sys-apps/kexec-tools: Sync with Gentoo

It's from Gentoo commit d44bf53760ae949cae90cce30472559493645f64.

sdk_container/src/third_party/portage-stable/sys-apps/kexec-tools/kexec-tools-2.0.23.ebuild

@@ -1,124 +0,0 @@
-# Copyright 1999-2021 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=7
-
-inherit libtool linux-info systemd
-
-if [[ ${PV} == "9999" ]] ; then
-	inherit git-r3 autotools
-	EGIT_REPO_URI="https://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git"
-else
-	SRC_URI="https://www.kernel.org/pub/linux/utils/kernel/kexec/${P/_/-}.tar.xz"
-	[[ "${PV}" == *_rc* ]] || \
-	KEYWORDS="~amd64 ~arm64 ~ppc64 ~x86"
-fi
-
-DESCRIPTION="Load another kernel from the currently executing Linux kernel"
-HOMEPAGE="https://kernel.org/pub/linux/utils/kernel/kexec/"
-
-LICENSE="GPL-2"
-SLOT="0"
-IUSE="booke lzma xen zlib"
-
-REQUIRED_USE="lzma? ( zlib )"
-
-DEPEND="
-	lzma? ( app-arch/xz-utils )
-	zlib? ( sys-libs/zlib )"
-RDEPEND="${DEPEND}"
-
-S="${WORKDIR}/${P/_/-}"
-
-CONFIG_CHECK="~KEXEC"
-
-PATCHES=(
-	"${FILESDIR}"/${PN}-2.0.4-disable-kexec-test.patch
-	"${FILESDIR}"/${PN}-2.0.4-out-of-source.patch
-)
-
-pkg_setup() {
-	# GNU Make's $(COMPILE.S) passes ASFLAGS to $(CCAS), CCAS=$(CC)
-	export ASFLAGS="${CCASFLAGS}"
-}
-
-src_prepare() {
-	default
-
-	# Append PURGATORY_EXTRA_CFLAGS flags set by configure, instead of overriding them completely.
-	sed -e "/^PURGATORY_EXTRA_CFLAGS =/s/=/+=/" -i Makefile.in || die
-
-	if [[ "${PV}" == 9999 ]] ; then
-		eautoreconf
-	else
-		elibtoolize
-	fi
-}
-
-src_configure() {
-	local myeconfargs=(
-		$(use_with booke)
-		$(use_with lzma)
-		$(use_with xen)
-		$(use_with zlib)
-	)
-	econf "${myeconfargs[@]}"
-}
-
-src_compile() {
-	# Respect CFLAGS for purgatory.
-	# purgatory/Makefile uses PURGATORY_EXTRA_CFLAGS variable.
-	# -mfunction-return=thunk and -mindirect-branch=thunk conflict with
-	# -mcmodel=large which is added by build system.
-	# Replace them with -mfunction-return=thunk-inline and -mindirect-branch=thunk-inline.
-	local flag flags=()
-	for flag in ${CFLAGS}; do
-		[[ ${flag} == -mfunction-return=thunk ]] && flag="-mfunction-return=thunk-inline"
-		[[ ${flag} == -mindirect-branch=thunk ]] && flag="-mindirect-branch=thunk-inline"
-		flags+=("${flag}")
-	done
-	local -x PURGATORY_EXTRA_CFLAGS="${flags[*]}"
-
-	default
-}
-
-src_install() {
-	default
-
-	dodoc "${FILESDIR}"/README.Gentoo
-
-	newinitd "${FILESDIR}"/kexec-r2.init kexec
-	newconfd "${FILESDIR}"/kexec.conf-2.0.4 kexec
-
-	insinto /etc
-	doins "${FILESDIR}"/kexec.conf
-
-	insinto /etc/kernel/postinst.d
-	doins "${FILESDIR}"/90_kexec
-
-	systemd_dounit "${FILESDIR}"/kexec.service
-}
-
-pkg_postinst() {
-	if systemd_is_booted || has_version sys-apps/systemd; then
-		elog "For systemd support the new config file is"
-		elog "   /etc/kexec.conf"
-		elog "Please adopt it to your needs as there is no autoconfig anymore"
-	fi
-
-	local n_root_args=$(grep -o -- '\<root=' /proc/cmdline 2>/dev/null | wc -l)
-	local has_rootpart_set=no
-	if [[ -f "${EROOT}/etc/conf.d/kexec" ]]; then
-		if grep -q -E -- '^ROOTPART=' "${EROOT}/etc/conf.d/kexec" 2>/dev/null; then
-			has_rootpart_set=yes
-		fi
-	fi
-
-	if [[ ${n_root_args} > 1 && "${has_rootpart_set}" == "no"  ]]; then
-		ewarn "WARNING: Multiple root arguments (root=) on kernel command-line detected!"
-		ewarn "This was probably caused by a previous version of ${PN}."
-		ewarn "Please reboot system once *without* kexec to avoid boot problems"
-		ewarn "in case running system and initramfs do not agree on detected"
-		ewarn "root device name!"
-	fi
-}