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1#!/bin/sh
2# merge_config.sh - Takes a list of config fragment values, and merges
3# them one by one. Provides warnings on overridden values, and specified
4# values that did not make it to the resulting .config file (due to missed
5# dependencies or config symbol removal).
6#
7# Portions reused from kconf_check and generate_cfg:
8# http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/kconf_check
9# http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/generate_cfg
10#
11# Copyright (c) 2009-2010 Wind River Systems, Inc.
12# Copyright 2011 Linaro
13#
14# This program is free software; you can redistribute it and/or modify
15# it under the terms of the GNU General Public License version 2 as
16# published by the Free Software Foundation.
17#
18# This program is distributed in the hope that it will be useful,
19# but WITHOUT ANY WARRANTY; without even the implied warranty of
20# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
21# See the GNU General Public License for more details.
22
23clean_up() {
24 rm -f $TMP_FILE
25 exit
26}
27trap clean_up HUP INT TERM
28
29usage() {
30 echo "Usage: $0 [OPTIONS] [CONFIG [...]]"
31 echo " -h display this help text"
32 echo " -m only merge the fragments, do not execute the make command"
33 echo " -n use allnoconfig instead of alldefconfig"
34 echo " -r list redundant entries when merging fragments"
35}
36
37MAKE=true
38ALLTARGET=alldefconfig
39WARNREDUN=false
40
41while true; do
42 case $1 in
43 "-n")
44 ALLTARGET=allnoconfig
45 shift
46 continue
47 ;;
48 "-m")
49 MAKE=false
50 shift
51 continue
52 ;;
53 "-h")
54 usage
55 exit
56 ;;
57 "-r")
58 WARNREDUN=true
59 shift
60 continue
61 ;;
62 *)
63 break
64 ;;
65 esac
66done
67
68INITFILE=$1
69shift;
70
71MERGE_LIST=$*
72SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p"
73TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
74
75echo "Using $INITFILE as base"
76cat $INITFILE > $TMP_FILE
77
78# Merge files, printing warnings on overrided values
79for MERGE_FILE in $MERGE_LIST ; do
80 echo "Merging $MERGE_FILE"
81 CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
82
83 for CFG in $CFG_LIST ; do
84 grep -q -w $CFG $TMP_FILE
85 if [ $? -eq 0 ] ; then
86 PREV_VAL=$(grep -w $CFG $TMP_FILE)
87 NEW_VAL=$(grep -w $CFG $MERGE_FILE)
88 if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
89 echo Value of $CFG is redefined by fragment $MERGE_FILE:
90 echo Previous value: $PREV_VAL
91 echo New value: $NEW_VAL
92 echo
93 elif [ "$WARNREDUN" = "true" ]; then
94 echo Value of $CFG is redundant by fragment $MERGE_FILE:
95 fi
96 sed -i "/$CFG[ =]/d" $TMP_FILE
97 fi
98 done
99 cat $MERGE_FILE >> $TMP_FILE
100done
101
102if [ "$MAKE" = "false" ]; then
103 cp $TMP_FILE .config
104 echo "#"
105 echo "# merged configuration written to .config (needs make)"
106 echo "#"
107 clean_up
108 exit
109fi
110
111# Use the merged file as the starting point for:
112# alldefconfig: Fills in any missing symbols with Kconfig default
113# allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
114make KCONFIG_ALLCONFIG=$TMP_FILE $ALLTARGET
115
116
117# Check all specified config values took (might have missed-dependency issues)
118for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
119
120 REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
121 ACTUAL_VAL=$(grep -w -e "$CFG" .config)
122 if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
123 echo "Value requested for $CFG not in final .config"
124 echo "Requested value: $REQUESTED_VAL"
125 echo "Actual value: $ACTUAL_VAL"
126 echo ""
127 fi
128done
129
130clean_up
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3#
4# merge_config.sh - Takes a list of config fragment values, and merges
5# them one by one. Provides warnings on overridden values, and specified
6# values that did not make it to the resulting .config file (due to missed
7# dependencies or config symbol removal).
8#
9# Portions reused from kconf_check and generate_cfg:
10# http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/kconf_check
11# http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/generate_cfg
12#
13# Copyright (c) 2009-2010 Wind River Systems, Inc.
14# Copyright 2011 Linaro
15
16set -e
17
18clean_up() {
19 rm -f $TMP_FILE
20 rm -f $MERGE_FILE
21}
22
23usage() {
24 echo "Usage: $0 [OPTIONS] [CONFIG [...]]"
25 echo " -h display this help text"
26 echo " -m only merge the fragments, do not execute the make command"
27 echo " -n use allnoconfig instead of alldefconfig"
28 echo " -r list redundant entries when merging fragments"
29 echo " -y make builtin have precedence over modules"
30 echo " -O dir to put generated output files. Consider setting \$KCONFIG_CONFIG instead."
31 echo
32 echo "Used prefix: '$CONFIG_PREFIX'. You can redefine it with \$CONFIG_ environment variable."
33}
34
35RUNMAKE=true
36ALLTARGET=alldefconfig
37WARNREDUN=false
38BUILTIN=false
39OUTPUT=.
40CONFIG_PREFIX=${CONFIG_-CONFIG_}
41
42while true; do
43 case $1 in
44 "-n")
45 ALLTARGET=allnoconfig
46 shift
47 continue
48 ;;
49 "-m")
50 RUNMAKE=false
51 shift
52 continue
53 ;;
54 "-h")
55 usage
56 exit
57 ;;
58 "-r")
59 WARNREDUN=true
60 shift
61 continue
62 ;;
63 "-y")
64 BUILTIN=true
65 shift
66 continue
67 ;;
68 "-O")
69 if [ -d $2 ];then
70 OUTPUT=$(echo $2 | sed 's/\/*$//')
71 else
72 echo "output directory $2 does not exist" 1>&2
73 exit 1
74 fi
75 shift 2
76 continue
77 ;;
78 *)
79 break
80 ;;
81 esac
82done
83
84if [ "$#" -lt 1 ] ; then
85 usage
86 exit
87fi
88
89if [ -z "$KCONFIG_CONFIG" ]; then
90 if [ "$OUTPUT" != . ]; then
91 KCONFIG_CONFIG=$(readlink -m -- "$OUTPUT/.config")
92 else
93 KCONFIG_CONFIG=.config
94 fi
95fi
96
97INITFILE=$1
98shift;
99
100if [ ! -r "$INITFILE" ]; then
101 echo "The base file '$INITFILE' does not exist. Exit." >&2
102 exit 1
103fi
104
105MERGE_LIST=$*
106SED_CONFIG_EXP1="s/^\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)=.*/\1/p"
107SED_CONFIG_EXP2="s/^# \(${CONFIG_PREFIX}[a-zA-Z0-9_]*\) is not set$/\1/p"
108
109TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
110MERGE_FILE=$(mktemp ./.merge_tmp.config.XXXXXXXXXX)
111
112echo "Using $INITFILE as base"
113
114trap clean_up EXIT
115
116cat $INITFILE > $TMP_FILE
117
118# Merge files, printing warnings on overridden values
119for ORIG_MERGE_FILE in $MERGE_LIST ; do
120 echo "Merging $ORIG_MERGE_FILE"
121 if [ ! -r "$ORIG_MERGE_FILE" ]; then
122 echo "The merge file '$ORIG_MERGE_FILE' does not exist. Exit." >&2
123 exit 1
124 fi
125 cat $ORIG_MERGE_FILE > $MERGE_FILE
126 CFG_LIST=$(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $MERGE_FILE)
127
128 for CFG in $CFG_LIST ; do
129 grep -q -w $CFG $TMP_FILE || continue
130 PREV_VAL=$(grep -w $CFG $TMP_FILE)
131 NEW_VAL=$(grep -w $CFG $MERGE_FILE)
132 BUILTIN_FLAG=false
133 if [ "$BUILTIN" = "true" ] && [ "${NEW_VAL#CONFIG_*=}" = "m" ] && [ "${PREV_VAL#CONFIG_*=}" = "y" ]; then
134 echo Previous value: $PREV_VAL
135 echo New value: $NEW_VAL
136 echo -y passed, will not demote y to m
137 echo
138 BUILTIN_FLAG=true
139 elif [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
140 echo Value of $CFG is redefined by fragment $ORIG_MERGE_FILE:
141 echo Previous value: $PREV_VAL
142 echo New value: $NEW_VAL
143 echo
144 elif [ "$WARNREDUN" = "true" ]; then
145 echo Value of $CFG is redundant by fragment $ORIG_MERGE_FILE:
146 fi
147 if [ "$BUILTIN_FLAG" = "false" ]; then
148 sed -i "/$CFG[ =]/d" $TMP_FILE
149 else
150 sed -i "/$CFG[ =]/d" $MERGE_FILE
151 fi
152 done
153 cat $MERGE_FILE >> $TMP_FILE
154done
155
156if [ "$RUNMAKE" = "false" ]; then
157 cp -T -- "$TMP_FILE" "$KCONFIG_CONFIG"
158 echo "#"
159 echo "# merged configuration written to $KCONFIG_CONFIG (needs make)"
160 echo "#"
161 exit
162fi
163
164# If we have an output dir, setup the O= argument, otherwise leave
165# it blank, since O=. will create an unnecessary ./source softlink
166OUTPUT_ARG=""
167if [ "$OUTPUT" != "." ] ; then
168 OUTPUT_ARG="O=$OUTPUT"
169fi
170
171
172# Use the merged file as the starting point for:
173# alldefconfig: Fills in any missing symbols with Kconfig default
174# allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
175make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
176
177
178# Check all specified config values took (might have missed-dependency issues)
179for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
180
181 REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
182 ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG" || true)
183 if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
184 echo "Value requested for $CFG not in final .config"
185 echo "Requested value: $REQUESTED_VAL"
186 echo "Actual value: $ACTUAL_VAL"
187 echo ""
188 fi
189done