-/tmp}/config_override.sh.$$
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trap 'rm -rf $T' 0
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mkdir $T
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sed < $override -e 's/^/grep -v "/' -e 's/=.*$/="/' |
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awk '
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{
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if (last)
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print last " |";
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last = $0;
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}
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END {
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if (last)
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print last;
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}' > $T/script
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sh $T/script < $base
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cat $override
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