--- /dev/null
+# Copyright 1999-2019 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python2_7 )
+
+inherit flag-o-matic mount-boot multilib python-any-r1 toolchain-funcs
+
+MY_PV=${PV/_/-}
+MY_P=${PN}-${MY_PV}
+
+if [[ $PV == *9999 ]]; then
+ inherit git-r3
+ EGIT_REPO_URI="git://xenbits.xen.org/xen.git"
+ SRC_URI=""
+else
+ KEYWORDS="~amd64 ~arm -x86"
+ UPSTREAM_VER=2
+ SECURITY_VER=
+ GENTOO_VER=
+
+ [[ -n ${UPSTREAM_VER} ]] && \
+ UPSTREAM_PATCHSET_URI="https://dev.gentoo.org/~dlan/distfiles/${P}-upstream-patches-${UPSTREAM_VER}.tar.xz
+ https://github.com/hydrapolic/gentoo-dist/raw/master/xen/${P}-upstream-patches-${UPSTREAM_VER}.tar.xz"
+ [[ -n ${SECURITY_VER} ]] && \
+ SECURITY_PATCHSET_URI="https://dev.gentoo.org/~dlan/distfiles/${PN}-security-patches-${SECURITY_VER}.tar.xz"
+ [[ -n ${GENTOO_VER} ]] && \
+ GENTOO_PATCHSET_URI="https://dev.gentoo.org/~dlan/distfiles/${PN}-gentoo-patches-${GENTOO_VER}.tar.xz"
+ SRC_URI="https://downloads.xenproject.org/release/xen/${MY_PV}/${MY_P}.tar.gz
+ ${UPSTREAM_PATCHSET_URI}
+ ${SECURITY_PATCHSET_URI}
+ ${GENTOO_PATCHSET_URI}"
+fi
+
+DESCRIPTION="The Xen virtual machine monitor"
+HOMEPAGE="https://www.xenproject.org"
+LICENSE="GPL-2"
+SLOT="0"
+IUSE="debug efi flask"
+
+DEPEND="${PYTHON_DEPS}
+ efi? ( >=sys-devel/binutils-2.22[multitarget] )
+ !efi? ( >=sys-devel/binutils-2.22 )"
+RDEPEND=""
+PDEPEND="~app-emulation/xen-tools-${PV}"
+
+# no tests are available for the hypervisor
+# prevent the silliness of /usr/lib/debug/usr/lib/debug files
+# prevent stripping of the debug info from the /usr/lib/debug/xen-syms
+RESTRICT="test splitdebug strip"
+
+# Approved by QA team in bug #144032
+QA_WX_LOAD="boot/xen-syms-${PV}"
+
+REQUIRED_USE="arm? ( debug )"
+
+S="${WORKDIR}/${MY_P}"
+
+pkg_setup() {
+ python-any-r1_pkg_setup
+ if [[ -z ${XEN_TARGET_ARCH} ]]; then
+ if use amd64; then
+ export XEN_TARGET_ARCH="x86_64"
+ elif use arm; then
+ export XEN_TARGET_ARCH="arm32"
+ elif use arm64; then
+ export XEN_TARGET_ARCH="arm64"
+ else
+ die "Unsupported architecture!"
+ fi
+ fi
+
+ if use flask ; then
+ export "XSM_ENABLE=y"
+ export "FLASK_ENABLE=y"
+ fi
+}
+
+src_prepare() {
+ # Upstream's patchset
+ [[ -n ${UPSTREAM_VER} ]] && eapply "${WORKDIR}"/patches-upstream
+
+ # Security patchset
+ if [[ -n ${SECURITY_VER} ]]; then
+ einfo "Try to apply Xen Security patch set"
+ # apply main xen patches
+ # Two parallel systems, both work side by side
+ # Over time they may concdense into one. This will suffice for now
+ source "${WORKDIR}"/patches-security/${PV}.conf
+
+ local i
+ for i in ${XEN_SECURITY_MAIN}; do
+ eapply "${WORKDIR}"/patches-security/xen/$i
+ done
+ fi
+
+ # Gentoo's patchset
+ [[ -n ${GENTOO_VER} ]] && eapply "${WORKDIR}"/patches-gentoo
+
+ eapply "${FILESDIR}"/${PN}-4.6-efi.patch
+
+ # Drop .config
+ sed -e '/-include $(XEN_ROOT)\/.config/d' -i Config.mk || die "Couldn't drop"
+
+ if use efi; then
+ export EFI_VENDOR="gentoo"
+ export EFI_MOUNTPOINT="boot"
+ fi
+
+ default
+}
+
+src_configure() {
+ use arm && myopt="${myopt} CONFIG_EARLY_PRINTK=sun7i"
+
+ use debug && myopt="${myopt} debug=y"
+
+ # remove flags
+ unset CFLAGS
+ unset LDFLAGS
+ unset ASFLAGS
+}
+
+src_compile() {
+ # Send raw LDFLAGS so that --as-needed works
+ emake V=1 CC="$(tc-getCC)" LDFLAGS="$(raw-ldflags)" LD="$(tc-getLD)" -C xen ${myopt}
+}
+
+src_install() {
+ local myopt
+ use debug && myopt="${myopt} debug=y"
+
+ # The 'make install' doesn't 'mkdir -p' the subdirs
+ if use efi; then
+ mkdir -p "${D}"${EFI_MOUNTPOINT}/efi/${EFI_VENDOR} || die
+ fi
+
+ emake LDFLAGS="$(raw-ldflags)" DESTDIR="${D}" -C xen ${myopt} install
+
+ # make install likes to throw in some extra EFI bits if it built
+ use efi || rm -rf "${D}/usr/$(get_libdir)/efi"
+}
+
+pkg_postinst() {
+ elog "Official Xen Guide:"
+ elog " https://wiki.gentoo.org/wiki/Xen"
+
+ use efi && einfo "The efi executable is installed in boot/efi/gentoo"
+
+ elog "You can optionally block the installation of /boot/xen-syms by an entry"
+ elog "in folder /etc/portage/env using the portage's feature INSTALL_MASK"
+ elog "e.g. echo ${msg} > /etc/portage/env/xen.conf"
+}