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# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

EAPI=5

AUTOTOOLS_AUTORECONF=yes
AUTOTOOLS_IN_SOURCE_BUILD=yes

inherit autotools-utils flag-o-matic systemd toolchain-funcs
inherit git-r3

EGIT_REPO_URI="https://github.com/coreos/rkt.git"

KEYWORDS=""
PXE_VERSION="738.1.0"
EGIT_BRANCH="master"

PXE_URI="http://alpha.release.core-os.net/amd64-usr/${PXE_VERSION}/coreos_production_pxe_image.cpio.gz"
PXE_FILE="${PN}-pxe-${PXE_VERSION}.img"

SRC_URI="rkt_stage1_coreos? ( $PXE_URI -> $PXE_FILE )"

DESCRIPTION="A CLI for running app containers, and an implementation of the App
Container Spec."
HOMEPAGE="https://github.com/coreos/rkt"

LICENSE="Apache-2.0"
SLOT="0"
IUSE="doc examples +rkt_stage1_coreos rkt_stage1_host rkt_stage1_src +actool systemd"
REQUIRED_USE="^^ ( rkt_stage1_coreos rkt_stage1_host rkt_stage1_src )"

DEPEND=">=dev-lang/go-1.4.1
	app-arch/cpio
	app-crypt/trousers
	sys-fs/squashfs-tools
	dev-perl/Capture-Tiny
	rkt_stage1_src? (
		>=sys-apps/systemd-222
		app-shells/bash:0
	)"
RDEPEND="!app-emulation/rocket
	rkt_stage1_host? (
		>=sys-apps/systemd-222
		app-shells/bash:0
	)"

BUILDDIR="build-${P}"

src_configure() {
	local myeconfargs=(
		--with-stage1-image-path="/usr/share/rkt/stage1.aci"
	)

	if use rkt_stage1_host; then
		myeconfargs+=( --with-stage1="host" )
	elif use rkt_stage1_src; then
		myeconfargs+=( --with-stage1="src" )
	elif use rkt_stage1_coreos; then
		myeconfargs+=( --with-stage1="coreos" )
		mkdir -p "${BUILDDIR}/tmp/usr_from_coreos/" || die
		cp "${DISTDIR}/${PXE_FILE}" "${BUILDDIR}/tmp/usr_from_coreos/pxe.img" || die
	fi

	# Go's 6l linker does not support PIE, disable so cgo binaries
	# which use 6l+gcc for linking can be built correctly.
	if gcc-specs-pie; then
		append-ldflags -nopie
	fi

	export CC=$(tc-getCC)
	export CGO_ENABLED=1
	export CGO_CFLAGS="${CFLAGS}"
	export CGO_CPPFLAGS="${CPPFLAGS}"
	export CGO_CXXFLAGS="${CXXFLAGS}"
	export CGO_LDFLAGS="${LDFLAGS}"
	export BUILDDIR

	autotools-utils_src_configure
}

src_install() {
	dodoc README.md
	use doc && dodoc -r Documentation
	use examples && dodoc -r examples
	use actool && dobin "${S}/${BUILDDIR}/bin/actool"

	dobin "${S}/${BUILDDIR}/bin/rkt"

	insinto /usr/share/rkt/
	doins "${S}/${BUILDDIR}/bin/stage1.aci"

	systemd_dounit "${S}"/dist/init/systemd/${PN}-gc.service
	systemd_dounit "${S}"/dist/init/systemd/${PN}-gc.timer
	systemd_dounit "${S}"/dist/init/systemd/${PN}-metadata.service
	systemd_dounit "${S}"/dist/init/systemd/${PN}-metadata.socket
}