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 151