78a6854e21
Add a check for the existence of input files and exit (with failure) if they are missing. Without this additional check, missing files produce error messages but still result in an output file being generated and a successful exit code. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> Signed-off-by: Michal Marek <mmarek@suse.com>
163 lines
4 KiB
Bash
Executable file
163 lines
4 KiB
Bash
Executable file
#!/bin/sh
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# merge_config.sh - Takes a list of config fragment values, and merges
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# them one by one. Provides warnings on overridden values, and specified
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# values that did not make it to the resulting .config file (due to missed
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# dependencies or config symbol removal).
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#
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# Portions reused from kconf_check and generate_cfg:
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# http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/kconf_check
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# http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/generate_cfg
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#
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# Copyright (c) 2009-2010 Wind River Systems, Inc.
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# Copyright 2011 Linaro
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 2 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the GNU General Public License for more details.
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clean_up() {
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rm -f $TMP_FILE
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exit
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}
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trap clean_up HUP INT TERM
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usage() {
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echo "Usage: $0 [OPTIONS] [CONFIG [...]]"
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echo " -h display this help text"
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echo " -m only merge the fragments, do not execute the make command"
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echo " -n use allnoconfig instead of alldefconfig"
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echo " -r list redundant entries when merging fragments"
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echo " -O dir to put generated output files"
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}
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RUNMAKE=true
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ALLTARGET=alldefconfig
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WARNREDUN=false
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OUTPUT=.
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while true; do
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case $1 in
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"-n")
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ALLTARGET=allnoconfig
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shift
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continue
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;;
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"-m")
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RUNMAKE=false
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shift
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continue
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;;
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"-h")
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usage
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exit
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;;
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"-r")
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WARNREDUN=true
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shift
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continue
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;;
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"-O")
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if [ -d $2 ];then
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OUTPUT=$(echo $2 | sed 's/\/*$//')
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else
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echo "output directory $2 does not exist" 1>&2
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exit 1
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fi
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shift 2
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continue
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;;
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*)
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break
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;;
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esac
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done
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if [ "$#" -lt 2 ] ; then
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usage
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exit
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fi
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INITFILE=$1
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shift;
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if [ ! -r "$INITFILE" ]; then
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echo "The base file '$INITFILE' does not exist. Exit." >&2
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exit 1
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fi
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MERGE_LIST=$*
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SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p"
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TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
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echo "Using $INITFILE as base"
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cat $INITFILE > $TMP_FILE
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# Merge files, printing warnings on overridden values
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for MERGE_FILE in $MERGE_LIST ; do
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echo "Merging $MERGE_FILE"
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if [ ! -r "$MERGE_FILE" ]; then
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echo "The merge file '$MERGE_FILE' does not exist. Exit." >&2
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exit 1
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fi
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CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
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for CFG in $CFG_LIST ; do
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grep -q -w $CFG $TMP_FILE || continue
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PREV_VAL=$(grep -w $CFG $TMP_FILE)
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NEW_VAL=$(grep -w $CFG $MERGE_FILE)
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if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
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echo Value of $CFG is redefined by fragment $MERGE_FILE:
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echo Previous value: $PREV_VAL
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echo New value: $NEW_VAL
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echo
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elif [ "$WARNREDUN" = "true" ]; then
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echo Value of $CFG is redundant by fragment $MERGE_FILE:
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fi
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sed -i "/$CFG[ =]/d" $TMP_FILE
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done
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cat $MERGE_FILE >> $TMP_FILE
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done
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if [ "$RUNMAKE" = "false" ]; then
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cp $TMP_FILE $OUTPUT/.config
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echo "#"
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echo "# merged configuration written to $OUTPUT/.config (needs make)"
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echo "#"
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clean_up
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exit
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fi
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# If we have an output dir, setup the O= argument, otherwise leave
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# it blank, since O=. will create an unnecessary ./source softlink
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OUTPUT_ARG=""
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if [ "$OUTPUT" != "." ] ; then
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OUTPUT_ARG="O=$OUTPUT"
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fi
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# Use the merged file as the starting point for:
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# alldefconfig: Fills in any missing symbols with Kconfig default
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# allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
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make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
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# Check all specified config values took (might have missed-dependency issues)
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for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
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REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
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ACTUAL_VAL=$(grep -w -e "$CFG" $OUTPUT/.config)
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if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
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echo "Value requested for $CFG not in final .config"
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echo "Requested value: $REQUESTED_VAL"
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echo "Actual value: $ACTUAL_VAL"
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echo ""
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fi
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done
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clean_up
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