sys-apps/kexec-tools: Sync with Gentoo

It's from Gentoo commit a4e0784787bbd9238f3478a6a33af7b5763f1c0a.

sdk_container/src/third_party/portage-stable/sys-apps/kexec-tools/Manifest

@@ -1,2 +1,3 @@
 DIST kexec-tools-2.0.28.tar.xz 312524 BLAKE2B b2ab25c632cd2bad21751940acee1816f9cd930e1bb5af1052f9f6c4979dcd62d82c487a88fa8015e3ce7c843de9f47a3f6ccf7efa9270b5f24c79ba30a82a91 SHA512 889a7bf1d26bb309e4ff7ce1c8dbcf48c01e47221ea3acf1c4ef2a98a652c496e31bddcdb627d3adebd85f7541d1fb9122c60e741e10b3726e31a9733cadc753
 DIST kexec-tools-2.0.29.tar.xz 314576 BLAKE2B 3cb94015d0bcd8ab13f25e23835758fc305093c4d1a81c590830ced852e61da66321617f04bda847e26c95ec44bd101eb235fa1d34f397e22ed4e80426efa162 SHA512 4c9e0b3df47b240f0eac2c31e8b515465f626ce043f64daa32b0b032d7132e54dada5d70875dab256345f66cf94a25dc3c160a9009ba60addd8dcb1e5205f5ca
+DIST kexec-tools-2.0.30.tar.xz 316548 BLAKE2B 06789dda9526e0d507f50861468baf674dc702eef015dee00b72946c72e78e8d11636db164c2f41c6dd8e5bd647b33a64d079ac624e0d45938b466a61f972e43 SHA512 4550607ad7eb51d169c2565cfee9195441634624d1c8859e21bca6bd7f15031713c39ba475301c1ef5fc67c009bc6599d254da184be25e68b226155e515e3852

sdk_container/src/third_party/portage-stable/sys-apps/kexec-tools/kexec-tools-2.0.29-r1.ebuild

@@ -11,7 +11,7 @@ if [[ ${PV} == "9999" ]] ; then
 else
 	SRC_URI="https://www.kernel.org/pub/linux/utils/kernel/kexec/${P/_/-}.tar.xz"
 	[[ "${PV}" == *_rc* ]] || \
-	KEYWORDS="amd64 ~arm64 ~ppc64 x86"
+	KEYWORDS="amd64 arm64 ~ppc64 x86"
 fi
 
 DESCRIPTION="Load another kernel from the currently executing Linux kernel"

sdk_container/src/third_party/portage-stable/sys-apps/kexec-tools/kexec-tools-2.0.30.ebuild

@@ -0,0 +1,98 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+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"
+	[[ "${PV}" == *_rc* ]] || \
+	KEYWORDS="amd64 arm64 ~ppc64 x86"
+fi
+
+DESCRIPTION="Load another kernel from the currently executing Linux kernel"
+HOMEPAGE="https://kernel.org/pub/linux/utils/kernel/kexec/"
+
+S="${WORKDIR}/${P/_/-}"
+
+LICENSE="GPL-2"
+SLOT="0"
+IUSE="booke lzma selinux xen zlib"
+
+REQUIRED_USE="lzma? ( zlib )"
+
+DEPEND="
+	lzma? ( app-arch/xz-utils )
+	zlib? ( sys-libs/zlib )
+"
+RDEPEND="
+	${DEPEND}
+	selinux? ( sec-policy/selinux-kdump )
+"
+
+CONFIG_CHECK="~KEXEC"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-2.0.4-disable-kexec-test.patch
+	"${FILESDIR}"/${PN}-2.0.4-out-of-source.patch
+)
+
+src_prepare() {
+	default
+
+	if [[ "${PV}" == 9999 ]] ; then
+		eautoreconf
+	else
+		elibtoolize
+	fi
+}
+
+src_configure() {
+	# GNU Make's $(COMPILE.S) passes ASFLAGS to $(CCAS), CCAS=$(CC)
+	export ASFLAGS="${CCASFLAGS}"
+
+	local myeconfargs=(
+		$(use_with booke)
+		$(use_with lzma)
+		$(use_with xen)
+		$(use_with zlib)
+	)
+	econf "${myeconfargs[@]}"
+}
+
+src_install() {
+	default
+
+	dodoc "${FILESDIR}"/README.Gentoo
+
+	newinitd "${FILESDIR}"/kexec-r2.init kexec
+
+	insinto /etc
+	doins "${FILESDIR}"/kexec.conf
+	dosym ../kexec.conf /etc/conf.d/kexec
+
+	dosbin "${FILESDIR}"/kexec-auto-load
+	systemd_newunit "${FILESDIR}"/kexec.service-r1 kexec.service
+}
+
+pkg_postinst() {
+	local n_root_args=$(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 [[ ${n_root_args} -gt 1 && "${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
+}

sdk_container/src/third_party/portage-stable/sys-apps/kexec-tools/kexec-tools-9999.ebuild

@@ -41,17 +41,9 @@ PATCHES=(
 	"${FILESDIR}"/${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
@@ -60,6 +52,9 @@ src_prepare() {
 }
 
 src_configure() {
+	# GNU Make's $(COMPILE.S) passes ASFLAGS to $(CCAS), CCAS=$(CC)
+	export ASFLAGS="${CCASFLAGS}"
+
 	local myeconfargs=(
 		$(use_with booke)
 		$(use_with lzma)
@@ -69,23 +64,6 @@ src_configure() {
 	econf "${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