1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0+
3 #
4 # Usage: configinit.sh config-spec-file results-dir
5 #
6 # Create a .config file from the spec file. Run from the kernel source tree.
7 # Exits with 0 if all went well, with 1 if all went well but the config
8 # did not match, and some other number for other failures.
9 #
10 # The first argument is the .config specification file, which contains
11 # desired settings, for example, "CONFIG_NO_HZ=y". For best results,
12 # this should be a full pathname.
13 #
14 # Copyright (C) IBM Corporation, 2013
15 #
16 # Authors: Paul E. McKenney <paulmck@linux.ibm.com>
17
18 T="`mktemp -d ${TMPDIR-/tmp}/configinit.sh.XXXXXX`"
19 trap 'rm -rf $T' 0
20
21 # Capture config spec file.
22
23 c=$1
24 resdir=$2
25
26 sed -e 's/^\(CONFIG[0-9A-Z_]*\)=.*$/grep -v "^# \1" |/' < $c > $T/u.sh
27 sed -e 's/^\(CONFIG[0-9A-Z_]*=\).*$/grep -v \1 |/' < $c >> $T/u.sh
28 grep '^grep' < $T/u.sh > $T/upd.sh
29 echo "cat - $c" >> $T/upd.sh
30 if test -z "$TORTURE_TRUST_MAKE"
31 then
32 make clean > $resdir/Make.clean 2>&1
33 fi
34 make $TORTURE_KMAKE_ARG $TORTURE_DEFCONFIG > $resdir/Make.defconfig.out 2>&1
35 mv .config .config.sav
36 sh $T/upd.sh < .config.sav > .config
37 cp .config .config.new
38 yes '' | make $TORTURE_KMAKE_ARG oldconfig > $resdir/Make.oldconfig.out 2> $resdir/Make.oldconfig.err
39
40 # verify new config matches specification.
41 configcheck.sh .config $c
42
43 exit 0
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