# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit mount-boot eutils flag-o-matic gnuconfig toolchain-funcs

DESCRIPTION="GNU GRUB boot loader"
HOMEPAGE="http://www.gnu.org/software/grub/"
SRC_URI="mirror://gentoo/${P}.tar.gz
	mirror://gentoo/${P}-splash.patch.bz2"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~x86 ~amd64"
IUSE="static netboot"

RDEPEND=">=sys-libs/ncurses-5.2-r5"
DEPEND="${RDEPEND}
	>=sys-devel/automake-1.8
	>=sys-devel/autoconf-2.5"
PROVIDE="virtual/bootloader"

pkg_setup() {
	has_m32 || die "your compiler seems to be unable to compile 32bit code. if you are on amd64, make sure you compile gcc with USE=multilib FEATURES=-sandbox"

	ABI_ALLOW="x86"
	ABI="x86"
}

src_unpack() {
	unpack ${A}
	cd ${S}

	epatch ${WORKDIR}/${P}-splash.patch

	# PIC patch by psm & kevin f. quinn
	epatch ${FILESDIR}/${P}-PIC2.patch

	# -fwritable-strings is deprecated
	epatch ${FILESDIR}/${P}-warnings.patch

	# disable tests for BSD file systems that always fail (bug #71811)
	epatch ${FILESDIR}/${P}-bounced-checks.patch

	# add i2o RAID support (patch from Christian Zoffoli)
	epatch ${FILESDIR}/${P}-i2o-raid.patch

	# gfxboot menu support
	epatch ${FILESDIR}/${P}-gfxboot.patch

	gnuconfig_update
}

src_compile() {
	# non-default block sizes can kill compilation (bug #73499)
	unset BLOCK_SIZE

	use static && append-ldflags -static

	einfo "Running aclocal.."; aclocal || die "aclocal failed"
	einfo "Running autoconf.."; autoconf || die "autoconf failed"
	einfo "Running automake.."; WANT_AUTOMAKE=1.8 automake || die "automake failed"

	# grub-0.95 got added -fno-stack-protector detection, to disable ssp for stage2
	# but the objcopy's (faulty) test fails if -fstack-protector is default
	# create a cache telling configure that objcopy is ok
	# added -C to econf to make use of the cache
	# CFLAGS has to be undefined running econf, else -fno-stack-protector detection fails
	# STAGE2_CFLAGS is not allowed to be used on emake command-line, it overwrites
	# -fno-stack-protector detected by configure, removed from netboot's emake
	has_ssp && echo "grub_cv_prog_objcopy_absolute=yes" > config.cache

	local myconf="--sbindir=/sbin --disable-auto-linux-mem-opt"

	# build the net-bootable grub first, but only if "netboot" is set
	if use netboot; then
		CFLAGS="" \
		econf -C ${myconf} \
		--enable-diskless \
		--enable-{3c{5{03,07,09,29,95},90x},cs89x0,davicom,depca,eepro{,100}} \
		--enable-{epic100,exos205,ni5210,lance,ne2100,ni{50,65}10,natsemi} \
		--enable-{ne,ns8390,wd,otulip,rtl8139,sis900,sk-g16,smc9000,tiara} \
		--enable-{tulip,via-rhine,w89c840} || die "netboot econf failed"

		emake w89c840_o_CFLAGS="-O" || die "making netboot"

		mv stage2/{nbgrub,pxegrub} ${S}
		mv stage2/stage2 stage2/stage2.netboot

		make clean || die "make clean failed"
	fi

	# Now build the regular grub
	# Note that FFS and UFS2 support are broken for now - stage1_5 files too big
	CFLAGS="" econf -C ${myconf} || die "econf failed"
	emake || die "making regular grub"
}

src_test() {
	# non-default block size also gives false pass/fails.
	unset BLOCK_SIZE

	make check || die "make check failed"
}

src_install() {
	make DESTDIR=${D} install || die
	exeinto /usr/lib/grub
	doexe stage2/stage2
	use netboot && doexe nbgrub pxegrub stage2/stage2.netboot

	insinto /boot/grub
	doins ${FILESDIR}/splash.xpm.gz
	newins docs/menu.lst grub.conf.sample

	dodoc AUTHORS BUGS COPYING ChangeLog NEWS README THANKS TODO
	newdoc docs/menu.lst grub.conf.sample
}

pkg_preinst() {
	mount-boot_pkg_preinst
}

pkg_postinst() {
	[[ "$ROOT" != "/" ]] && return 0

	# change menu.lst to grub.conf
	if [[ ! -e /boot/grub/grub.conf && -e /boot/grub/menu.lst ]]; then
		mv /boot/grub/menu.lst /boot/grub/grub.conf
		ewarn
		ewarn "*** IMPORTANT NOTE: menu.lst has been renamed to grub.conf"
		ewarn
	fi

	einfo "Linking grub.conf to menu.lst.."
	ln -sf grub.conf /boot/grub/menu.lst

	[[ -e /boot/grub/stage2 ]] && mv /boot/grub/stage2{,.old}

	einfo "Copying files to /boot/grub.."
	cp -p /usr/lib/grub/*/* /boot/grub > /dev/null 2>&1
	cp -p /usr/lib/grub/* /boot/grub > /dev/null 2>&1

	[[ -x /sbin/chpax ]] && /sbin/chpax -spme /sbin/grub ||:
	[[ -x /sbin/paxctl ]] && /sbin/paxctl -spme /sbin/grub

	# Not sure what this is exactly for, but "if it works, don't fix it".
	[[ -e /boot/grub/grub.conf ]] \
		&& /sbin/grub --batch --device-map=/boot/grub/device.map \
			 < /boot/grub/grub.conf > /dev/null 2>&1
}