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# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

# genkernel-9999        -> latest Git branch "master"
# genkernel-VERSION     -> normal genkernel release

EAPI=5 # approved 2012.09.11, required by all profiles since 2014.03.12

inherit bash-completion-r1 epatch estack

VERSION_BUSYBOX='1.30.1' # warning, be sure to bump patches
VERSION_DMRAID='1.0.0.rc16-3' # warning, be sure to bump patches
VERSION_LIBAIO='0.3.110' # warning, be sure to bump patches
VERSION_MDADM='4.1' # warning, be sure to bump patches
VERSION_FUSE='2.9.9' # warning, be sure to bump patches
VERSION_ISCSI='2.0.875' # warning, be sure to bump patches
VERSION_ISCSI_ISNS='0.99' # warning, be sure to bump patches
VERSION_LVM='2.02.183' # warning, be sure to bump patches
VERSION_UNIONFS_FUSE='2.0'
VERSION_GPG='1.4.23'

RH_HOME="ftp://sourceware.org/pub"
DM_HOME="https://people.redhat.com/~heinzm/sw/dmraid/src"
BB_HOME="https://busybox.net/downloads"

COMMON_URI="${DM_HOME}/dmraid-${VERSION_DMRAID}.tar.bz2
		${DM_HOME}/old/dmraid-${VERSION_DMRAID}.tar.bz2
		mirror://kernel/linux/utils/raid/mdadm/mdadm-${VERSION_MDADM}.tar.xz
		${RH_HOME}/lvm2/LVM2.${VERSION_LVM}.tgz
		${RH_HOME}/lvm2/old/LVM2.${VERSION_LVM}.tgz
		${BB_HOME}/busybox-${VERSION_BUSYBOX}.tar.bz2
		https://github.com/open-iscsi/open-iscsi/archive/${VERSION_ISCSI}.tar.gz -> open-isns-${VERSION_ISCSI}.tar.gz
		https://github.com/open-iscsi/open-isns/archive/v${VERSION_ISCSI_ISNS}.tar.gz -> open-isns-${VERSION_ISCSI_ISNS}.tar.gz
		https://github.com/libfuse/libfuse/releases/download/fuse-${VERSION_FUSE}/fuse-${VERSION_FUSE}.tar.gz
		mirror://debian/pool/main/liba/libaio/libaio_${VERSION_LIBAIO}.orig.tar.gz -> libaio-${VERSION_LIBAIO}.tar.gz
		https://github.com/rpodgorny/unionfs-fuse/archive/v${VERSION_UNIONFS_FUSE}.tar.gz -> unionfs-fuse-${VERSION_UNIONFS_FUSE}.tar.gz
		mirror://gnupg/gnupg/gnupg-${VERSION_GPG}.tar.bz2"

if [[ ${PV} == 9999* ]]
then
	EGIT_REPO_URI="https://anongit.gentoo.org/git/proj/${PN}.git"
	inherit git-r3
	S="${WORKDIR}/${P}"
	SRC_URI="${COMMON_URI}"
else
	SRC_URI="mirror://gentoo/${P}.tar.xz
		${COMMON_URI}"
	KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86"
fi

DESCRIPTION="Gentoo automatic kernel building scripts"
HOMEPAGE="https://www.gentoo.org"

LICENSE="GPL-2"
SLOT="0"
RESTRICT=""
IUSE="cryptsetup ibm +firmware selinux"

DEPEND="sys-fs/e2fsprogs
	selinux? ( sys-libs/libselinux )"
RDEPEND="${DEPEND}
	cryptsetup? ( sys-fs/cryptsetup )
	app-arch/cpio
	>=app-misc/pax-utils-1.2.2
	sys-apps/util-linux[static-libs(+)]
	firmware? ( sys-kernel/linux-firmware )
	!<sys-apps/openrc-0.9.9"
# pax-utils is used for lddtree

if [[ ${PV} == 9999* ]]; then
	DEPEND="${DEPEND} app-text/asciidoc"
fi

pkg_pretend() {
	if ! use cryptsetup && has_version "sys-kernel/genkernel[crypt]"; then
		ewarn "Local use flag 'crypt' has been renamed to 'cryptsetup' (bug #414523)."
		ewarn "Please set flag 'cryptsetup' for this very package if you would like"
		ewarn "to have genkernel create an initramfs with LUKS support."
		ewarn "Sorry for the inconvenience."
		echo
	fi
}

src_prepare() {
	if [[ ${PV} == 9999* ]] ; then
		einfo "Updating version tag"
		GK_V="$(git describe --tags | sed 's:^v::')-git"
		sed "/^GK_V/s,=.*,='${GK_V}',g" -i "${S}"/genkernel
		einfo "Producing ChangeLog from Git history..."
		pushd "${S}/.git" >/dev/null || die
		git log > "${S}"/ChangeLog || die
		popd >/dev/null || die
	fi
	if use selinux ; then
		sed -i 's/###//g' "${S}"/gen_compile.sh || die
	fi

	# Update software.sh
	sed -i \
		-e "s:VERSION_BUSYBOX:$VERSION_BUSYBOX:" \
		-e "s:VERSION_MDADM:$VERSION_MDADM:" \
		-e "s:VERSION_DMRAID:$VERSION_DMRAID:" \
		-e "s:VERSION_FUSE:$VERSION_FUSE:" \
		-e "s:VERSION_ISCSI_ISNS:$VERSION_ISCSI_ISNS:" \
		-e "s:VERSION_ISCSI:$VERSION_ISCSI:" \
		-e "s:VERSION_LIBAIO:$VERSION_LIBAIO:" \
		-e "s:VERSION_LVM:$VERSION_LVM:" \
		-e "s:VERSION_UNIONFS_FUSE:$VERSION_UNIONFS_FUSE:" \
		-e "s:VERSION_GPG:$VERSION_GPG:" \
		"${S}"/defaults/software.sh \
		|| die "Could not adjust versions"

	epatch_user
}

src_compile() {
	if [[ ${PV} == 9999* ]]; then
		emake
	fi
}

src_install() {
	insinto /etc
	doins "${S}"/genkernel.conf

	doman genkernel.8
	dodoc AUTHORS ChangeLog README TODO
	dobin genkernel
	rm -f genkernel genkernel.8 AUTHORS ChangeLog README TODO genkernel.conf

	if use ibm ; then
		cp "${S}"/arch/ppc64/kernel-2.6{-pSeries,} || die
	else
		cp "${S}"/arch/ppc64/kernel-2.6{.g5,} || die
	fi
	insinto /usr/share/genkernel
	doins -r "${S}"/*

	newbashcomp "${FILESDIR}"/genkernel.bash "${PN}"
	insinto /etc
	doins "${FILESDIR}"/initramfs.mounts

	cd "${DISTDIR}"
	insinto /usr/share/genkernel/distfiles
	doins ${A/${P}.tar.xz/}
}

pkg_postinst() {
	echo
	elog 'Documentation is available in the genkernel manual page'
	elog 'as well as the following URL:'
	echo
	elog 'https://wiki.gentoo.org/wiki/Genkernel'
	echo
	ewarn "This package is known to not work with reiser4.  If you are running"
	ewarn "reiser4 and have a problem, do not file a bug.  We know it does not"
	ewarn "work and we don't plan on fixing it since reiser4 is the one that is"
	ewarn "broken in this regard.  Try using a sane filesystem like ext4."
	echo
	ewarn "The LUKS support has changed from versions prior to 3.4.4.  Now,"
	ewarn "you use crypt_root=/dev/blah instead of real_root=luks:/dev/blah."
	echo
}