Loading...
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# 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 # In case the previous file lacks a new line at the end
171 echo >> $TMP_FILE
172 cat $MERGE_FILE >> $TMP_FILE
173done
174
175if [ "$STRICT_MODE_VIOLATED" = "true" ]; then
176 echo "The fragment redefined a value and strict mode had been passed."
177 exit 1
178fi
179
180if [ "$RUNMAKE" = "false" ]; then
181 cp -T -- "$TMP_FILE" "$KCONFIG_CONFIG"
182 echo "#"
183 echo "# merged configuration written to $KCONFIG_CONFIG (needs make)"
184 echo "#"
185 exit
186fi
187
188# If we have an output dir, setup the O= argument, otherwise leave
189# it blank, since O=. will create an unnecessary ./source softlink
190OUTPUT_ARG=""
191if [ "$OUTPUT" != "." ] ; then
192 OUTPUT_ARG="O=$OUTPUT"
193fi
194
195
196# Use the merged file as the starting point for:
197# alldefconfig: Fills in any missing symbols with Kconfig default
198# allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
199make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
200
201
202# Check all specified config values took (might have missed-dependency issues)
203for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
204
205 REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
206 ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG" || true)
207 if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
208 echo "Value requested for $CFG not in final .config"
209 echo "Requested value: $REQUESTED_VAL"
210 echo "Actual value: $ACTUAL_VAL"
211 echo ""
212 fi
213done