From: Yann E. MORIN <yann.morin.1998@free.fr>
Date: Thu, 7 Jun 2012 23:48:57 +0000 (+0200)
Subject: scripts/config: add option to undef a symbol
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d5bfb6b3814b2c9cd83e9395a60fc4b4e42a242d;p=linux-beck.git

scripts/config: add option to undef a symbol

It is currently possible to enable, disable or modularise
a symbol. Also, an undefined symbol is reported as such.

Add a new command to undefine a symbol, by removing the
corresponding line from the .config file.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
---

diff --git a/scripts/config b/scripts/config
index 9723c7de07cc..f65a44a7886a 100755
--- a/scripts/config
+++ b/scripts/config
@@ -17,6 +17,7 @@ commands:
 	                     Set option to "string"
 	--set-val option value
 	                     Set option to value
+	--undefine|-u option Undefine option
 	--state|-s option    Print state of option (n,y,m,undef)
 
 	--enable-after|-E beforeopt option
@@ -73,6 +74,12 @@ set_var() {
 	fi
 }
 
+undef_var() {
+	local name=$1
+
+	sed -ri "/^($name=|# $name is not set)/d" "$FN"
+}
+
 if [ "$1" = "--file" ]; then
 	FN="$2"
 	if [ "$FN" = "" ] ; then
@@ -134,6 +141,9 @@ while [ "$1" != "" ] ; do
 		set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1"
 		shift
 		;;
+	--undefine|-u)
+		undef_var "${CONFIG_}$ARG"
+		;;
 
 	--state|-s)
 		if grep -q "# ${CONFIG_}$ARG is not set" $FN ; then