75 lines
2.4 KiB
Bash
75 lines
2.4 KiB
Bash
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#!/bin/bash
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#
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# Usage: configinit.sh config-spec-file [ build output dir ]
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#
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# Create a .config file from the spec file. Run from the kernel source tree.
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# Exits with 0 if all went well, with 1 if all went well but the config
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# did not match, and some other number for other failures.
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#
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# The first argument is the .config specification file, which contains
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# desired settings, for example, "CONFIG_NO_HZ=y". For best results,
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# this should be a full pathname.
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#
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# The second argument is a optional path to a build output directory,
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# for example, "O=/tmp/foo". If this argument is omitted, the .config
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# file will be generated directly in the current directory.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, you can access it online at
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# http://www.gnu.org/licenses/gpl-2.0.html.
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#
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# Copyright (C) IBM Corporation, 2013
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#
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# Authors: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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T=/tmp/configinit.sh.$$
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trap 'rm -rf $T' 0
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mkdir $T
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# Capture config spec file.
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c=$1
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buildloc=$2
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builddir=
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if test -n $buildloc
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then
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if echo $buildloc | grep -q '^O='
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then
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builddir=`echo $buildloc | sed -e 's/^O=//'`
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if test ! -d $builddir
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then
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mkdir $builddir
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fi
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else
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echo Bad build directory: \"$buildloc\"
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exit 2
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fi
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fi
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sed -e 's/^\(CONFIG[0-9A-Z_]*\)=.*$/grep -v "^# \1" |/' < $c > $T/u.sh
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sed -e 's/^\(CONFIG[0-9A-Z_]*=\).*$/grep -v \1 |/' < $c >> $T/u.sh
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grep '^grep' < $T/u.sh > $T/upd.sh
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echo "cat - $c" >> $T/upd.sh
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make mrproper
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make $buildloc distclean > $builddir/Make.distclean 2>&1
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make $buildloc $TORTURE_DEFCONFIG > $builddir/Make.defconfig.out 2>&1
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mv $builddir/.config $builddir/.config.sav
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sh $T/upd.sh < $builddir/.config.sav > $builddir/.config
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cp $builddir/.config $builddir/.config.new
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yes '' | make $buildloc oldconfig > $builddir/Make.oldconfig.out 2> $builddir/Make.oldconfig.err
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# verify new config matches specification.
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configcheck.sh $builddir/.config $c
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exit 0
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