# $Id$

PNAME="grub"
PVER="2.02_rc2"
PBUILD="r1"

PCAT="sys-apps"

DESCRIPTION="GNU GRUB2 boot loader."
HOMEPAGE="http://www.gnu.org/software/grub/"

DEPEND=">= sys-apps/mage-release-1
	>= sys-libs/ncurses-5.9
	>= sys-libs/zlib-1.2.5
	>= media-libs/freetype-2.5
	>= sys-fs/device-mapper-2.02"

SDEPEND=">= sys-libs/ncurses-dev-5.9
	>= sys-libs/zlib-dev-1.2.5
	>= media-libs/freetype-dev-2.5"

SRCFILE="${PNAME}-${PVER/_/\~}.tar.gz"
SRCDIR="${BUILDDIR}/${PNAME}-${PVER/_/\~}"

ALX_PKG_KEEP="boot/grub
	etc/conf.d
	etc/grub.d
	usr/sbin/grub-bios-setup
	usr/sbin/grub-install
	usr/sbin/grub-mkconfig
	usr/sbin/grub-probe
	usr/sbin/grub-reboot
	usr/sbin/grub-set-default
	usr/bin/grub-mkimage
	usr/bin/grub-editenv
	usr/bin/grub-mkrelpath
	usr/bin/grub-script-check
	usr/share/grub/grub-mkconfig_lib
	usr/$(mlibdir)/grub/i386-pc"
sminclude mtools alx-split

# += to add injection files (alx.sminc)
SRC_URI+=(
	#gnu://${PNAME}/${SRCFILE}
	http://alpha.gnu.org/gnu/${PNAME}/${SRCFILE}
	mirror://${PNAME}/${SRCFILE}
	mirror://${PNAME}/${PNAME}-2.02-confd.patch
	mirror://${PNAME}/${PNAME}-2.02-cosmetic.patch
	mirror://${PNAME}/${PNAME}-2.00-10_linux-pretty-names-from-etc-os-release.patch
	mirror://${PNAME}/${PNAME}-2.00-alx-add-includedir-function.patch
	mirror://${PNAME}/${PNAME}-2.02-busybox-linux-install.patch
	mirror://${PNAME}/${PNAME}-2.00-grub-mkconfig-fallback-to-blkid-instead-of-grub-probe-for-unknown-root-partition-types.patch
)

UP2DATE="updatecmd_gnu ${PNAME} gz"

# grub doesn't like CFLAG optimation,
# and do you really want that at your bootloader ??
unset CFLAGS
unset CXXFLAGS

src_prepare()
{
	munpack ${SRCFILE} || die
	cd ${SRCDIR}

	# use /etc/conf.d/grub instead of /etc/default/grub
	mpatch ${PNAME}-2.02-confd.patch || die
	# cosmetic fixes
	mpatch ${PNAME}-2.02-cosmetic.patch || die
	# generate pretty names from os-release if GRUB_DISTRIBUTOR is not set
	mpatch ${PNAME}-2.00-10_linux-pretty-names-from-etc-os-release.patch
	# grub-mkconfig: fallback to blkid instead of grub probe for unknown root partition types like f2fs
	mpatch ${PNAME}-2.00-grub-mkconfig-fallback-to-blkid-instead-of-grub-probe-for-unknown-root-partition-types.patch || die

	# fixes some issues with busybox
	# not required anymore with busybox-1.26 and above, grep -vx|-qx is now supported
	#mpatch ${PNAME}-${PVER}-busybox.patch || die
	mpatch ${PNAME}-2.02-busybox-linux-install.patch || die

	# add includedir() function to grub-mkconfig_lib
	# includedir() includes all grub configuration snippets of given directory
	mpatch ${PNAME}-2.00-alx-add-includedir-function.patch || die
}

src_compile()
{
	cd ${SRCDIR}

	mconfigure --disable-efiemu --disable-werror --disable-nls || die
	mmake || die
}

alx_generic_src_install()
{
	cd ${SRCDIR}

	mmake DESTDIR=${BINDIR} install || die

	# not required by pretty name patch anymore
	# set distribution
	#echo 'GRUB_DISTRIBUTOR="ALX Thinclient"' >> ${BINDIR}/usr/share/grub/grub-mkconfig_lib || die

	# install only grub dir, no default config
	minstalldir /boot/grub || die

	# remove debugging related files
	mdelete /usr/$(mlibdir)/grub/i386-pc/\*.module || die
	mdelete /usr/$(mlibdir)/grub/i386-pc/\*.image || die
	mdelete /usr/$(mlibdir)/grub/i386-pc/kernel.exec || die
	mdelete /usr/$(mlibdir)/grub/i386-pc/gdb_grub || die
	mdelete /usr/$(mlibdir)/grub/i386-pc/gmodule.pl || die

	# docs
	minstalldocs AUTHORS ChangeLog COPYING NEWS README THANKS TODO || die

	# setup a proper grub default conf
	minstalldir /etc/conf.d || die
	mcinjectfile grub.confd /etc/conf.d/grub || die
#	minstalldir /etc/conf.d/grub.d || die
#	mcinjectfile grub-alx.confd /etc/conf.d/grub.d/10-alx || die

#	# use custom creation scripts and delete the provided ones
#	echo -e ${COLGREEN}"    injecting custom grub-configs"${COLDEFAULT}
#	local i
#	for i in ${BINDIR}/etc/grub.d/10_linux \
#		${BINDIR}/etc/grub.d/20_linux_xen \
#		${BINDIR}/etc/grub.d/30_os-prober \
#		${BINDIR}/etc/grub.d/40_custom \
#		${BINDIR}/etc/grub.d/41_custom \
#		${BINDIR}/etc/grub.d/README
#	do
#		if [[ -f ${i} ]]
#		then
#			rm ${i} || die
#		fi
#	done
#	mcinjectexec 05_alx_header /etc/grub.d/ || die
#	mcinjectexec 10_alx /etc/grub.d/ || die

	# only keep 10_linux script
	for i in ${BINDIR}/etc/grub.d/20_linux_xen \
		${BINDIR}/etc/grub.d/30_os-prober \
		${BINDIR}/etc/grub.d/40_custom \
		${BINDIR}/etc/grub.d/41_custom \
		${BINDIR}/etc/grub.d/README
	do
		if [[ -f ${i} ]]
		then
			rm ${i} || die
		fi
	done
}

preinstall_grub()
{
	mount /boot &> /dev/null

	add_conf_prot_mask /etc/conf.d/grub /etc/grub.d /etc/conf.d/grub.d
}

postinstall_grub()
{
	[ ! -d ${MROOT}/boot/grub ] && install -d ${MROOT}/boot/grub

	# creates some essential links
	[ ! -e ${MROOT}/boot/boot ] && ln -sf . ${MROOT}/boot/boot

	# clean up old helpers, which are now consolidated to the '10_alx' script, and delete 10_alx too, we're using 10_linux now
	local i
	for i in 30_alx_hwdetect 40_alx_reset 10-alx
	do
		if [ -f ${MROOT}/etc/grub/${i} ]
		then
			rm ${MROOT}/etc/grub/${i}
		fi
	done
	if [ -f ${MROOT}/etc/conf.d/grub.conf.d/10-alx ]
	then
		rm ${MROOT}/etc/conf.d/grub.conf.d/10-alx
	fi

	if [[ -z ${MROOT} ]] || [[ ${MROOT} = / ]] && [[ ${MAGE_BOOTSTRAP} != true ]]
	then
		# create a device.map
		if [[ ! -f /boot/grub/device.map ]]
		then
			grub-mkdevicemap
		fi

		# needed by grub-mkconfig on the first run
		if [[ ! -f /boot/grub/video.lst ]]
		then
			install -m0644 /$(mlibdir)/grub/*/video.lst /boot/grub/video.lst
		fi

		# update grub.cfg
		LC_ALL=C grub-mkconfig -o /boot/grub/grub.cfg

		# install bootloader to disk
		#local bootpartition="$(df -h /boot |(read; awk '{print $1; exit}'))"
		local bootdisk
		bootdisk="$(grub-probe --target=drive /boot | sed 's:(\(.*\),.*):(\1):')"

		# Generate core.img, but don't let it be installed in boot sector
		grub-install --no-floppy "${bootdisk}"
	fi
}