# Contributor: Carlo Landmeter <clandmeter@gmail.com>
# Maintainer:
pkgname=grub
_ver=2.02~beta3
pkgver=2.02_beta3
pkgrel=5
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="$depends_dev bison flex linux-headers xz-dev lvm2-dev
	automake autoconf libtool python2 freetype-dev"
install=""
# strip handled by grub Makefiles, abuild strip breaks xen pv-grub
options="!strip"
subpackages="$pkgname-dev $pkgname-doc"

# currently grub only builds on x86*, aarch64 and ppc64le systems
case "$CARCH" in
x86)	 subpackages="$subpackages $pkgname-efi $pkgname-bios" ;;
x86_64)  subpackages="$subpackages $pkgname-efi $pkgname-bios $pkgname-xenhost" ;;
aarch64) subpackages="$subpackages $pkgname-efi" ;;
ppc64le) subpackages="$subpackages $pkgname-ieee1275" ;;
esac

source="ftp://alpha.gnu.org/gnu/grub/grub-$_ver.tar.xz
	2.02_beta3-gcc6-ld-no-pie.patch
	fix-gcc-no-pie-specs.patch
	grub2-accept-empty-module.patch
	grub-xen-host_grub.cfg
	2.02_beta3-mkconfig-alpine.patch
	do-not-require-unifont-on-powerpc-ieee1275.patch
	"
builddir="$srcdir/grub-$_ver"


_build_bios() {
	msg "Building grub for platform 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() {
	msg "Building grub for platform 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() {
	msg "Building grub for platform XEN"
	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
}

_build_ieee1275() {
	msg "Building grub for platform IEEE1275"
	cd $builddir/ieee1275
	./configure \
		--build=$CBUILD \
		--host=$CHOST \
		--prefix=/usr \
		--sysconfdir=/etc \
		--mandir=/usr/share/man \
		--localstatedir=/var \
		--disable-nls \
		--disable-werror \
		--with-platform=ieee1275 \
	|| return 1
	make || return 1
}

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" "$builddir"/efi
	cp -r "$tmpdir" "$builddir"/xen
	mv    "$tmpdir" "$builddir"/ieee1275

	case "$CARCH" in
	x86)
		_build_bios || return 1
		_build_efi  || return 1 ;;
	x86_64)
		_build_bios || return 1
		_build_efi  || return 1
		_build_xen  || return 1	;;
	aarch64)
		_build_efi || return 1 ;;
	ppc64le)
		_build_ieee1275 || return 1 ;;
	esac
}

_install_bios() {
	cd "$builddir"/bios
	make DESTDIR="$pkgdir" install-strip || return 1
}

_install_efi() {
	cd "$builddir"/efi
	make DESTDIR="$pkgdir" install-strip || return 1
}

_install_xen() {
	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"
}

_install_ieee1275() {
	cd "$builddir"/ieee1275
	make DESTDIR="$pkgdir" install-strip || return 1
}

package() {
	# install BIOS & EFI version into the same directory
	# and overwrite similar files.

	case "$CARCH" in
	x86)
		_install_bios
		_install_efi ;;
	x86_64)
		_install_bios
		_install_efi
		_install_xen ;;
	aarch64)
		_install_efi ;;
	ppc64le)
		_install_ieee1275 ;;
	esac

	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/
}

ieee1275() {
	pkgdesc="$pkgdesc (IEEE1275 version)"
	depends="$pkgname"
	mkdir -p $subpkgdir/usr/lib/grub
	mv $pkgdir/usr/lib/grub/*-ieee1275 $subpkgdir/usr/lib/grub/
}

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
5de7c1cc11640a3892447f0daa1e3fd1f67b0c474c8aec555e4e6315b5e6c00491ba02c88b420cec221da0640c6961d639f148746df14a0b2c15bda7989cd25c  2.02_beta3-mkconfig-alpine.patch
dde35771d15d85b1fde29454c24772f65acf4d7c1786e8bc05e159f7e9ef3437a5b6fa04e0d87342cdb90d4521fd88888a7853bb88bb0d659df5fb297e27c8a7  do-not-require-unifont-on-powerpc-ieee1275.patch"