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