#!/bin/bash # Manipulate options in a .config file from the command line usage() { cat >&2 <<EOL Manipulate options in a .config file from the command line. Usage: config options command ... commands: --enable|-e option Enable option --disable|-d option Disable option --module|-m option Turn option into a module --state|-s option Print state of option (n,y,m,undef) --enable-after|-E beforeopt option Enable option directly after other option --disable-after|-D beforeopt option Disable option directly after other option --module-after|-M beforeopt option Turn option into module directly after other option commands can be repeated multiple times options: --file .config file to change (default .config) config doesn't check the validity of the .config file. This is done at next make time. The options need to be already in the file before they can be changed, but sometimes you can cheat with the --*-after options. EOL exit 1 } checkarg() { ARG="$1" if [ "$ARG" = "" ] ; then usage fi case "$ARG" in CONFIG_*) ARG="${ARG/CONFIG_/}" ;; esac ARG="`echo $ARG | tr a-z A-Z`" } replace() { sed -i -e "$@" $FN } if [ "$1" = "--file" ]; then FN="$2" if [ "$FN" = "" ] ; then usage fi shift shift else FN=.config fi if [ "$1" = "" ] ; then usage fi while [ "$1" != "" ] ; do CMD="$1" shift case "$CMD" in --enable|-e) checkarg "$1" replace "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/" shift ;; --disable|-d) checkarg "$1" replace "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/" shift ;; --module|-m) checkarg "$1" replace "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \ -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/" shift ;; --state|-s) checkarg "$1" if grep -q "# CONFIG_$ARG is not set" $FN ; then echo n else V="$(grep "^CONFIG_$ARG=" $FN)" if [ $? != 0 ] ; then echo undef else V="${V/CONFIG_$ARG=/}" V="${V/\"/}" echo "$V" fi fi shift ;; --enable-after|-E) checkarg "$1" A=$ARG checkarg "$2" B=$ARG replace "/CONFIG_$A=[my]/aCONFIG_$B=y" \ -e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=y" \ -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=y/" shift shift ;; --disable-after|-D) checkarg "$1" A=$ARG checkarg "$2" B=$ARG replace "/CONFIG_$A=[my]/a# CONFIG_$B is not set" \ -e "/# CONFIG_$ARG is not set/a/# CONFIG_$ARG is not set" \ -e "s/CONFIG_$ARG=[my]/# CONFIG_$ARG is not set/" shift shift ;; --module-after|-M) checkarg "$1" A=$ARG checkarg "$2" B=$ARG replace "/CONFIG_$A=[my]/aCONFIG_$B=m" \ -e "/# CONFIG_$ARG is not set/a/CONFIG_$ARG=m" \ -e "s/CONFIG_$ARG=y/CONFIG_$ARG=m/" \ -e "s/# CONFIG_$ARG is not set/CONFIG_$ARG=m/" shift shift ;; # undocumented because it ignores --file (fixme) --refresh) yes "" | make oldconfig ;; *) usage ;; esac done