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).
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
11 # Copyright (c) 2009-2010 Wind River Systems, Inc.
12 # Copyright 2011 Linaro
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.
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.
27 trap clean_up HUP INT TERM
30 echo "Usage: $0 [OPTIONS] [CONFIG [...]]"
31 echo " -h display this help text"
32 echo " -m only merge the fragments, do not execute the make command"
33 echo " -n use allnoconfig instead of alldefconfig"
34 echo " -r list redundant entries when merging fragments"
35 echo " -O dir to put generated output files"
39 ALLTARGET=alldefconfig
66 OUTPUT=$(echo $2 | sed 's/\/*$//')
68 echo "output directory $2 does not exist" 1>&2
80 if [ "$#" -lt 2 ] ; then
89 SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p"
90 TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
92 echo "Using $INITFILE as base"
93 cat $INITFILE > $TMP_FILE
95 # Merge files, printing warnings on overrided values
96 for MERGE_FILE in $MERGE_LIST ; do
97 echo "Merging $MERGE_FILE"
98 CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
100 for CFG in $CFG_LIST ; do
101 grep -q -w $CFG $TMP_FILE
102 if [ $? -eq 0 ] ; then
103 PREV_VAL=$(grep -w $CFG $TMP_FILE)
104 NEW_VAL=$(grep -w $CFG $MERGE_FILE)
105 if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
106 echo Value of $CFG is redefined by fragment $MERGE_FILE:
107 echo Previous value: $PREV_VAL
108 echo New value: $NEW_VAL
110 elif [ "$WARNREDUN" = "true" ]; then
111 echo Value of $CFG is redundant by fragment $MERGE_FILE:
113 sed -i "/$CFG[ =]/d" $TMP_FILE
116 cat $MERGE_FILE >> $TMP_FILE
119 if [ "$MAKE" = "false" ]; then
120 cp $TMP_FILE $OUTPUT/.config
122 echo "# merged configuration written to $OUTPUT/.config (needs make)"
128 # If we have an output dir, setup the O= argument, otherwise leave
129 # it blank, since O=. will create an unnecessary ./source softlink
131 if [ "$OUTPUT" != "." ] ; then
132 OUTPUT_ARG="O=$OUTPUT"
136 # Use the merged file as the starting point for:
137 # alldefconfig: Fills in any missing symbols with Kconfig default
138 # allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
139 make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
142 # Check all specified config values took (might have missed-dependency issues)
143 for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
145 REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
146 ACTUAL_VAL=$(grep -w -e "$CFG" $OUTPUT/.config)
147 if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
148 echo "Value requested for $CFG not in final .config"
149 echo "Requested value: $REQUESTED_VAL"
150 echo "Actual value: $ACTUAL_VAL"