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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: $0 [OPTIONS] [CONFIG [...]]"
25 echo " -h display this help text"
26 echo " -m only merge the fragments, do not execute the make command"
27 echo " -n use allnoconfig instead of alldefconfig"
28 echo " -r list redundant entries when merging fragments"
29 echo " -y make builtin have precedence over modules"
30 echo " -O dir to put generated output files. Consider setting \$KCONFIG_CONFIG instead."
31 echo " -s strict mode. Fail if the fragment redefines any value."
32 echo " -Q disable warning messages for overridden options."
33 echo
34 echo "Used prefix: '$CONFIG_PREFIX'. You can redefine it with \$CONFIG_ environment variable."
35}
36
37RUNMAKE=true
38ALLTARGET=alldefconfig
39WARNREDUN=false
40BUILTIN=false
41OUTPUT=.
42STRICT=false
43CONFIG_PREFIX=${CONFIG_-CONFIG_}
44WARNOVERRIDE=echo
45
46while true; do
47 case $1 in
48 "-n")
49 ALLTARGET=allnoconfig
50 shift
51 continue
52 ;;
53 "-m")
54 RUNMAKE=false
55 shift
56 continue
57 ;;
58 "-h")
59 usage
60 exit
61 ;;
62 "-r")
63 WARNREDUN=true
64 shift
65 continue
66 ;;
67 "-y")
68 BUILTIN=true
69 shift
70 continue
71 ;;
72 "-O")
73 if [ -d $2 ];then
74 OUTPUT=$(echo $2 | sed 's/\/*$//')
75 else
76 echo "output directory $2 does not exist" 1>&2
77 exit 1
78 fi
79 shift 2
80 continue
81 ;;
82 "-s")
83 STRICT=true
84 shift
85 continue
86 ;;
87 "-Q")
88 WARNOVERRIDE=true
89 shift
90 continue
91 ;;
92 *)
93 break
94 ;;
95 esac
96done
97
98if [ "$#" -lt 1 ] ; then
99 usage
100 exit
101fi
102
103if [ -z "$KCONFIG_CONFIG" ]; then
104 if [ "$OUTPUT" != . ]; then
105 KCONFIG_CONFIG=$(readlink -m -- "$OUTPUT/.config")
106 else
107 KCONFIG_CONFIG=.config
108 fi
109fi
110
111INITFILE=$1
112shift;
113
114if [ ! -r "$INITFILE" ]; then
115 echo "The base file '$INITFILE' does not exist. Exit." >&2
116 exit 1
117fi
118
119MERGE_LIST=$*
120SED_CONFIG_EXP1="s/^\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)=.*/\1/p"
121SED_CONFIG_EXP2="s/^# \(${CONFIG_PREFIX}[a-zA-Z0-9_]*\) is not set$/\1/p"
122
123TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
124MERGE_FILE=$(mktemp ./.merge_tmp.config.XXXXXXXXXX)
125
126echo "Using $INITFILE as base"
127
128trap clean_up EXIT
129
130cat $INITFILE > $TMP_FILE
131
132# Merge files, printing warnings on overridden values
133for ORIG_MERGE_FILE in $MERGE_LIST ; do
134 echo "Merging $ORIG_MERGE_FILE"
135 if [ ! -r "$ORIG_MERGE_FILE" ]; then
136 echo "The merge file '$ORIG_MERGE_FILE' does not exist. Exit." >&2
137 exit 1
138 fi
139 cat $ORIG_MERGE_FILE > $MERGE_FILE
140 CFG_LIST=$(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $MERGE_FILE)
141
142 for CFG in $CFG_LIST ; do
143 grep -q -w $CFG $TMP_FILE || continue
144 PREV_VAL=$(grep -w $CFG $TMP_FILE)
145 NEW_VAL=$(grep -w $CFG $MERGE_FILE)
146 BUILTIN_FLAG=false
147 if [ "$BUILTIN" = "true" ] && [ "${NEW_VAL#CONFIG_*=}" = "m" ] && [ "${PREV_VAL#CONFIG_*=}" = "y" ]; then
148 ${WARNOVERRIDE} Previous value: $PREV_VAL
149 ${WARNOVERRIDE} New value: $NEW_VAL
150 ${WARNOVERRIDE} -y passed, will not demote y to m
151 ${WARNOVERRIDE}
152 BUILTIN_FLAG=true
153 elif [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
154 ${WARNOVERRIDE} Value of $CFG is redefined by fragment $ORIG_MERGE_FILE:
155 ${WARNOVERRIDE} Previous value: $PREV_VAL
156 ${WARNOVERRIDE} New value: $NEW_VAL
157 ${WARNOVERRIDE}
158 if [ "$STRICT" = "true" ]; then
159 STRICT_MODE_VIOLATED=true
160 fi
161 elif [ "$WARNREDUN" = "true" ]; then
162 ${WARNOVERRIDE} Value of $CFG is redundant by fragment $ORIG_MERGE_FILE:
163 fi
164 if [ "$BUILTIN_FLAG" = "false" ]; then
165 sed -i "/$CFG[ =]/d" $TMP_FILE
166 else
167 sed -i "/$CFG[ =]/d" $MERGE_FILE
168 fi
169 done
170 cat $MERGE_FILE >> $TMP_FILE
171done
172
173if [ "$STRICT_MODE_VIOLATED" = "true" ]; then
174 echo "The fragment redefined a value and strict mode had been passed."
175 exit 1
176fi
177
178if [ "$RUNMAKE" = "false" ]; then
179 cp -T -- "$TMP_FILE" "$KCONFIG_CONFIG"
180 echo "#"
181 echo "# merged configuration written to $KCONFIG_CONFIG (needs make)"
182 echo "#"
183 exit
184fi
185
186# If we have an output dir, setup the O= argument, otherwise leave
187# it blank, since O=. will create an unnecessary ./source softlink
188OUTPUT_ARG=""
189if [ "$OUTPUT" != "." ] ; then
190 OUTPUT_ARG="O=$OUTPUT"
191fi
192
193
194# Use the merged file as the starting point for:
195# alldefconfig: Fills in any missing symbols with Kconfig default
196# allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
197make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
198
199
200# Check all specified config values took (might have missed-dependency issues)
201for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
202
203 REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
204 ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG" || true)
205 if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
206 echo "Value requested for $CFG not in final .config"
207 echo "Requested value: $REQUESTED_VAL"
208 echo "Actual value: $ACTUAL_VAL"
209 echo ""
210 fi
211done
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 echo " -O dir to put generated output files. Consider setting \$KCONFIG_CONFIG instead."
36}
37
38RUNMAKE=true
39ALLTARGET=alldefconfig
40WARNREDUN=false
41OUTPUT=.
42
43while true; do
44 case $1 in
45 "-n")
46 ALLTARGET=allnoconfig
47 shift
48 continue
49 ;;
50 "-m")
51 RUNMAKE=false
52 shift
53 continue
54 ;;
55 "-h")
56 usage
57 exit
58 ;;
59 "-r")
60 WARNREDUN=true
61 shift
62 continue
63 ;;
64 "-O")
65 if [ -d $2 ];then
66 OUTPUT=$(echo $2 | sed 's/\/*$//')
67 else
68 echo "output directory $2 does not exist" 1>&2
69 exit 1
70 fi
71 shift 2
72 continue
73 ;;
74 *)
75 break
76 ;;
77 esac
78done
79
80if [ "$#" -lt 1 ] ; then
81 usage
82 exit
83fi
84
85if [ -z "$KCONFIG_CONFIG" ]; then
86 if [ "$OUTPUT" != . ]; then
87 KCONFIG_CONFIG=$(readlink -m -- "$OUTPUT/.config")
88 else
89 KCONFIG_CONFIG=.config
90 fi
91fi
92
93INITFILE=$1
94shift;
95
96if [ ! -r "$INITFILE" ]; then
97 echo "The base file '$INITFILE' does not exist. Exit." >&2
98 exit 1
99fi
100
101MERGE_LIST=$*
102SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p"
103TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
104
105echo "Using $INITFILE as base"
106cat $INITFILE > $TMP_FILE
107
108# Merge files, printing warnings on overridden values
109for MERGE_FILE in $MERGE_LIST ; do
110 echo "Merging $MERGE_FILE"
111 if [ ! -r "$MERGE_FILE" ]; then
112 echo "The merge file '$MERGE_FILE' does not exist. Exit." >&2
113 exit 1
114 fi
115 CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
116
117 for CFG in $CFG_LIST ; do
118 grep -q -w $CFG $TMP_FILE || continue
119 PREV_VAL=$(grep -w $CFG $TMP_FILE)
120 NEW_VAL=$(grep -w $CFG $MERGE_FILE)
121 if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
122 echo Value of $CFG is redefined by fragment $MERGE_FILE:
123 echo Previous value: $PREV_VAL
124 echo New value: $NEW_VAL
125 echo
126 elif [ "$WARNREDUN" = "true" ]; then
127 echo Value of $CFG is redundant by fragment $MERGE_FILE:
128 fi
129 sed -i "/$CFG[ =]/d" $TMP_FILE
130 done
131 cat $MERGE_FILE >> $TMP_FILE
132done
133
134if [ "$RUNMAKE" = "false" ]; then
135 cp -T -- "$TMP_FILE" "$KCONFIG_CONFIG"
136 echo "#"
137 echo "# merged configuration written to $KCONFIG_CONFIG (needs make)"
138 echo "#"
139 clean_up
140 exit
141fi
142
143# If we have an output dir, setup the O= argument, otherwise leave
144# it blank, since O=. will create an unnecessary ./source softlink
145OUTPUT_ARG=""
146if [ "$OUTPUT" != "." ] ; then
147 OUTPUT_ARG="O=$OUTPUT"
148fi
149
150
151# Use the merged file as the starting point for:
152# alldefconfig: Fills in any missing symbols with Kconfig default
153# allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
154make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
155
156
157# Check all specified config values took (might have missed-dependency issues)
158for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
159
160 REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
161 ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG")
162 if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
163 echo "Value requested for $CFG not in final .config"
164 echo "Requested value: $REQUESTED_VAL"
165 echo "Actual value: $ACTUAL_VAL"
166 echo ""
167 fi
168done
169
170clean_up