--- /dev/null
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=5
+
+inherit autotools-utils linux-info udev user
+
+DESCRIPTION="Yubico Universal 2nd Factor (U2F) Host C Library"
+HOMEPAGE="https://developers.yubico.com/libu2f-host/"
+SRC_URI="https://developers.yubico.com/${PN}/Releases/${P}.tar.xz"
+
+LICENSE="LGPL-2"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="kernel_linux static-libs systemd"
+
+RDEPEND="
+ dev-libs/hidapi
+ dev-libs/json-c"
+DEPEND="${RDEPEND}
+ virtual/pkgconfig"
+RDEPEND="${RDEPEND}
+ systemd? ( sys-apps/systemd[acl] )"
+
+CONFIG_CHECK="~HIDRAW"
+
+pkg_setup() {
+ # The U2F device node will be owned by group 'plugdev'
+ # in non-systemd configurations
+ if ! use systemd; then
+ enewgroup plugdev
+ fi
+}
+
+src_prepare() {
+ autotools-utils_src_prepare
+
+ sed -e 's:TAG+="uaccess":MODE="0664", GROUP="plugdev":g' \
+ 70-u2f.rules > 70-u2f-udev.rules || die
+}
+
+src_configure() {
+ autotools-utils_src_configure
+}
+
+src_install() {
+ autotools-utils_src_install
+
+ if use kernel_linux; then
+ if use systemd; then
+ udev_dorules 70-u2f.rules
+ else
+ udev_newrules 70-u2f-udev.rules 70-u2f.rules
+ fi
+ fi
+}
+
+pkg_postinst() {
+ if ! use systemd; then
+ elog "Users must be a member of the 'plugdev' group"
+ elog "to be able to access U2F devices"
+ fi
+}