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#!/usr/bin/env sh

#  helper script: builds GRUB2 source code
#
#	Copyright (C) 2014, 2015, 2020, 2023 Leah Rowe <info@minifree.org>
#	Copyright (C) 2015, 2016 Klemens Nanni <contact@autoboot.org>
#
#	This program is free software: you can redistribute it and/or modify
#	it under the terms of the GNU General Public License as published by
#	the Free Software Foundation, either version 3 of the License, or
#	(at your option) any later version.
#
#	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, see <http://www.gnu.org/licenses/>.
#

[ "x${DEBUG+set}" = 'xset' ] && set -v
set -u -e

main()
{
	printf "Building GRUB\n"

	if [ ! -d "grub/" ]; then
		./fetch grub || exit 1
	fi

	build_grub
}

build_grub()
{
	(
	cd grub/ || err "cd"

	# clean up first
	if [ -d Makefile ]; then
		make distclean || err "make-distclean"
	fi

	./bootstrap --gnulib-srcdir=gnulib/ --no-git || err "bootstrap"

	# build
	./autogen.sh || err "autogen"
	./configure --with-platform=coreboot || err "configure"
	make -j$(nproc) || err "make"
	)
}

err()
{
	printf "%s: error: %s\n" $0 $1
	exit 1
}

main $@