# Contributor: Carlo Landmeter <clandmeter@gmail.com>
# Maintainer:
pkgname=grub
_ver=2.02~beta3
pkgver=2.02_beta3
pkgrel=4
pkgdesc="Bootloader with support for Linux, Multiboot and more"
url="https://www.gnu.org/software/grub/"
arch="all !armhf"
license="GPLv3+"
depends=""
depends_dev=""
makedepends="$depends_dev bison flex linux-headers xz-dev lvm2-dev
	automake autoconf libtool python2"
install=""
# strip handled by grub Makefiles, abuild strip breaks xen pv-grub
options="!strip"
subpackages="$pkgname-dev $pkgname-doc $pkgname-efi"
if [ "$CARCH" == "x86_64" ]; then
	subpackages="$subpackages $pkgname-xenhost"
fi
source="ftp://alpha.gnu.org/gnu/grub/grub-$_ver.tar.xz
	2.02_beta3-gcc6-ld-no-pie.patch
	fix-gcc-no-pie-specs.patch
	grub2-accept-empty-module.patch
	grub-xen-host_grub.cfg
	"
builddir="$srcdir/grub-$_ver"

# currently grub only builds on x86* and aarch64 systems
# aarch64 is not supported on pc/bios platform.
if [ ! "$CARCH" = aarch64 ]; then
	subpackages="$subpackages $pkgname-bios"
fi

_build_bios() {
	cd $builddir/bios
	./configure \
		--build=$CBUILD \
		--host=$CHOST \
		--prefix=/usr \
		--sysconfdir=/etc \
		--mandir=/usr/share/man \
		--localstatedir=/var \
		--disable-nls \
		--disable-werror \
		--with-platform=pc \
		|| return 1
	make || return 1
}

_build_efi() {
	cd $builddir/efi
	./configure \
		--build=$CBUILD \
		--host=$CHOST \
		--prefix=/usr \
		--sysconfdir=/etc \
		--mandir=/usr/share/man \
		--localstatedir=/var \
		--disable-nls \
		--disable-werror \
		--with-platform=efi \
		--disable-efiemu \
		|| return 1
	make || return 1
}

_build_xen() {
	#Xen is supported only x86_64
	if [ "$CARCH" == "x86_64" ]; then
		cd $builddir/xen
		./configure \
			--build=$CBUILD \
			--host=$CHOST \
			--prefix=/usr \
			--sysconfdir=/etc \
			--mandir=/usr/share/man \
			--localstatedir=/var \
			--disable-nls \
			--disable-werror \
			--with-platform=xen \
				--target=$CARCH \
		|| return 1
		make || return 1
	fi
}

build() {
	cd "$builddir"
	autoreconf -vif || return 1

	cd "$srcdir"
	tmpdir="$srcdir"/tmp
	mv "$builddir" "$tmpdir"

	mkdir "$builddir"
	cp -r "$tmpdir" "$builddir"/bios
	cp -r "$tmpdir" "$builddir"/efi
	mv    "$tmpdir" "$builddir"/xen

	# BIOS build
	if [ ! "$CARCH" = aarch64 ]; then
		msg "Building grub for platform BIOS"
		_build_bios || return 1
	fi
	
	# EFI build
	msg "Building grub for platform EFI"
	_build_efi || return 1

	# xenhost build
	msg "Building grub for platform XEN"
	_build_xen || return 1
}

package() {
	# install BIOS & EFI version into the same directory
	# and overwrite similar files.
	
	# BIOS install
	if [ ! "$CARCH" = aarch64 ]; then
		cd "$builddir"/bios
		make DESTDIR="$pkgdir" install-strip || return 1
	fi

	# EFI install
	cd "$builddir"/efi
	make DESTDIR="$pkgdir" install-strip || return 1

	# xenhost install
	cd "$builddir"/xen

	grub_dir=`mktemp -d`
	cfg=`mktemp`
	grub_memdisk=`mktemp`

	mkdir -p $grub_dir/boot/grub
	echo 'normal (memdisk)/grub.cfg' > $cfg
	sed -e "s/@@PVBOOT_ARCH@@/$CARCH/g" \
		$srcdir/grub-xen-host_grub.cfg \
			> $grub_dir/grub.cfg
	tar -cf - -C $grub_dir grub.cfg > $grub_memdisk

	./grub-mkimage \
		-O $CARCH-xen \
		-c $cfg \
		-d ./grub-core ./grub-core/*.mod \
		-m $grub_memdisk \
		-o $pkgdir/grub-$CARCH-xen.bin

	rm -r "$grub_dir"
	rm "$cfg"
	rm "$grub_memdisk"

	rm -f "$pkgdir"/usr/lib/charset.alias
}

bios() {
	pkgdesc="$pkgdesc (BIOS version)"
	depends="$pkgname"
	mkdir -p $subpkgdir/usr/lib/grub
	mv $pkgdir/usr/lib/grub/*-pc $subpkgdir/usr/lib/grub/
}

efi() {
	pkgdesc="$pkgdesc (EFI version)"
	depends="$pkgname"
	mkdir -p $subpkgdir/usr/lib/grub
	mv $pkgdir/usr/lib/grub/*-efi $subpkgdir/usr/lib/grub/
}

xenhost() {
	pkgdesc="$pkgdesc (XEN host version)"
	mkdir -p $subpkgdir/usr/lib/grub-xen
	mv $pkgdir/*-xen.bin $subpkgdir/usr/lib/grub-xen/
}

md5sums="ab399fc6f74a97d66ff77f04b743149c  grub-2.02~beta3.tar.xz
7a09f166141e2a57f1829dd6cf1424fa  2.02_beta3-gcc6-ld-no-pie.patch
632f1e9dee0f8a4a52e592cb29cdf8cc  fix-gcc-no-pie-specs.patch
5065825ac12ee3162534b8733df84227  grub2-accept-empty-module.patch
429182bb65be24887b377304e43ecbef  grub-xen-host_grub.cfg"
sha256sums="30ec3d555e52a702c3eef449872ef874eff28b320f40b55ffc47f70db8e5ada1  grub-2.02~beta3.tar.xz
14912f087e047259e803be020c0506d9865c1507ae34683c6668b8d4a140c93b  2.02_beta3-gcc6-ld-no-pie.patch
eaa876af6b6253c2ca98a03201b98b0e0a27b9acc120b7937c9292882f2f0e0b  fix-gcc-no-pie-specs.patch
ddc84d56d61043314b5c03af3c9628dca3e3d14dc01b29c4b586f47ce962bdbe  grub2-accept-empty-module.patch
bc658b2a0c0e014e38590c50d5241e33cbc73cf8fbfd31688445be3ceb7da373  grub-xen-host_grub.cfg"
sha512sums="4a530efef4dae45f4046cf3550563f14acb24d25cb88d5e06c93953ca5b1eec115118c6860233a9f627edcddae2571e5d6b867b70ff9dd5c184c9fef83ef7e11  grub-2.02~beta3.tar.xz
fc15c95bf26b28eee3b5a0d8e5fac538445179cea19a8657cd360e37dd5a95010ea2b899d1e4f3692b778a71f79526539ad1c741f028186f0daf135ee1678da0  2.02_beta3-gcc6-ld-no-pie.patch
b9eab870006ab7842e0af27171d3b66fea10835d3fd4e606f241a9898aa28bfc4c1cdf59cece8ad50d2e284a44cba74eb0f390ac29627518f86257a8d586976e  fix-gcc-no-pie-specs.patch
098a1742aef131c85d63b934a9815879b991f2e73030cb90ac4b5dcd07d249fa0dd0a281e52ada0e10f05d59223493bd416eb47543242bf0ba336a0ebc9b2a1a  grub2-accept-empty-module.patch
4e7394e0fff6772c89683039ccf81099ebbfe4f498e6df408977a1488fd59389b6e19afdbf0860ec271e2b2aea0df7216243dcc8235d1ca3af0e7f4d0a9d60a4  grub-xen-host_grub.cfg"