#!/bin/bash
# SPDX-License-Identifier: GPL-2.0-only

#  (get_defconfig), (simple script to pull a defconfig for a particular arch)

#  Copyright (c) 2010 Wind River Systems, Inc.

#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License version 2 as
#  published by the Free Software Foundation.

#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#  See the GNU General Public License for more details.

#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA


arch=$1
defconfig=$2

# this simply yanks the defconfig out of the arch makefile, looks for one
# that doesn't use any nested variables and converts it to a shell assignment
# in order to evaluate and echo it to the user
if [ -z "$defconfig" ]; then
    def_config=`grep KBUILD_DEFCONFIG arch/$arch/Makefile | grep -v \\\\$ | sed 's/://' | sed 's/ //g'`
    eval $def_config
    readlink -f `find . -name $KBUILD_DEFCONFIG | head -n1`
else
    if [ ! -f $defconfig ]; then
	d=`find . -name $defconfig | head -n1`
	if [ -z "$d" ]; then
	    echo "ERROR"
	else
	    readlink -f $d
	fi
    else
	readlink -f $defconfig
    fi
fi