1 #!/bin/bash 2 # 3 # Usage: configinit.sh config-spec-file [ build output dir ] 4 # 5 # Create a .config file from the spec file. Run from the kernel source tree. 6 # Exits with 0 if all went well, with 1 if all went well but the config 7 # did not match, and some other number for other failures. 8 # 9 # The first argument is the .config specification file, which contains 10 # desired settings, for example, "CONFIG_NO_HZ=y". For best results, 11 # this should be a full pathname. 12 # 13 # The second argument is a optional path to a build output directory, 14 # for example, "O=/tmp/foo". If this argument is omitted, the .config 15 # file will be generated directly in the current directory. 16 # 17 # This program is free software; you can redistribute it and/or modify 18 # it under the terms of the GNU General Public License as published by 19 # the Free Software Foundation; either version 2 of the License, or 20 # (at your option) any later version. 21 # 22 # This program is distributed in the hope that it will be useful, 23 # but WITHOUT ANY WARRANTY; without even the implied warranty of 24 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 # GNU General Public License for more details. 26 # 27 # You should have received a copy of the GNU General Public License 28 # along with this program; if not, you can access it online at 29 # http://www.gnu.org/licenses/gpl-2.0.html. 30 # 31 # Copyright (C) IBM Corporation, 2013 32 # 33 # Authors: Paul E. McKenney <paulmck (at] linux.vnet.ibm.com> 34 35 T=${TMPDIR-/tmp}/configinit.sh.$$ 36 trap 'rm -rf $T' 0 37 mkdir $T 38 39 # Capture config spec file. 40 41 c=$1 42 buildloc=$2 43 builddir= 44 if test -n $buildloc 45 then 46 if echo $buildloc | grep -q '^O=' 47 then 48 builddir=`echo $buildloc | sed -e 's/^O=//'` 49 if test ! -d $builddir 50 then 51 mkdir $builddir 52 fi 53 else 54 echo Bad build directory: \"$builddir\" 55 exit 2 56 fi 57 fi 58 59 sed -e 's/^\(CONFIG[0-9A-Z_]*\)=.*$/grep -v "^# \1" |/' < $c > $T/u.sh 60 sed -e 's/^\(CONFIG[0-9A-Z_]*=\).*$/grep -v \1 |/' < $c >> $T/u.sh 61 grep '^grep' < $T/u.sh > $T/upd.sh 62 echo "cat - $c" >> $T/upd.sh 63 make mrproper 64 make $buildloc distclean > $builddir/Make.distclean 2>&1 65 make $buildloc $TORTURE_DEFCONFIG > $builddir/Make.defconfig.out 2>&1 66 mv $builddir/.config $builddir/.config.sav 67 sh $T/upd.sh < $builddir/.config.sav > $builddir/.config 68 cp $builddir/.config $builddir/.config.new 69 yes '' | make $buildloc oldconfig > $builddir/Make.oldconfig.out 2> $builddir/Make.oldconfig.err 70 71 # verify new config matches specification. 72 configcheck.sh $builddir/.config $c 73 74 exit 0 75
