1#!/bin/bash 2# 3# config_override.sh base override 4# 5# Combines base and override, removing any Kconfig options from base 6# that conflict with any in override, concatenating what remains and 7# sending the result to standard output. 8# 9# This program is free software; you can redistribute it and/or modify 10# it under the terms of the GNU General Public License as published by 11# the Free Software Foundation; either version 2 of the License, or 12# (at your option) any later version. 13# 14# This program is distributed in the hope that it will be useful, 15# but WITHOUT ANY WARRANTY; without even the implied warranty of 16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17# GNU General Public License for more details. 18# 19# You should have received a copy of the GNU General Public License 20# along with this program; if not, you can access it online at 21# http://www.gnu.org/licenses/gpl-2.0.html. 22# 23# Copyright (C) IBM Corporation, 2017 24# 25# Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com> 26 27base=$1 28if test -r $base 29then 30 : 31else 32 echo Base file $base unreadable!!! 33 exit 1 34fi 35 36override=$2 37if test -r $override 38then 39 : 40else 41 echo Override file $override unreadable!!! 42 exit 1 43fi 44 45T=${TMPDIR-/tmp}/config_override.sh.$$ 46trap 'rm -rf $T' 0 47mkdir $T 48 49sed < $override -e 's/^/grep -v "/' -e 's/=.*$/="/' | 50 awk ' 51 { 52 if (last) 53 print last " |"; 54 last = $0; 55 } 56 END { 57 if (last) 58 print last; 59 }' > $T/script 60sh $T/script < $base 61cat $override 62