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