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-rwxr-xr-xscripts/config150
1 files changed, 150 insertions, 0 deletions
diff --git a/scripts/config b/scripts/config
new file mode 100755
index 00000000000..68b9761cdc3
--- /dev/null
+++ b/scripts/config
@@ -0,0 +1,150 @@
+#!/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
+
+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
+