# Copyright 2003-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit bash-completion-r1 linux-info meson ninja-utils multilib-minimal toolchain-funcs udev usr-ldscript

if [[ ${PV} = 9999* ]]; then
	EGIT_REPO_URI="https://github.com/systemd/systemd.git"
	inherit git-r3
else
	if [[ ${PV} == *.* ]]; then
		MY_PN=systemd-stable
	else
		MY_PN=systemd
	fi
	MY_PV=${PV/_/-}
	MY_P=${MY_PN}-${MY_PV}
	S=${WORKDIR}/${MY_P}
	SRC_URI="https://github.com/systemd/${MY_PN}/archive/v${MY_PV}/${MY_P}.tar.gz"
	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sparc ~x86"
fi

DESCRIPTION="Linux dynamic and persistent device naming support (aka userspace devfs)"
HOMEPAGE="https://www.freedesktop.org/wiki/Software/systemd"

LICENSE="LGPL-2.1 MIT GPL-2"
SLOT="0"
IUSE="acl +kmod selinux static-libs"

RESTRICT="test"

BDEPEND="
	dev-util/gperf
	>=dev-util/intltool-0.50
	>=sys-apps/coreutils-8.16
	virtual/pkgconfig
	app-text/docbook-xml-dtd:4.2
	app-text/docbook-xml-dtd:4.5
	app-text/docbook-xsl-stylesheets
	dev-libs/libxslt
"
COMMON_DEPEND="
	>=sys-apps/util-linux-2.30[${MULTILIB_USEDEP}]
	sys-libs/libcap:0=[${MULTILIB_USEDEP}]
	acl? ( sys-apps/acl )
	kmod? ( >=sys-apps/kmod-15 )
	selinux? ( >=sys-libs/libselinux-2.1.9 )
"
DEPEND="${COMMON_DEPEND}
	>=sys-kernel/linux-headers-3.9
"
RDEPEND="${COMMON_DEPEND}
	acct-group/kmem
	acct-group/tty
	acct-group/audio
	acct-group/cdrom
	acct-group/dialout
	acct-group/disk
	acct-group/input
	acct-group/kvm
	acct-group/lp
	acct-group/render
	acct-group/tape
	acct-group/video
	!sys-apps/gentoo-systemd-integration
	!sys-apps/systemd
"
PDEPEND=">=sys-apps/hwids-20140304[udev]
	>=sys-fs/udev-init-scripts-34"

pkg_setup() {
	if [[ ${MERGE_TYPE} != buildonly ]]; then
		CONFIG_CHECK="~BLK_DEV_BSG ~DEVTMPFS ~!IDE ~INOTIFY_USER ~!SYSFS_DEPRECATED ~!SYSFS_DEPRECATED_V2 ~SIGNALFD ~EPOLL ~FHANDLE ~NET ~!FW_LOADER_USER_HELPER ~UNIX"
		linux-info_pkg_setup

		# CONFIG_FHANDLE was introduced by 2.6.39
		local MINKV=2.6.39

		if kernel_is -lt ${MINKV//./ }; then
			eerror "Your running kernel is too old to run this version of ${P}"
			eerror "You need to upgrade kernel at least to ${MINKV}"
		fi

		if kernel_is -lt 3 7; then
			ewarn "Your running kernel is too old to have firmware loader and"
			ewarn "this version of ${P} doesn't have userspace firmware loader"
			ewarn "If you need firmware support, you need to upgrade kernel at least to 3.7"
		fi
	fi
}

src_prepare() {
	cat <<-EOF > "${T}"/40-gentoo.rules
	# Gentoo specific floppy and usb groups
	ACTION=="add", SUBSYSTEM=="block", KERNEL=="fd[0-9]", GROUP="floppy"
	ACTION=="add", SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", GROUP="usb"
	EOF

	if [[ -d "${WORKDIR}/patches" ]]; then
		eapply "${WORKDIR}/patches"
	fi

	local PATCHES=(
	)

	default
}

meson_multilib_native_use() {
	if multilib_is_native_abi && use "$1"; then
		echo true
	else
		echo false
	fi
}

multilib_src_configure() {
	local emesonargs=(
		-Dacl=$(meson_multilib_native_use acl)
		-Defi=false
		-Dkmod=$(meson_multilib_native_use kmod)
		-Dselinux=$(meson_multilib_native_use selinux)
		-Dlink-udev-shared=false
		-Dsplit-usr=true
		-Drootlibdir="${EPREFIX}/usr/$(get_libdir)"
		-Dstatic-libudev=$(usex static-libs true false)

		# Prevent automagic deps
		-Dgcrypt=false
		-Dlibcryptsetup=false
		-Dlibidn=false
		-Dlibidn2=false
		-Dlibiptc=false
		-Dseccomp=false
		-Dlz4=false
		-Dxz=false
	)
	meson_src_configure
}

src_configure() {
	# Prevent conflicts with i686 cross toolchain, bug 559726
	tc-export AR CC NM OBJCOPY RANLIB
	multilib-minimal_src_configure
}

multilib_src_compile() {
	# meson creates this link
	local libudev=$(readlink src/udev/libudev.so.1)

	local targets=(
		src/udev/${libudev}
	)
	if use static-libs; then
		targets+=( src/udev/libudev.a )
	fi
	if multilib_is_native_abi; then
		targets+=(
			udevadm
			src/udev/ata_id
			src/udev/cdrom_id
			src/udev/fido_id
			src/udev/mtd_probe
			src/udev/scsi_id
			src/udev/v4l_id
			man/udev.conf.5
			man/systemd.link.5
			man/hwdb.7
			man/udev.7
			man/systemd-udevd.service.8
			man/udevadm.8
		)
	fi
	eninja "${targets[@]}"
}

multilib_src_install() {
	local libudev=$(readlink src/udev/libudev.so.1)

	dolib.so src/udev/{${libudev},libudev.so.1,libudev.so}
	gen_usr_ldscript -a udev
	use static-libs && dolib.a src/udev/libudev.a

	insinto "/usr/$(get_libdir)/pkgconfig"
	doins src/libudev/libudev.pc

	if multilib_is_native_abi; then
		into /
		dobin udevadm

		dosym ../../bin/udevadm /lib/systemd/systemd-udevd

		exeinto /lib/udev
		doexe src/udev/{ata_id,cdrom_id,fido_id,mtd_probe,scsi_id,v4l_id}

		rm rules.d/99-systemd.rules || die
		insinto /lib/udev/rules.d
		doins rules.d/*.rules

		insinto /usr/share/pkgconfig
		doins src/udev/udev.pc

		mv man/systemd-udevd.service.8 man/systemd-udevd.8 || die
		rm man/systemd-udevd-{control,kernel}.socket.8 || die
		doman man/*.[0-9]
	fi
}

multilib_src_install_all() {
	doheader src/libudev/libudev.h

	insinto /etc/udev
	doins src/udev/udev.conf
	keepdir /etc/udev/{hwdb.d,rules.d}

	insinto /lib/systemd/network
	doins network/99-default.link

	# see src_prepare() for content of 40-gentoo.rules
	insinto /lib/udev/rules.d
	doins "${T}"/40-gentoo.rules
	doins "${S}"/rules.d/*.rules

	dobashcomp shell-completion/bash/udevadm

	insinto /usr/share/zsh/site-functions
	doins shell-completion/zsh/_udevadm

	einstalldocs
}

pkg_postinst() {
	# Update hwdb database in case the format is changed by udev version.
	if has_version 'sys-apps/hwids[udev]'; then
		udevadm hwdb --update --root="${ROOT}"
		# Only reload when we are not upgrading to avoid potential race w/ incompatible hwdb.bin and the running udevd
		# https://cgit.freedesktop.org/systemd/systemd/commit/?id=1fab57c209035f7e66198343074e9cee06718bda
		[[ -z ${REPLACING_VERSIONS} ]] && udev_reload
	fi
}