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# Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

# FIXME: somehow depend on python-2 only; using python eclass maybe?
# NOTE: good idea would be to move grub-2 to new package called grub2

EAPI=4

if [[ ${PV} == "9999" ]] ; then
	EBZR_REPO_URI="http://bzr.savannah.gnu.org/r/grub/trunk/grub/"
	LIVE_ECLASS="autotools bzr"
	SRC_URI=""
else
	MY_P=${P/_/\~}
	SRC_URI="mirror://gnu/${PN}/${MY_P}.tar.xz
		mirror://gentoo/${MY_P}.tar.xz"
	S=${WORKDIR}/${MY_P}
fi

inherit mount-boot eutils flag-o-matic toolchain-funcs ${LIVE_ECLASS}
unset LIVE_ECLASS

DESCRIPTION="GNU GRUB boot loader"
HOMEPAGE="http://www.gnu.org/software/grub/"

LICENSE="GPL-3"
SLOT="0"
[[ ${PV} != "9999" ]] && KEYWORDS="~amd64 ~x86"
IUSE="custom-cflags debug device-mapper nls static sdl truetype"

# os-prober: Used on runtime to detect other OSes
# xorriso: Used on runtime for mkrescue
RDEPEND="
	app-cdr/xorriso
	dev-libs/lzo
	sys-boot/os-prober
	>=sys-libs/ncurses-5.2-r5
	debug? (
		sdl? ( media-libs/libsdl )
	)
	device-mapper? ( >=sys-fs/lvm2-2.02.45 )
	truetype? ( media-libs/freetype >=media-fonts/unifont-5 )"
DEPEND="${RDEPEND}
	>=dev-lang/python-2.5.2
"
if [[ ${PV} == "9999" ]]; then
	DEPEND+=" >=sys-devel/autogen-5.10 sys-apps/help2man"
else
	DEPEND+=" app-arch/xz-utils"
fi

export STRIP_MASK="*/grub/*/*.mod"
QA_EXECSTACK="
	sbin/grub-probe
	sbin/grub-setup
	sbin/grub-mkdevicemap
	bin/grub-script-check
	bin/grub-fstest
"

DOCS=( AUTHORS ChangeLog NEWS README THANKS TODO )

src_prepare() {
	epatch_user

	# autogen.sh does more than just run autotools
	if [[ ${PV} == "9999" ]] ; then
		sed -i -e '/^autoreconf/ d' autogen.sh || die
		(. ./autogen.sh) || die
		eautoreconf
	fi
}

src_configure() {
	use custom-cflags || unset CFLAGS CPPFLAGS LDFLAGS
	use static && append-ldflags -static

	econf \
		--disable-werror \
		--sbindir=/sbin \
		--bindir=/bin \
		--libdir=/$(get_libdir) \
		--disable-efiemu \
		$(use_enable device-mapper) \
		$(use_enable truetype grub-mkfont) \
		$(use_enable nls) \
		$(use_enable debug mm-debug) \
		$(use sdl && use_enable debug grub-emu-sdl) \
		$(use_enable debug grub-emu-usb)
}

src_install() {
	default

	insinto /etc/default
	newins "${FILESDIR}"/defaults grub
	cat <<-EOF >> "${D}"/lib*/grub/grub-mkconfig_lib
	GRUB_DISTRIBUTOR="Gentoo"
EOF
}

setup_boot_dir() {
	local dir=$1

	if [[ ! -e ${dir}/grub.cfg ]]; then
		# display the link to guide if user didn't set up anything yet.
		elog "For informations how to configure grub-2 please reffer to guide:"
		# FIXME: we don't have any guide yet!
		# Lets just use archlinux wiki until we have some.
		elog "    https://wiki.archlinux.org/index.php/GRUB2"
	fi

	if [[ ! -e ${dir}/grub.cfg && -e ${dir}/menu.lst ]] ; then
		# This is first grub2 install and we have old configuraton for
		# grub1 around. Lets try to generate grub.cfg from it so user
		# does not loose any stuff when rebooting.
		# NOTE: in long term he still NEEDS to migrate to grub.d stuff.
		einfo "Running: grub-menulst2cfg '${dir}/menu.lst' '${dir}/grub.cfg'"
		grub-menulst2cfg "${dir}/menu.lst" "${dir}/grub.cfg" || \
			ewarn "Running grub-menulst2cfg failed!"

		einfo "Even if we just created configuration for your grub-2 using old"
		einfo "grub-1 configuration file you should migrate to use new style"
		einfo "configuration in '${ROOT}/etc/grub.d'."
		einfo
		elog "Remember to run grub-install to install your grub!"
	else
		# we need to refresh the grub.cfg everytime just to play it safe
		einfo "Running: grub-mkconfig -o '${dir}/grub.cfg'"
		grub-mkconfig -o "${dir}/grub.cfg" || \
			ewarn "Running grub-mkconfig failed! Check your configuration files!"
	fi

	elog "Remember to run \"grub-mkconfig -o '${dir}/grub.cfg'\" every time"
	elog "you update the configuration files."
}

pkg_postinst() {
	mount-boot_mount_boot_partition

	setup_boot_dir "${ROOT}"boot/grub

	# needs to be called after we call setup_boot_dir
	mount-boot_pkg_postinst
}