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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: $0 [OPTIONS] [CONFIG [...]]"
25 echo " -h display this help text"
26 echo " -m only merge the fragments, do not execute the make command"
27 echo " -n use allnoconfig instead of alldefconfig"
28 echo " -r list redundant entries when merging fragments"
29 echo " -y make builtin have precedence over modules"
30 echo " -O dir to put generated output files. Consider setting \$KCONFIG_CONFIG instead."
31 echo
32 echo "Used prefix: '$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
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