# $Id$

PNAME="grub"
PVER="0.97"
PBUILD="r15"

PCATEGORIE="sys-apps"
STATE="unstable"

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

DEPEND=">= sys-libs/ncurses-5.7"

SDEPEND=">= sys-dev/automake-4
	>= sys-dev/autoconf-5"

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

MCORE_ONLY_KEEP="boot/* usr/sbin usr/bin"
sminclude mtools mcore-split

SRC_URI=(
	ftp://alpha.gnu.org/gnu/${PNAME}/${SRCFILE}
	mirror://${PNAME}/${SRCFILE}
	mirror://${PNAME}/${PNAME}-${PVER}-splash.patch
	mirror://${PNAME}/${PNAME}-${PVER}-pic.patch
	mirror://${PNAME}/${PNAME}-${PVER}-initrdmax.patch
	mirror://${PNAME}/${PNAME}-${PVER}-nxstack.patch
	mirror://${PNAME}/${PNAME}-${PVER}-unsigned-addresses.patch
	mirror://${PNAME}/${PNAME}-${PVER}-ext4-3.patch
	mirror://${PNAME}/${PNAME}-${PVER}-virtio-blk-support-2.patch
)

# get only 0.xx versions!
UP2DATE="updatecmd ftp://alpha.gnu.org/gnu/${PNAME} | grep -- -0.[0-9].* | lasttarball 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}

	# splash support
	mpatch ${PNAME}-${PVER}-splash.patch || die

	# fix pic issues
	mpatch ${PNAME}-${PVER}-pic.patch || die

	# do not check initrdmax -> we are using more than 4mb
	mpatch ${PNAME}-${PVER}-initrdmax.patch || die

	# fix nx issues on x86_64
	mpatch ${PNAME}-${PVER}-nxstack.patch || die

	# fix issues on systems with more than 2gb of ram
	mpatch ${PNAME}-${PVER}-unsigned-addresses.patch || die

	# disabled atm, - broken, needs rework
	# support booting from ext4 filesystems
	#mpatch ${PNAME}-${PVER}-ext4-3.patch || die

	# handle virtio_blk device names in grub-install
	mpatch ${PNAME}-${PVER}-virtio-blk-support-2.patch || die

	# rebuild makefiles
	autoreconf --install --force || die
}

src_compile()
{
	cd ${SRCDIR}

	# fixes compilation on x86_64; grub cannot build natively on 64bit
	# building a static grub, with -m32 in this case
	if [[ ${ARCH} = x86_64 ]]
	then
		export CC="gcc -m32"
		export LDFLAGS="-static"
	fi

	mconfigure || die
	mmake || die
}

src_install()
{
	cd ${SRCDIR}

	# needed directories
	minstalldir /boot/grub || die

	mmake DESTDIR=${BINDIR} install || die

	# stage file locations have changed to /usr/lib
	# now copying all stage files
	for i in ${BINDIR}/usr/$(mlibdir)/grub/*/*
	do
		[ -f ${i} ] && cp -p ${i} ${BINDIR}/boot/grub || die ${i}
	done
}

preinstall()
{
	mount /boot &> /dev/null
}

postinstall()
{
	# creates some essential links
	if [ ! -e ${MROOT}/boot/boot ]
	then
		ln -sf . ${MROOT}/boot/boot
	fi

	if [ ! -e ${MROOT}/boot/grub/menu.lst ]
	then
		ln -sf /boot/grub/grub.conf ${MROOT}/boot/grub/menu.lst
	fi

	# creates example grub.conf
	if [ ! -e ${MROOT}/boot/grub/grub.conf.example ]
	then
		cat > ${MROOT}/boot/grub/grub.conf.example << "EOF"
default 0
timeout 30

title Magellan-Linux
root (hd0,0)
kernel (hd0,0)/boot/bzImage root=/dev/hda1
EOF
	fi

	# update grub
	grub --batch --device-map=/boot/grub/device.map </boot/grub/grub.conf >&/dev/null;
}