gentoo auto-resync : 23:08:2023 - 15:49:20

15 files changed, 2681 insertions, 0 deletions

diff --git a/sys-libs/Manifest.gz b/sys-libs/Manifest.gz
index 7774c669f0de..30935c16f23f 100644
--- a/sys-libs/Manifest.gz
+++ b/sys-libs/Manifest.gz
diff --git a/sys-libs/compiler-rt-sanitizers/Manifest b/sys-libs/compiler-rt-sanitizers/Manifest
index 4898c67409d3..60acf44f653b 100644
--- a/sys-libs/compiler-rt-sanitizers/Manifest
+++ b/sys-libs/compiler-rt-sanitizers/Manifest
@@ -10,6 +10,8 @@ DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd2
 DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-17.0.0rc2.src.tar.xz 127795160 BLAKE2B 58ed818f61e1cd179288d578e89460782617a3791a65dbc3e1f207629004f0d61225e87b78fdc0eeb3647912e5056ab68ce35ea2639a34ded1d8bdf0452e31f8 SHA512 7eb5c5172b5e9af65c940c876779f90e20a02659bf1489cedd06c67eea205aa1f4bdc5a8134a120db98cb80ca54673902b530c3315c9b53384c091200d9162c0
 DIST llvm-project-17.0.0rc2.src.tar.xz.sig 438 BLAKE2B 55788eacc592729839dad581b507794f279d84cafcaa49785ae34e02931ee9d4f64caf9e251e280dbc8676f3cacdca52a22f36cf7282655a3fc0721a61c9f003 SHA512 141e1ba7eb9870c21b91060ca484316cc8a402d4e61c8312688023850070b255b0eebe2d10ef63925f7269ee1b347074440e1a9a18d37cb7e1b6c82a7d1a1710
+DIST llvm-project-17.0.0rc3.src.tar.xz 127805656 BLAKE2B ecaead9f227b8357a5dc5ff21554d9b4f5aa036df1b88676fd8c3e16b438381db062872be396af5246e12cd71812a886016e0331a272dafc3508ecd0bfbb50ed SHA512 5f48b4af2e4f9bc470fcfd42fd48072b7bd442bc676d8401b04fbc6e9014a9a78e1bf524ba78f7ae8a1246222a6b03ca662721e3bf6e9eb03a015dd3306c7234
+DIST llvm-project-17.0.0rc3.src.tar.xz.sig 438 BLAKE2B 7b644cf501d17a6aef9b052e359ba06c1840a75e5263de46d938dbbdea07720b53d7ee6b5861ad641d0f7a7f75c6cc17717847b0ea9cf08873dbfacbe1c19074 SHA512 7059b1a90b7dd8cfa831f9e199a3a817358fd75d7c7d7e6de446d5443fce5831877a28e9b964ea238c1d803f9054bf4f53a97622d5f756f7f99aaa1c1a279f44
 DIST llvm-project-7d259b36d2e8148d13087844e6494ad3a5c63edf.tar.gz 195942450 BLAKE2B 3221cc070295edf4f70e5b24ed06cda29e8dd98d3d28ba5ac38b821fc313f7f7dfdc7ad500537c2244af0fa3d750174dfa1699db7f72a44df67e5fa255a3d0aa SHA512 9279290ab482f29af4a2205270038f1817608a63872e03340d43c31fcf5da36191269838912a1460455a8661295e664891d6d123018b12ddc80c2641790d0640
 DIST llvm-project-c4bb3e073548cf436d5fa0406e3ae75e94684dec.tar.gz 195462091 BLAKE2B 982f1105db6cf63575916a20432df4c8623bdff236ce3bd95e63ffd931bc8e1f0e9ea9ad673b09d749c35c1bfe68a48f5b4080118f25040498db09a580db3a7e SHA512 1c591175f44da85eb5ee831220c0387a3d9a0604beaf7abd89fbc6d1e0e9c4f80dac73de1dc22375a45115dd4c1d764fed0a0f628993ca780eb6991682aa0b5b
 DIST llvm-project-fe42682e7818d44cbe19f98ef34caa4e414aa937.tar.gz 196564445 BLAKE2B 056e6622b38009e34392c1d1755086e008bc85e9b4c00126e7ca92ddaee2ede7f31bafbc6ca04c5008983ce843d19fb152d75ce01e6ece4c2d891cc38604532c SHA512 8245f8a50f77e9ac9c0309a0025fde8407bb82d82277e3edba0a995debff50940e9500d4ad65060a330e6c19e2e1332d700ea040ca382ef4b75282a4566cbf72
@@ -19,6 +21,7 @@ EBUILD compiler-rt-sanitizers-16.0.6.ebuild 6546 BLAKE2B a57ff221344f88afa92722a
 EBUILD compiler-rt-sanitizers-17.0.0.9999.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
 EBUILD compiler-rt-sanitizers-17.0.0_rc1.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
 EBUILD compiler-rt-sanitizers-17.0.0_rc2.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
+EBUILD compiler-rt-sanitizers-17.0.0_rc3.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
 EBUILD compiler-rt-sanitizers-18.0.0.9999.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
 EBUILD compiler-rt-sanitizers-18.0.0_pre20230803.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
 EBUILD compiler-rt-sanitizers-18.0.0_pre20230810.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
diff --git a/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-17.0.0_rc3.ebuild b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-17.0.0_rc3.ebuild
new file mode 100644
index 000000000000..b0a49349926b
--- /dev/null
+++ b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-17.0.0_rc3.ebuild
@@ -0,0 +1,216 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+inherit check-reqs cmake flag-o-matic llvm llvm.org python-any-r1
+
+DESCRIPTION="Compiler runtime libraries for clang (sanitizers & xray)"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="${LLVM_MAJOR}"
+KEYWORDS=""
+IUSE="+abi_x86_32 abi_x86_64 +clang +debug test"
+# base targets
+IUSE+=" +libfuzzer +memprof +orc +profile +xray"
+# sanitizer targets, keep in sync with config-ix.cmake
+# NB: ubsan, scudo deliberately match two entries
+SANITIZER_FLAGS=(
+	asan dfsan lsan msan hwasan tsan ubsan safestack cfi scudo
+	shadowcallstack gwp-asan
+)
+IUSE+=" ${SANITIZER_FLAGS[@]/#/+}"
+REQUIRED_USE="
+	|| ( ${SANITIZER_FLAGS[*]} libfuzzer orc profile xray )
+	test? (
+		cfi? ( ubsan )
+		gwp-asan? ( scudo )
+	)
+"
+RESTRICT="
+	!clang? ( test )
+	!test? ( test )
+"
+
+DEPEND="
+	sys-devel/llvm:${LLVM_MAJOR}
+	virtual/libcrypt[abi_x86_32(-)?,abi_x86_64(-)?]
+"
+BDEPEND="
+	>=dev-util/cmake-3.16
+	clang? ( sys-devel/clang )
+	elibc_glibc? ( net-libs/libtirpc )
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=sys-devel/clang-${LLVM_VERSION}*:${LLVM_MAJOR}
+		sys-libs/compiler-rt:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake )
+LLVM_TEST_COMPONENTS=( llvm/lib/Testing/Support third-party )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${PYTHON_USEDEP}]"
+}
+
+check_space() {
+	if use test; then
+		local CHECKREQS_DISK_BUILD=11G
+		check-reqs_pkg_pretend
+	fi
+}
+
+pkg_pretend() {
+	check_space
+}
+
+pkg_setup() {
+	check_space
+	LLVM_MAX_SLOT=${LLVM_MAJOR} llvm_pkg_setup
+	python-any-r1_pkg_setup
+}
+
+src_prepare() {
+	sed -i -e 's:-Werror::' lib/tsan/go/buildgo.sh || die
+
+	local flag
+	for flag in "${SANITIZER_FLAGS[@]}"; do
+		if ! use "${flag}"; then
+			local cmake_flag=${flag/-/_}
+			sed -i -e "/COMPILER_RT_HAS_${cmake_flag^^}/s:TRUE:FALSE:" \
+				cmake/config-ix.cmake || die
+		fi
+	done
+
+	# TODO: fix these tests to be skipped upstream
+	if use asan && ! use profile; then
+		rm test/asan/TestCases/asan_and_llvm_coverage_test.cpp || die
+	fi
+	if use ubsan && ! use cfi; then
+		> test/cfi/CMakeLists.txt || die
+	fi
+
+	llvm.org_src_prepare
+}
+
+src_configure() {
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	# pre-set since we need to pass it to cmake
+	BUILD_DIR=${WORKDIR}/compiler-rt_build
+
+	if use clang; then
+		local -x CC=${CHOST}-clang
+		local -x CXX=${CHOST}-clang++
+		strip-unsupported-flags
+	fi
+
+	local flag want_sanitizer=OFF
+	for flag in "${SANITIZER_FLAGS[@]}"; do
+		if use "${flag}"; then
+			want_sanitizer=ON
+			break
+		fi
+	done
+
+	local mycmakeargs=(
+		-DCOMPILER_RT_INSTALL_PATH="${EPREFIX}/usr/lib/clang/${LLVM_MAJOR}"
+		# use a build dir structure consistent with install
+		# this makes it possible to easily deploy test-friendly clang
+		-DCOMPILER_RT_OUTPUT_DIR="${BUILD_DIR}/lib/clang/${LLVM_MAJOR}"
+
+		-DCOMPILER_RT_INCLUDE_TESTS=$(usex test)
+		# builtins & crt installed by sys-libs/compiler-rt
+		-DCOMPILER_RT_BUILD_BUILTINS=OFF
+		-DCOMPILER_RT_BUILD_CRT=OFF
+		-DCOMPILER_RT_BUILD_LIBFUZZER=$(usex libfuzzer)
+		-DCOMPILER_RT_BUILD_MEMPROF=$(usex memprof)
+		-DCOMPILER_RT_BUILD_ORC=$(usex orc)
+		-DCOMPILER_RT_BUILD_PROFILE=$(usex profile)
+		-DCOMPILER_RT_BUILD_SANITIZERS="${want_sanitizer}"
+		-DCOMPILER_RT_BUILD_XRAY=$(usex xray)
+
+		-DPython3_EXECUTABLE="${PYTHON}"
+	)
+
+	if use amd64; then
+		mycmakeargs+=(
+			-DCAN_TARGET_i386=$(usex abi_x86_32)
+			-DCAN_TARGET_x86_64=$(usex abi_x86_64)
+		)
+	fi
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+
+			# they are created during src_test()
+			-DCOMPILER_RT_TEST_COMPILER="${BUILD_DIR}/lib/llvm/${LLVM_MAJOR}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${BUILD_DIR}/lib/llvm/${LLVM_MAJOR}/bin/clang++"
+		)
+
+		# same flags are passed for build & tests, so we need to strip
+		# them down to a subset supported by clang
+		CC=${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang \
+		CXX=${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang++ \
+		strip-unsupported-flags
+	fi
+
+	if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
+		mycmakeargs+=(
+			# setting -isysroot is disabled with compiler-rt-prefix-paths.patch
+			# this allows adding arm64 support using SDK in EPREFIX
+			-DDARWIN_macosx_CACHED_SYSROOT="${EPREFIX}/MacOSX.sdk"
+			# Set version based on the SDK in EPREFIX
+			# This disables i386 for SDK >= 10.15
+			# Will error if has_use tsan and SDK < 10.12
+			-DDARWIN_macosx_OVERRIDE_SDK_VERSION="$(realpath ${EPREFIX}/MacOSX.sdk | sed -e 's/.*MacOSX\(.*\)\.sdk/\1/')"
+			# Use our libtool instead of looking it up with xcrun
+			-DCMAKE_LIBTOOL="${EPREFIX}/usr/bin/${CHOST}-libtool"
+		)
+	fi
+
+	cmake_src_configure
+
+	if use test; then
+		local sys_dir=( "${EPREFIX}"/usr/lib/clang/${LLVM_MAJOR}/lib/* )
+		[[ -e ${sys_dir} ]] || die "Unable to find ${sys_dir}"
+		[[ ${#sys_dir[@]} -eq 1 ]] || die "Non-deterministic compiler-rt install: ${sys_dir[*]}"
+
+		# copy clang over since resource_dir is located relatively to binary
+		# therefore, we can put our new libraries in it
+		mkdir -p "${BUILD_DIR}"/lib/{llvm/${LLVM_MAJOR}/{bin,$(get_libdir)},clang/${LLVM_MAJOR}/include} || die
+		cp "${EPREFIX}"/usr/lib/llvm/${LLVM_MAJOR}/bin/clang{,++} \
+			"${BUILD_DIR}"/lib/llvm/${LLVM_MAJOR}/bin/ || die
+		cp "${EPREFIX}"/usr/lib/clang/${LLVM_MAJOR}/include/*.h \
+			"${BUILD_DIR}"/lib/clang/${LLVM_MAJOR}/include/ || die
+		cp "${sys_dir}"/*builtins*.a \
+			"${BUILD_DIR}/lib/clang/${LLVM_MAJOR}/lib/${sys_dir##*/}/" || die
+		# we also need LLVMgold.so for gold-based tests
+		if [[ -f ${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/$(get_libdir)/LLVMgold.so ]]; then
+			ln -s "${EPREFIX}"/usr/lib/llvm/${LLVM_MAJOR}/$(get_libdir)/LLVMgold.so \
+				"${BUILD_DIR}"/lib/llvm/${LLVM_MAJOR}/$(get_libdir)/ || die
+		fi
+	fi
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+	# disable sandbox to have it stop clobbering LD_PRELOAD
+	local -x SANDBOX_ON=0
+	# wipe LD_PRELOAD to make ASAN happy
+	local -x LD_PRELOAD=
+
+	cmake_build check-all
+}
diff --git a/sys-libs/compiler-rt/Manifest b/sys-libs/compiler-rt/Manifest
index 183eaacf2be9..823c50a7a8ee 100644
--- a/sys-libs/compiler-rt/Manifest
+++ b/sys-libs/compiler-rt/Manifest
@@ -10,6 +10,8 @@ DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd2
 DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-17.0.0rc2.src.tar.xz 127795160 BLAKE2B 58ed818f61e1cd179288d578e89460782617a3791a65dbc3e1f207629004f0d61225e87b78fdc0eeb3647912e5056ab68ce35ea2639a34ded1d8bdf0452e31f8 SHA512 7eb5c5172b5e9af65c940c876779f90e20a02659bf1489cedd06c67eea205aa1f4bdc5a8134a120db98cb80ca54673902b530c3315c9b53384c091200d9162c0
 DIST llvm-project-17.0.0rc2.src.tar.xz.sig 438 BLAKE2B 55788eacc592729839dad581b507794f279d84cafcaa49785ae34e02931ee9d4f64caf9e251e280dbc8676f3cacdca52a22f36cf7282655a3fc0721a61c9f003 SHA512 141e1ba7eb9870c21b91060ca484316cc8a402d4e61c8312688023850070b255b0eebe2d10ef63925f7269ee1b347074440e1a9a18d37cb7e1b6c82a7d1a1710
+DIST llvm-project-17.0.0rc3.src.tar.xz 127805656 BLAKE2B ecaead9f227b8357a5dc5ff21554d9b4f5aa036df1b88676fd8c3e16b438381db062872be396af5246e12cd71812a886016e0331a272dafc3508ecd0bfbb50ed SHA512 5f48b4af2e4f9bc470fcfd42fd48072b7bd442bc676d8401b04fbc6e9014a9a78e1bf524ba78f7ae8a1246222a6b03ca662721e3bf6e9eb03a015dd3306c7234
+DIST llvm-project-17.0.0rc3.src.tar.xz.sig 438 BLAKE2B 7b644cf501d17a6aef9b052e359ba06c1840a75e5263de46d938dbbdea07720b53d7ee6b5861ad641d0f7a7f75c6cc17717847b0ea9cf08873dbfacbe1c19074 SHA512 7059b1a90b7dd8cfa831f9e199a3a817358fd75d7c7d7e6de446d5443fce5831877a28e9b964ea238c1d803f9054bf4f53a97622d5f756f7f99aaa1c1a279f44
 DIST llvm-project-7d259b36d2e8148d13087844e6494ad3a5c63edf.tar.gz 195942450 BLAKE2B 3221cc070295edf4f70e5b24ed06cda29e8dd98d3d28ba5ac38b821fc313f7f7dfdc7ad500537c2244af0fa3d750174dfa1699db7f72a44df67e5fa255a3d0aa SHA512 9279290ab482f29af4a2205270038f1817608a63872e03340d43c31fcf5da36191269838912a1460455a8661295e664891d6d123018b12ddc80c2641790d0640
 DIST llvm-project-c4bb3e073548cf436d5fa0406e3ae75e94684dec.tar.gz 195462091 BLAKE2B 982f1105db6cf63575916a20432df4c8623bdff236ce3bd95e63ffd931bc8e1f0e9ea9ad673b09d749c35c1bfe68a48f5b4080118f25040498db09a580db3a7e SHA512 1c591175f44da85eb5ee831220c0387a3d9a0604beaf7abd89fbc6d1e0e9c4f80dac73de1dc22375a45115dd4c1d764fed0a0f628993ca780eb6991682aa0b5b
 DIST llvm-project-fe42682e7818d44cbe19f98ef34caa4e414aa937.tar.gz 196564445 BLAKE2B 056e6622b38009e34392c1d1755086e008bc85e9b4c00126e7ca92ddaee2ede7f31bafbc6ca04c5008983ce843d19fb152d75ce01e6ece4c2d891cc38604532c SHA512 8245f8a50f77e9ac9c0309a0025fde8407bb82d82277e3edba0a995debff50940e9500d4ad65060a330e6c19e2e1332d700ea040ca382ef4b75282a4566cbf72
@@ -19,6 +21,7 @@ EBUILD compiler-rt-16.0.6.ebuild 5208 BLAKE2B afc59515558ee4dcc0f7e0eebe8b281e43
 EBUILD compiler-rt-17.0.0.9999.ebuild 5135 BLAKE2B 9ac6c4ba7e405d74a3cd74f42aa67c50164c3d721e4842ae0453a9f6eb1085fbe36ab806d1412378d8ffa6592ccd4e6617e34fb31c7e372a1af4ed9a2599df4e SHA512 78044bd66f2ca8bd49fac61dc579f7989797fcf6d341b179f245f19e57602d4efd4e0448ccb4734f31aad1226aba4a29eb1f27e19176b35ea789e9b9f0cb5d91
 EBUILD compiler-rt-17.0.0_rc1.ebuild 5135 BLAKE2B 9ac6c4ba7e405d74a3cd74f42aa67c50164c3d721e4842ae0453a9f6eb1085fbe36ab806d1412378d8ffa6592ccd4e6617e34fb31c7e372a1af4ed9a2599df4e SHA512 78044bd66f2ca8bd49fac61dc579f7989797fcf6d341b179f245f19e57602d4efd4e0448ccb4734f31aad1226aba4a29eb1f27e19176b35ea789e9b9f0cb5d91
 EBUILD compiler-rt-17.0.0_rc2.ebuild 5135 BLAKE2B 9ac6c4ba7e405d74a3cd74f42aa67c50164c3d721e4842ae0453a9f6eb1085fbe36ab806d1412378d8ffa6592ccd4e6617e34fb31c7e372a1af4ed9a2599df4e SHA512 78044bd66f2ca8bd49fac61dc579f7989797fcf6d341b179f245f19e57602d4efd4e0448ccb4734f31aad1226aba4a29eb1f27e19176b35ea789e9b9f0cb5d91
+EBUILD compiler-rt-17.0.0_rc3.ebuild 5135 BLAKE2B 9ac6c4ba7e405d74a3cd74f42aa67c50164c3d721e4842ae0453a9f6eb1085fbe36ab806d1412378d8ffa6592ccd4e6617e34fb31c7e372a1af4ed9a2599df4e SHA512 78044bd66f2ca8bd49fac61dc579f7989797fcf6d341b179f245f19e57602d4efd4e0448ccb4734f31aad1226aba4a29eb1f27e19176b35ea789e9b9f0cb5d91
 EBUILD compiler-rt-18.0.0.9999.ebuild 5135 BLAKE2B 9ac6c4ba7e405d74a3cd74f42aa67c50164c3d721e4842ae0453a9f6eb1085fbe36ab806d1412378d8ffa6592ccd4e6617e34fb31c7e372a1af4ed9a2599df4e SHA512 78044bd66f2ca8bd49fac61dc579f7989797fcf6d341b179f245f19e57602d4efd4e0448ccb4734f31aad1226aba4a29eb1f27e19176b35ea789e9b9f0cb5d91
 EBUILD compiler-rt-18.0.0_pre20230803.ebuild 5135 BLAKE2B 9ac6c4ba7e405d74a3cd74f42aa67c50164c3d721e4842ae0453a9f6eb1085fbe36ab806d1412378d8ffa6592ccd4e6617e34fb31c7e372a1af4ed9a2599df4e SHA512 78044bd66f2ca8bd49fac61dc579f7989797fcf6d341b179f245f19e57602d4efd4e0448ccb4734f31aad1226aba4a29eb1f27e19176b35ea789e9b9f0cb5d91
 EBUILD compiler-rt-18.0.0_pre20230810.ebuild 5135 BLAKE2B 9ac6c4ba7e405d74a3cd74f42aa67c50164c3d721e4842ae0453a9f6eb1085fbe36ab806d1412378d8ffa6592ccd4e6617e34fb31c7e372a1af4ed9a2599df4e SHA512 78044bd66f2ca8bd49fac61dc579f7989797fcf6d341b179f245f19e57602d4efd4e0448ccb4734f31aad1226aba4a29eb1f27e19176b35ea789e9b9f0cb5d91
diff --git a/sys-libs/compiler-rt/compiler-rt-17.0.0_rc3.ebuild b/sys-libs/compiler-rt/compiler-rt-17.0.0_rc3.ebuild
new file mode 100644
index 000000000000..f5ece0834a5e
--- /dev/null
+++ b/sys-libs/compiler-rt/compiler-rt-17.0.0_rc3.ebuild
@@ -0,0 +1,177 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+inherit cmake crossdev flag-o-matic llvm llvm.org python-any-r1 toolchain-funcs
+
+DESCRIPTION="Compiler runtime library for clang (built-in part)"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="${LLVM_MAJOR}"
+KEYWORDS=""
+IUSE="+abi_x86_32 abi_x86_64 +clang +debug test"
+RESTRICT="!test? ( test ) !clang? ( test )"
+
+DEPEND="
+	sys-devel/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	>=dev-util/cmake-3.16
+	clang? ( sys-devel/clang )
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=sys-devel/clang-${LLVM_VERSION}*:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${PYTHON_USEDEP}]"
+}
+
+pkg_pretend() {
+	if ! use clang && ! tc-is-clang; then
+		ewarn "Building using a compiler other than clang may result in broken atomics"
+		ewarn "library. Enable USE=clang unless you have a very good reason not to."
+	fi
+}
+
+pkg_setup() {
+	# Darwin Prefix builds do not have llvm installed yet, so rely on
+	# bootstrap-prefix to set the appropriate path vars to LLVM instead
+	# of using llvm_pkg_setup.
+	if [[ ${CHOST} != *-darwin* ]] || has_version sys-devel/llvm; then
+		LLVM_MAX_SLOT=${LLVM_MAJOR} llvm_pkg_setup
+	fi
+
+	if target_is_not_host || tc-is-cross-compiler ; then
+		# strips vars like CFLAGS="-march=x86_64-v3" for non-x86 architectures
+		CHOST=${CTARGET} strip-unsupported-flags
+		# overrides host docs otherwise
+		DOCS=()
+	fi
+	python-any-r1_pkg_setup
+}
+
+test_compiler() {
+	target_is_not_host && return
+	$(tc-getCC) ${CFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+src_configure() {
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	# pre-set since we need to pass it to cmake
+	BUILD_DIR=${WORKDIR}/${P}_build
+
+	if use clang && ! is_crosspkg; then
+		# Only do this conditionally to allow overriding with
+		# e.g. CC=clang-13 in case of breakage
+		if ! tc-is-clang ; then
+			local -x CC=${CHOST}-clang
+			local -x CXX=${CHOST}-clang++
+		fi
+
+		strip-unsupported-flags
+	fi
+
+	if ! is_crosspkg && ! test_compiler ; then
+		local nolib_flags=( -nodefaultlibs -lc )
+
+		if test_compiler "${nolib_flags[@]}"; then
+			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
+			ewarn "${CC} seems to lack runtime, trying with ${nolib_flags[*]}"
+		elif test_compiler "${nolib_flags[@]}" -nostartfiles; then
+			# Avoiding -nostartfiles earlier on for bug #862540,
+			# and set available entry symbol for bug #862798.
+			nolib_flags+=( -nostartfiles -emain )
+
+			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
+			ewarn "${CC} seems to lack runtime, trying with ${nolib_flags[*]}"
+		fi
+	fi
+
+	local mycmakeargs=(
+		-DCOMPILER_RT_INSTALL_PATH="${EPREFIX}/usr/lib/clang/${LLVM_MAJOR}"
+
+		-DCOMPILER_RT_INCLUDE_TESTS=$(usex test)
+		-DCOMPILER_RT_BUILD_LIBFUZZER=OFF
+		-DCOMPILER_RT_BUILD_MEMPROF=OFF
+		-DCOMPILER_RT_BUILD_ORC=OFF
+		-DCOMPILER_RT_BUILD_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_SANITIZERS=OFF
+		-DCOMPILER_RT_BUILD_XRAY=OFF
+
+		-DPython3_EXECUTABLE="${PYTHON}"
+	)
+
+	if use amd64 && ! target_is_not_host; then
+		mycmakeargs+=(
+			-DCAN_TARGET_i386=$(usex abi_x86_32)
+			-DCAN_TARGET_x86_64=$(usex abi_x86_64)
+		)
+	fi
+
+	if is_crosspkg; then
+		# Needed to target built libc headers
+		export CFLAGS="${CFLAGS} -isystem /usr/${CTARGET}/usr/include"
+		mycmakeargs+=(
+			# Without this, the compiler will compile a test program
+			# and fail due to no builtins.
+			-DCMAKE_C_COMPILER_WORKS=1
+			-DCMAKE_CXX_COMPILER_WORKS=1
+
+			# Without this, compiler-rt install location is not unique
+			# to target triples, only to architecture.
+			# Needed if you want to target multiple libcs for one arch.
+			-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON
+
+			-DCMAKE_ASM_COMPILER_TARGET="${CTARGET}"
+			-DCMAKE_C_COMPILER_TARGET="${CTARGET}"
+			-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON
+		)
+	fi
+
+	if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
+		mycmakeargs+=(
+			# setting -isysroot is disabled with compiler-rt-prefix-paths.patch
+			# this allows adding arm64 support using SDK in EPREFIX
+			-DDARWIN_macosx_CACHED_SYSROOT="${EPREFIX}/MacOSX.sdk"
+			# Set version based on the SDK in EPREFIX.
+			# This disables i386 for SDK >= 10.15
+			-DDARWIN_macosx_OVERRIDE_SDK_VERSION="$(realpath ${EPREFIX}/MacOSX.sdk | sed -e 's/.*MacOSX\(.*\)\.sdk/\1/')"
+			# Use our libtool instead of looking it up with xcrun
+			-DCMAKE_LIBTOOL="${EPREFIX}/usr/bin/${CHOST}-libtool"
+		)
+	fi
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+
+			-DCOMPILER_RT_TEST_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang++"
+		)
+	fi
+
+	cmake_src_configure
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-builtins
+}
diff --git a/sys-libs/glibc/Manifest b/sys-libs/glibc/Manifest
index cb8f81a9f6b1..813ba0b32315 100644
--- a/sys-libs/glibc/Manifest
+++ b/sys-libs/glibc/Manifest
@@ -32,6 +32,7 @@ DIST glibc-2.37-patches-5.tar.xz 37640 BLAKE2B a87fb239208eb6d65c96bf7687570d8d0
 DIST glibc-2.37-patches-6.tar.xz 47132 BLAKE2B a20c2390ef6342ac03abdf131f19221792cb9c7a050cdd5f87c9cfd2b6456edf60e7bfa14a487f11e95698cca736c55872bd4d1e27a915b93ee46f51f9771e8c SHA512 72b4363183c562708043fe6728bc475a4a92273e4707432d4d18c7c737bbc7707be5162923b7ee6e36cdd3eca1d8d4b68542d7162d399f0d60fb8dd6e35f1167
 DIST glibc-2.37.tar.xz 18674604 BLAKE2B 8139cd977b2ed3bfdbde5ffb1cda8f759763dbb83071167272fef798cfbdc0d17cfd1ec893d126c52c91511b7961f3ad12eed34534b99412dfa04a1cdd5b4ea3 SHA512 4fc5932f206bb1b8b54828a28af1a681616b838bbab60c81c82155f3629cbfe1301d271af65511ed917f4c6949a025429221fe6035753282f15346919f15b90c
 DIST glibc-2.38-patches-1.tar.xz 13688 BLAKE2B 198bbaff878c6ede8501b84d996e219af0b2ed82280f98f7858db65feb814c15468808e92bb5e0cc19b38cebc50ec019c3309cfb09193f6cd51d2f1c6a312a3b SHA512 dd760bb73e9b7b90ffabab9bbbb6ef9b2a329ceaa7f75e4a28391b28291160e53b1bac78497ef59c98cd8a4522f59de6fc40681361e1ebfd62f85f0c85d7c262
+DIST glibc-2.38-patches-2.tar.xz 25512 BLAKE2B d7827f25017e7a2391442db42f21b7f365faa9da508cba19ae597ae69b7b20c93e8fe4b4a9a64af21153afe88e8ae2d358aca5819a42d8c42b2c82cdebbcaa33 SHA512 de5843108a2ba411c58ea7c2d3c1aa8eed91589ed286ae89e954fdc1dd14c36825864283764131795e5005290e2ba627a85f2c775d8aedbd920f669be66077ad
 DIST glibc-2.38.tar.xz 18913712 BLAKE2B f9b039f0ef98a7dd8e1cba228ed10286b9e4fbe4dd89af4d26fa5c4e4cf266f19c2746b44d797ce54739d86499e74cf334aaf311bcf6e30120fd7748453e653f SHA512 a6dd5e42dcd63d58e2820c783522c8c895890b6e8c8e6c83b025553de0cc77cdf227e7044e431ead98c89c68a9ce4dd63509b47e647775fb2075f011849c1900
 DIST glibc-systemd-20210729.tar.gz 1480 BLAKE2B 37722c7579df782d890e44dbab99c3de52ab466eb9de80d82405e9bb5620bf39ffc8c5f466a435bdb86ef6d36dd7019c0736573916bda6c67d02a2581e0ec979 SHA512 efd75af58b50522c28cdac7abd1fc56555bc1bb042512c90d8340c1ec09c5791b3872a305bf83723252bbde5855b75d958c041083457765c4cfd170732d09238
 DIST glibc-systemd-20210814.tar.gz 1469 BLAKE2B 10fa7bcb46d4fdce9c0ab353cbd30871e9b09a347a13a9c9a3b5777f931aa3c826c158d2e49532c604d4a834f2fab4089b67495fb88d0398945dc50d45ad9ef1 SHA512 5346a9ea459a1e6ccf665389f2a294de1e16f1e3e05cdf07e3dd99ed0e4f6f8b52cc333d4bff3c75ac90ab6ce70cd4ab2b3e126f920ce7979abd6dda56315efc
@@ -48,6 +49,7 @@ EBUILD glibc-2.35-r11.ebuild 50188 BLAKE2B 7877e71cb62608e79ac5e2a7751f453aa9d14
 EBUILD glibc-2.36-r8.ebuild 52466 BLAKE2B fc59a2935c5e9487585449477ae7a0db2b005467071d4fae7b23169a1c309b716771d9dec01920deeea5eab1dfbc363817612e560cf49be1306c0691d0badd86 SHA512 9510470fa442309ca0df07ff2f0f0ac664cecd3b11080a1aa765aa6307057bf28a35742bedbd83b7d77fec63a67886bb109b5841cdafdec3e374d7df73bb2016
 EBUILD glibc-2.37-r3.ebuild 52043 BLAKE2B 91491de207d167232704fc184736ad240935d2534d9233ee980c854666e74c2ee2da028163e06ccfb64e39cc3720ee1d104e8bf6aa9cc3c643f4e3875f11e6db SHA512 559a26fd9fade821b6747a992d3e54b4660cf8c2e71319cc5820554409b913fd0bb9cb5c3efc364b2cafcb3979eea715949cc6a983cd376eb13d546487719981
 EBUILD glibc-2.37-r4.ebuild 52806 BLAKE2B ec198942cd043bd4673f9cc97a2ad2d45e62fa0c0a11830b8403bd17e16ec40c06045592d13a90d6d12910717edf1c1d27c6355dea5100e98977732ca0fc8962 SHA512 00e687ba68b995274d01d5a2e7ba2b505962e4f5444d89208c5e15d8b410a99cb291dbf91d8d7877f726ea0983ae61319a80925aa7f825cd853ef58a03b85da2
+EBUILD glibc-2.38-r1.ebuild 52749 BLAKE2B 0aadce9350d63d457d62eb00860913acdb13270387b9bf01bc2f4e1bdafaf39030518f03d188fb242bcb22fbe6dc7646162d6808cb83ab6d6e6abbd5c8d5c9b8 SHA512 18eefa2fe75ba19530da1d98427f2d3fed10cdce7a0a8d501e0bd735f0264fb4f1e72cd043666f2ff0ad34ba1b64c5f2d5167413e43a9ded6d73e199117dbf34
 EBUILD glibc-2.38.ebuild 52749 BLAKE2B b48e3b77d50fedc74049b0a126302595e7819266452275a2cd16d8577b4e689c48aba21b066f2b45988b73e8ce36a11b08205a2ab020f17df10d7cc64f980679 SHA512 e560a0f55fbcd24f1db45fe85622aaf5e3f94b9f311c55eb205c00490ab907bf237b9f097676674ea990eec5a3bd6bd88a7ad9f62b00fb44c2552259d6bfeaea
 EBUILD glibc-9999.ebuild 52749 BLAKE2B b48e3b77d50fedc74049b0a126302595e7819266452275a2cd16d8577b4e689c48aba21b066f2b45988b73e8ce36a11b08205a2ab020f17df10d7cc64f980679 SHA512 e560a0f55fbcd24f1db45fe85622aaf5e3f94b9f311c55eb205c00490ab907bf237b9f097676674ea990eec5a3bd6bd88a7ad9f62b00fb44c2552259d6bfeaea
 MISC metadata.xml 2142 BLAKE2B 765ba540eb10afccd1bade4de56f0c13ce269225500a62d1d17328194de69e7fa15d359a14eac6bfa8a36df45344db3d52f5e1811b174cf1fa2bfb95ad7760a7 SHA512 2f4a148c076a0967663d14e76b85a698ddae7093ff299b0dc95a6c3b00957c9bf73443f2bace9670eb62a45465efbcca892bb52b6aac8577acb2bc5f74a7397c
diff --git a/sys-libs/glibc/glibc-2.38-r1.ebuild b/sys-libs/glibc/glibc-2.38-r1.ebuild
new file mode 100644
index 000000000000..e3fa46f4a7ca
--- /dev/null
+++ b/sys-libs/glibc/glibc-2.38-r1.ebuild
@@ -0,0 +1,1674 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# Bumping notes: https://wiki.gentoo.org/wiki/Project:Toolchain/sys-libs/glibc
+# Please read & adapt the page as necessary if obsolete.
+
+PYTHON_COMPAT=( python3_{9..12} )
+TMPFILES_OPTIONAL=1
+
+inherit python-any-r1 prefix preserve-libs toolchain-funcs flag-o-matic gnuconfig \
+	multilib systemd multiprocessing tmpfiles
+
+DESCRIPTION="GNU libc C library"
+HOMEPAGE="https://www.gnu.org/software/libc/"
+LICENSE="LGPL-2.1+ BSD HPND ISC inner-net rc PCRE"
+SLOT="2.2"
+
+EMULTILIB_PKG="true"
+
+# Gentoo patchset (ignored for live ebuilds)
+PATCH_VER=2
+PATCH_DEV=dilfridge
+
+# gcc mulitilib bootstrap files version
+GCC_BOOTSTRAP_VER=20201208
+
+# systemd integration version
+GLIBC_SYSTEMD_VER=20210729
+
+# Minimum kernel version that glibc requires
+MIN_KERN_VER="3.2.0"
+
+# Minimum pax-utils version needed (which contains any new syscall changes for
+# its seccomp filter!). Please double check this!
+MIN_PAX_UTILS_VER="1.3.3"
+
+if [[ ${PV} == 9999* ]]; then
+	inherit git-r3
+else
+	#KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+	SRC_URI="mirror://gnu/glibc/${P}.tar.xz"
+	SRC_URI+=" https://dev.gentoo.org/~${PATCH_DEV}/distfiles/${P}-patches-${PATCH_VER}.tar.xz"
+fi
+
+SRC_URI+=" multilib-bootstrap? ( https://dev.gentoo.org/~dilfridge/distfiles/gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz )"
+SRC_URI+=" systemd? ( https://gitweb.gentoo.org/proj/toolchain/glibc-systemd.git/snapshot/glibc-systemd-${GLIBC_SYSTEMD_VER}.tar.gz )"
+
+IUSE="audit caps cet compile-locales +crypt custom-cflags doc gd hash-sysv-compat headers-only +multiarch multilib multilib-bootstrap nscd perl profile selinux +ssp stack-realign +static-libs suid systemd systemtap test vanilla"
+
+# Here's how the cross-compile logic breaks down ...
+#  CTARGET - machine that will target the binaries
+#  CHOST   - machine that will host the binaries
+#  CBUILD  - machine that will build the binaries
+# If CTARGET != CHOST, it means you want a libc for cross-compiling.
+# If CHOST != CBUILD, it means you want to cross-compile the libc.
+#  CBUILD = CHOST = CTARGET    - native build/install
+#  CBUILD != (CHOST = CTARGET) - cross-compile a native build
+#  (CBUILD = CHOST) != CTARGET - libc for cross-compiler
+#  CBUILD != CHOST != CTARGET  - cross-compile a libc for a cross-compiler
+# For install paths:
+#  CHOST = CTARGET  - install into /
+#  CHOST != CTARGET - install into /usr/CTARGET/
+#
+export CBUILD=${CBUILD:-${CHOST}}
+export CTARGET=${CTARGET:-${CHOST}}
+if [[ ${CTARGET} == ${CHOST} ]] ; then
+	if [[ ${CATEGORY} == cross-* ]] ; then
+		export CTARGET=${CATEGORY#cross-}
+	fi
+fi
+
+# Note [Disable automatic stripping]
+# Disabling automatic stripping for a few reasons:
+# - portage's attempt to strip breaks non-native binaries at least on
+#   arm: bug #697428
+# - portage's attempt to strip libpthread.so.0 breaks gdb thread
+#   enumeration: bug #697910. This is quite subtle:
+#   * gdb uses glibc's libthread_db-1.0.so to enumerate threads.
+#   * libthread_db-1.0.so needs access to libpthread.so.0 local symbols
+#     via 'ps_pglobal_lookup' symbol defined in gdb.
+#   * 'ps_pglobal_lookup' uses '.symtab' section table to resolve all
+#     known symbols in 'libpthread.so.0'. Specifically 'nptl_version'
+#     (unexported) is used to sanity check compatibility before enabling
+#     debugging.
+#     Also see https://sourceware.org/gdb/wiki/FAQ#GDB_does_not_see_any_threads_besides_the_one_in_which_crash_occurred.3B_or_SIGTRAP_kills_my_program_when_I_set_a_breakpoint
+#   * normal 'strip' command trims '.symtab'
+#   Thus our main goal here is to prevent 'libpthread.so.0' from
+#   losing it's '.symtab' entries.
+# As Gentoo's strip does not allow us to pass less aggressive stripping
+# options and does not check the machine target we strip selectively.
+
+# We need a new-enough binutils/gcc to match upstream baseline.
+# Also we need to make sure our binutils/gcc supports TLS,
+# and that gcc already contains the hardened patches.
+# Lastly, let's avoid some openssh nastiness, bug 708224, as
+# convenience to our users.
+
+IDEPEND="
+	!compile-locales? ( sys-apps/locale-gen )
+"
+BDEPEND="
+	${PYTHON_DEPS}
+	>=app-misc/pax-utils-${MIN_PAX_UTILS_VER}
+	sys-devel/bison
+	compile-locales? ( sys-apps/locale-gen )
+	doc? (
+		dev-lang/perl
+		sys-apps/texinfo
+	)
+	test? (
+		dev-lang/perl
+		>=net-dns/libidn2-2.3.0
+	)
+"
+COMMON_DEPEND="
+	gd? ( media-libs/gd:2= )
+	nscd? ( selinux? (
+		audit? ( sys-process/audit )
+		caps? ( sys-libs/libcap )
+	) )
+	suid? ( caps? ( sys-libs/libcap ) )
+	selinux? ( sys-libs/libselinux )
+	systemtap? ( dev-util/systemtap )
+"
+DEPEND="${COMMON_DEPEND}
+"
+RDEPEND="${COMMON_DEPEND}
+	!<app-misc/pax-utils-${MIN_PAX_UTILS_VER}
+	perl? ( dev-lang/perl )
+"
+
+RESTRICT="!test? ( test )"
+
+if [[ ${CATEGORY} == cross-* ]] ; then
+	BDEPEND+=" !headers-only? (
+		>=${CATEGORY}/binutils-2.27
+		>=${CATEGORY}/gcc-6.2
+	)"
+	[[ ${CATEGORY} == *-linux* ]] && DEPEND+=" ${CATEGORY}/linux-headers"
+else
+	BDEPEND+="
+		>=sys-devel/binutils-2.27
+		>=sys-devel/gcc-6.2
+	"
+	DEPEND+=" virtual/os-headers "
+	RDEPEND+="
+		>=net-dns/libidn2-2.3.0
+		vanilla? ( !sys-libs/timezone-data )
+	"
+	PDEPEND+=" !vanilla? ( sys-libs/timezone-data )"
+fi
+
+# Ignore tests whitelisted below
+GENTOO_GLIBC_XFAIL_TESTS="${GENTOO_GLIBC_XFAIL_TESTS:-yes}"
+
+# The following tests fail due to the Gentoo build system and are thus
+# executed but ignored:
+XFAIL_TEST_LIST=(
+	# buggy test, assumes /dev/ and /dev/null on a single filesystem
+	# 'mount --bind /dev/null /chroot/dev/null' breaks it.
+	# https://sourceware.org/PR25909
+	tst-support_descriptors
+
+	# The following tests fail only inside portage
+	# https://bugs.gentoo.org/831267
+	tst-system
+	tst-strerror
+	tst-strsignal
+)
+
+XFAIL_NSPAWN_TEST_LIST=(
+	# These tests need to be adapted to handle EPERM/ENOSYS(?) properly
+	# upstream, as systemd-nspawn's default seccomp whitelist is too strict.
+	# https://sourceware.org/PR30603
+	test-errno-linux
+	tst-bz21269
+	tst-mlock2
+	tst-ntp_gettime
+	tst-ntp_gettime-time64
+	tst-ntp_gettimex
+	tst-ntp_gettimex-time64
+	tst-pkey
+	tst-process_mrelease
+	tst-adjtime
+	tst-adjtime-time64
+	tst-clock2
+	tst-clock2-time64
+
+	# These fail if --suppress-sync and/or low priority is set
+	tst-sync_file_range
+	tst-sched1
+	test-errno
+)
+
+#
+# Small helper functions
+#
+
+dump_build_environment() {
+	einfo ==== glibc build environment ========================================================
+	local v
+	for v in ABI CBUILD CHOST CTARGET CBUILD_OPT CTARGET_OPT CC CXX CPP LD {AS,C,CPP,CXX,LD}FLAGS MAKEINFO NM AR AS STRIP RANLIB OBJCOPY STRINGS OBJDUMP READELF; do
+		einfo " $(printf '%15s' ${v}:)   ${!v}"
+	done
+	einfo =====================================================================================
+}
+
+is_crosscompile() {
+	[[ ${CHOST} != ${CTARGET} ]]
+}
+
+just_headers() {
+	is_crosscompile && use headers-only
+}
+
+alt_prefix() {
+	is_crosscompile && echo /usr/${CTARGET}
+}
+
+# This prefix is applicable to CHOST when building against this
+# glibc. It is baked into the library at configure time.
+host_eprefix() {
+	is_crosscompile || echo "${EPREFIX}"
+}
+
+# This prefix is applicable to CBUILD when building against this
+# glibc. It determines the destination path at install time.
+build_eprefix() {
+	is_crosscompile && echo "${EPREFIX}"
+}
+
+# We need to be able to set alternative headers for compiling for non-native
+# platform. Will also become useful for testing kernel-headers without screwing
+# up the whole system.
+alt_headers() {
+	echo ${ALT_HEADERS:=$(alt_prefix)/usr/include}
+}
+
+alt_build_headers() {
+	if [[ -z ${ALT_BUILD_HEADERS} ]] ; then
+		ALT_BUILD_HEADERS="$(host_eprefix)$(alt_headers)"
+		if tc-is-cross-compiler ; then
+			ALT_BUILD_HEADERS=${SYSROOT}$(alt_headers)
+			if [[ ! -e ${ALT_BUILD_HEADERS}/linux/version.h ]] ; then
+				local header_path=$(echo '#include <linux/version.h>' | $(tc-getCPP ${CTARGET}) ${CFLAGS} 2>&1 | grep -o '[^"]*linux/version.h')
+				ALT_BUILD_HEADERS=${header_path%/linux/version.h}
+			fi
+		fi
+	fi
+	echo "${ALT_BUILD_HEADERS}"
+}
+
+alt_libdir() {
+	echo $(alt_prefix)/$(get_libdir)
+}
+alt_usrlibdir() {
+	echo $(alt_prefix)/usr/$(get_libdir)
+}
+
+builddir() {
+	echo "${WORKDIR}/build-${ABI}-${CTARGET}-$1"
+}
+
+do_compile_test() {
+	local ret save_cflags=${CFLAGS}
+	CFLAGS+=" $1"
+	shift
+
+	pushd "${T}" >/dev/null
+
+	rm -f glibc-test*
+	printf '%b' "$*" > glibc-test.c
+
+	# We assume CC is already set up.
+	nonfatal emake glibc-test
+	ret=$?
+
+	popd >/dev/null
+
+	CFLAGS=${save_cflags}
+	return ${ret}
+}
+
+do_run_test() {
+	local ret
+
+	if [[ ${MERGE_TYPE} == "binary" ]] ; then
+		# ignore build failures when installing a binary package #324685
+		do_compile_test "" "$@" 2>/dev/null || return 0
+	else
+		if ! do_compile_test "" "$@" ; then
+			ewarn "Simple build failed ... assuming this is desired #324685"
+			return 0
+		fi
+	fi
+
+	pushd "${T}" >/dev/null
+
+	./glibc-test
+	ret=$?
+	rm -f glibc-test*
+
+	popd >/dev/null
+
+	return ${ret}
+}
+
+setup_target_flags() {
+	# This largely mucks with compiler flags.  None of which should matter
+	# when building up just the headers.
+	just_headers && return 0
+
+	case $(tc-arch) in
+		x86)
+			# -march needed for #185404 #199334
+			# TODO: When creating the first glibc cross-compile, this test will
+			# always fail as it does a full link which in turn requires glibc.
+			# Probably also applies when changing multilib profile settings (e.g.
+			# enabling x86 when the profile was amd64-only previously).
+			# We could change main to _start and pass -nostdlib here so that we
+			# only test the gcc code compilation.  Or we could do a compile and
+			# then look for the symbol via scanelf.
+			if ! do_compile_test "" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n'; then
+				local t=${CTARGET_OPT:-${CTARGET}}
+				t=${t%%-*}
+				filter-flags '-march=*'
+				export CFLAGS="-march=${t} ${CFLAGS}"
+				einfo "Auto adding -march=${t} to CFLAGS #185404"
+			fi
+			# For compatibility with older binaries at slight performance cost.
+			use stack-realign && export CFLAGS+=" -mstackrealign"
+		;;
+		amd64)
+			# -march needed for #185404 #199334
+			# TODO: See cross-compile issues listed above for x86.
+			if [[ ${ABI} == x86 ]]; then
+				if ! do_compile_test "${CFLAGS_x86}" 'void f(int i, void *p) {if (__sync_fetch_and_add(&i, 1)) f(i, p);}\nint main(){return 0;}\n'; then
+					local t=${CTARGET_OPT:-${CTARGET}}
+					t=${t%%-*}
+					# Normally the target is x86_64-xxx, so turn that into the -march that
+					# gcc actually accepts. #528708
+					[[ ${t} == "x86_64" ]] && t="x86-64"
+					filter-flags '-march=*'
+					# ugly, ugly, ugly.  ugly.
+					CFLAGS_x86=$(CFLAGS=${CFLAGS_x86} filter-flags '-march=*'; echo "${CFLAGS}")
+					export CFLAGS_x86="${CFLAGS_x86} -march=${t}"
+					einfo "Auto adding -march=${t} to CFLAGS_x86 #185404 (ABI=${ABI})"
+				fi
+				# For compatibility with older binaries at slight performance cost.
+				use stack-realign && export CFLAGS_x86+=" -mstackrealign"
+
+				# Workaround for bug #823780.
+				# Need to save/restore CC because earlier on, we stuff it full of CFLAGS, and tc-getCPP doesn't like that.
+				CC_mangled=${CC}
+				CC=${glibc__GLIBC_CC}
+				if tc-is-gcc && (($(gcc-major-version) == 11)) && (($(gcc-minor-version) <= 2)) && (($(gcc-micro-version) == 0)) ; then
+					export CFLAGS_x86="${CFLAGS_x86} -mno-avx512f"
+					einfo "Auto adding -mno-avx512f to CFLAGS_x86 for buggy GCC version (bug #823780) (ABI=${ABI})"
+				fi
+				CC=${CC_mangled}
+			fi
+		;;
+		mips)
+			# The mips abi cannot support the GNU style hashes. #233233
+			filter-ldflags -Wl,--hash-style=gnu -Wl,--hash-style=both
+		;;
+		ppc|ppc64)
+			# Many arch-specific implementations do not work on ppc with
+			# cache-block not equal to 128 bytes. This breaks memset:
+			#   https://sourceware.org/PR26522
+			#   https://bugs.gentoo.org/737996
+			# Use default -mcpu=. For ppc it means non-multiarch setup.
+			filter-flags '-mcpu=*'
+		;;
+		sparc)
+			# Both sparc and sparc64 can use -fcall-used-g6.  -g7 is bad, though.
+			filter-flags "-fcall-used-g7"
+			append-flags "-fcall-used-g6"
+
+			local cpu
+			case ${CTARGET} in
+			sparc64-*)
+				cpu="sparc64"
+				case $(get-flag mcpu) in
+				v9)
+					# We need to force at least v9a because the base build doesn't
+					# work with just v9.
+					# https://sourceware.org/bugzilla/show_bug.cgi?id=19477
+					append-flags "-Wa,-xarch=v9a"
+					;;
+				esac
+				;;
+			sparc-*)
+				case $(get-flag mcpu) in
+				v8|supersparc|hypersparc|leon|leon3)
+					cpu="sparcv8"
+					;;
+				*)
+					cpu="sparcv9"
+					;;
+				esac
+			;;
+			esac
+			[[ -n ${cpu} ]] && CTARGET_OPT="${cpu}-${CTARGET#*-}"
+		;;
+	esac
+}
+
+setup_flags() {
+	# Make sure host make.conf doesn't pollute us
+	if is_crosscompile || tc-is-cross-compiler ; then
+		CHOST=${CTARGET} strip-unsupported-flags
+	fi
+
+	# Store our CFLAGS because it's changed depending on which CTARGET
+	# we are building when pulling glibc on a multilib profile
+	CFLAGS_BASE=${CFLAGS_BASE-${CFLAGS}}
+	CFLAGS=${CFLAGS_BASE}
+	CXXFLAGS_BASE=${CXXFLAGS_BASE-${CXXFLAGS}}
+	CXXFLAGS=${CXXFLAGS_BASE}
+	ASFLAGS_BASE=${ASFLAGS_BASE-${ASFLAGS}}
+	ASFLAGS=${ASFLAGS_BASE}
+
+	# Allow users to explicitly avoid flag sanitization via
+	# USE=custom-cflags.
+	if ! use custom-cflags; then
+		# Over-zealous CFLAGS can often cause problems.  What may work for one
+		# person may not work for another.  To avoid a large influx of bugs
+		# relating to failed builds, we strip most CFLAGS out to ensure as few
+		# problems as possible.
+		strip-flags
+		# Lock glibc at -O2; we want to be conservative here.
+		filter-flags '-O?'
+		append-flags -O2
+	fi
+
+	strip-unsupported-flags
+	filter-lto
+	filter-flags -m32 -m64 '-mabi=*'
+
+	# glibc aborts if rpath is set by LDFLAGS
+	filter-ldflags '-Wl,-rpath=*'
+
+	# ld can't use -r & --relax at the same time, bug #788901
+	# https://sourceware.org/PR27837
+	filter-ldflags '-Wl,--relax'
+
+	# some weird software relies on sysv hashes in glibc, bug 863863, bug 864100
+	# we have to do that here already so mips can filter it out again :P
+	if use hash-sysv-compat ; then
+		append-ldflags '-Wl,--hash-style=both'
+	fi
+
+	# #492892
+	filter-flags -frecord-gcc-switches
+
+	# #898098
+	filter-flags -fno-builtin
+
+	# #829583
+	filter-lfs-flags
+
+	unset CBUILD_OPT CTARGET_OPT
+	if use multilib ; then
+		CTARGET_OPT=$(get_abi_CTARGET)
+		[[ -z ${CTARGET_OPT} ]] && CTARGET_OPT=$(get_abi_CHOST)
+	fi
+
+	setup_target_flags
+
+	if [[ -n ${CTARGET_OPT} && ${CBUILD} == ${CHOST} ]] && ! is_crosscompile; then
+		CBUILD_OPT=${CTARGET_OPT}
+	fi
+
+	# glibc's headers disallow -O0 and fail at build time:
+	#  include/libc-symbols.h:75:3: #error "glibc cannot be compiled without optimization"
+	# https://sourceware.org/glibc/wiki/FAQ#Why_do_I_get:.60.23error_.22glibc_cannot_be_compiled_without_optimization.22.27.2C_when_trying_to_compile_GNU_libc_with_GNU_CC.3F
+	replace-flags -O0 -O1
+
+	# glibc handles this internally already where it's appropriate;
+	# can't always have SSP when we're the ones setting it up, etc
+	filter-flags '-fstack-protector*'
+
+	# Similar issues as with SSP. Can't inject yourself that early.
+	filter-flags '-fsanitize=*'
+
+	# See end of bug #830454; we handle this via USE=cet
+	filter-flags '-fcf-protection=*'
+
+	# When bootstrapping, we may have a situation where
+	# CET-enabled gcc from seed is used to build CET-disabled
+	# glibc. As such, gcc implicitly enables CET if no
+	# -fcf-protection flag is passed. For a typical package it
+	# should not be a problem, but for glibc it matters as it is
+	# dealing with CET in ld.so. So if CET is supposed to be
+	# disabled for glibc, be explicit about it.
+	if (use amd64 || use x86) && ! use cet; then
+		append-flags '-fcf-protection=none'
+	fi
+}
+
+use_multiarch() {
+	# Allow user to disable runtime arch detection in multilib.
+	use multiarch || return 1
+	# Make sure binutils is new enough to support indirect functions,
+	# #336792. This funky sed supports gold and bfd linkers.
+	local bver nver
+	bver=$($(tc-getLD ${CTARGET}) -v | sed -n -r '1{s:[^0-9]*::;s:^([0-9.]*).*:\1:;p}')
+	case $(tc-arch ${CTARGET}) in
+	amd64|x86) nver="2.20" ;;
+	arm)       nver="2.22" ;;
+	hppa)      nver="2.23" ;;
+	ppc|ppc64) nver="2.20" ;;
+	# ifunc support was added in 2.23, but glibc also needs
+	# machinemode which is in 2.24.
+	s390)      nver="2.24" ;;
+	sparc)     nver="2.21" ;;
+	*)         return 1 ;;
+	esac
+	ver_test ${bver} -ge ${nver}
+}
+
+# Setup toolchain variables that had historically been defined in the
+# profiles for these archs.
+setup_env() {
+	# silly users
+	unset LD_RUN_PATH
+	unset LD_ASSUME_KERNEL
+
+	if is_crosscompile || tc-is-cross-compiler ; then
+		multilib_env ${CTARGET_OPT:-${CTARGET}}
+
+		if ! use multilib ; then
+			MULTILIB_ABIS=${DEFAULT_ABI}
+		else
+			MULTILIB_ABIS=${MULTILIB_ABIS:-${DEFAULT_ABI}}
+		fi
+
+		# If the user has CFLAGS_<CTARGET> in their make.conf, use that,
+		# and fall back on CFLAGS.
+		local VAR=CFLAGS_${CTARGET//[-.]/_}
+		CFLAGS=${!VAR-${CFLAGS}}
+		einfo " $(printf '%15s' 'Manual CFLAGS:')   ${CFLAGS}"
+	fi
+
+	setup_flags
+
+	export ABI=${ABI:-${DEFAULT_ABI:-default}}
+
+	if just_headers ; then
+		# Avoid mixing host's CC and target's CFLAGS_${ABI}:
+		# At this bootstrap stage we have only binutils for
+		# target but not compiler yet.
+		einfo "Skip CC ABI injection. We can't use (cross-)compiler yet."
+		return 0
+	fi
+
+	# Glibc does not work with gold (for various reasons) #269274.
+	tc-ld-disable-gold
+
+	if use doc ; then
+		export MAKEINFO=makeinfo
+	else
+		export MAKEINFO=/dev/null
+	fi
+
+	# Reset CC and CXX to the value at start of emerge
+	export CC=${glibc__ORIG_CC:-${CC:-$(tc-getCC ${CTARGET})}}
+	export CXX=${glibc__ORIG_CXX:-${CXX:-$(tc-getCXX ${CTARGET})}}
+
+	# and make sure glibc__ORIG_CC and glibc__ORIG_CXX is defined now.
+	export glibc__ORIG_CC=${CC}
+	export glibc__ORIG_CXX=${CXX}
+
+	if tc-is-clang && ! use custom-cflags && ! is_crosscompile ; then
+		export glibc__force_gcc=yes
+		# once this is toggled on, it needs to stay on, since with CPP manipulated
+		# tc-is-clang does not work correctly anymore...
+	fi
+
+	if [[ ${glibc__force_gcc} == "yes" ]] ; then
+		# If we are running in an otherwise clang/llvm environment, we need to
+		# recover the proper gcc and binutils settings here, at least until glibc
+		# is finally building with clang. So let's override everything that is
+		# set in the clang profiles.
+		# Want to shoot yourself into the foot? Set USE=custom-cflags, that's always
+		# a good start into that direction.
+		# Also, if you're crosscompiling, let's assume you know what you are doing.
+		# Hopefully.
+		# Last, we need the settings of the *build* environment, not of the
+		# target environment...
+
+		local current_binutils_path=$(env ROOT="${BROOT}" binutils-config -B)
+		local current_gcc_path=$(env ROOT="${BROOT}" gcc-config -B)
+		einfo "Overriding clang configuration, since it won't work here"
+
+		export CC="${current_gcc_path}/gcc"
+		export CPP="${current_gcc_path}/cpp"
+		export CXX="${current_gcc_path}/g++"
+		export LD="${current_binutils_path}/ld.bfd"
+		export AR="${current_binutils_path}/ar"
+		export AS="${current_binutils_path}/as"
+		export NM="${current_binutils_path}/nm"
+		export STRIP="${current_binutils_path}/strip"
+		export RANLIB="${current_binutils_path}/ranlib"
+		export OBJCOPY="${current_binutils_path}/objcopy"
+		export STRINGS="${current_binutils_path}/strings"
+		export OBJDUMP="${current_binutils_path}/objdump"
+		export READELF="${current_binutils_path}/readelf"
+		export ADDR2LINE="${current_binutils_path}/addr2line"
+
+		# do we need to also do flags munging here? yes! at least...
+		filter-flags '-fuse-ld=*'
+		filter-flags '-D_FORTIFY_SOURCE=*'
+
+	else
+
+		# this is the "normal" case
+
+		export CC="$(tc-getCC ${CTARGET})"
+		export CXX="$(tc-getCXX ${CTARGET})"
+
+		# Always use tuple-prefixed toolchain. For non-native ABI glibc's configure
+		# can't detect them automatically due to ${CHOST} mismatch and fallbacks
+		# to unprefixed tools. Similar to multilib.eclass:multilib_toolchain_setup().
+		export NM="$(tc-getNM ${CTARGET})"
+		export READELF="$(tc-getREADELF ${CTARGET})"
+
+	fi
+
+	# We need to export CFLAGS with abi information in them because glibc's
+	# configure script checks CFLAGS for some targets (like mips).  Keep
+	# around the original clean value to avoid appending multiple ABIs on
+	# top of each other. (Why does the comment talk about CFLAGS if the code
+	# acts on CC?)
+	export glibc__GLIBC_CC=${CC}
+	export glibc__GLIBC_CXX=${CXX}
+
+	export glibc__abi_CFLAGS="$(get_abi_CFLAGS)"
+
+	# CFLAGS can contain ABI-specific flags like -mfpu=neon, see bug #657760
+	# To build .S (assembly) files with the same ABI-specific flags
+	# upstream currently recommends adding CFLAGS to CC/CXX:
+	#    https://sourceware.org/PR23273
+	# Note: Passing CFLAGS via CPPFLAGS overrides glibc's arch-specific CFLAGS
+	# and breaks multiarch support. See 659030#c3 for an example.
+	# The glibc configure script doesn't properly use LDFLAGS all the time.
+	export CC="${glibc__GLIBC_CC} ${glibc__abi_CFLAGS} ${CFLAGS} ${LDFLAGS}"
+
+	# Some of the tests are written in C++, so we need to force our multlib abis in, bug 623548
+	export CXX="${glibc__GLIBC_CXX} ${glibc__abi_CFLAGS} ${CFLAGS}"
+
+	if is_crosscompile; then
+		# Assume worst-case bootstrap: glibc is built for the first time
+		# with ${CTARGET}-g++ not available yet. We avoid
+		# building auxiliary programs that require C++: bug #683074
+		# It should not affect final result.
+		export libc_cv_cxx_link_ok=no
+		# The line above has the same effect. We set CXX explicitly
+		# to make build logs less confusing.
+		export CXX=
+	fi
+}
+
+foreach_abi() {
+	setup_env
+
+	local ret=0
+	local abilist=""
+	if use multilib ; then
+		abilist=$(get_install_abis)
+	else
+		abilist=${DEFAULT_ABI}
+	fi
+	local -x ABI
+	for ABI in ${abilist:-default} ; do
+		setup_env
+		einfo "Running $1 for ABI ${ABI}"
+		$1
+		: $(( ret |= $? ))
+	done
+	return ${ret}
+}
+
+glibc_banner() {
+	local b="Gentoo ${PVR}"
+	[[ -n ${PATCH_VER} ]] && ! use vanilla && b+=" (patchset ${PATCH_VER})"
+	echo "${b}"
+}
+
+# The following Kernel version handling functions are mostly copied from portage
+# source. It's better not to use linux-info.eclass here since a) it adds too
+# much magic, see bug 326693 for some of the arguments, and b) some of the
+# functions are just not provided.
+
+g_get_running_KV() {
+	uname -r
+	return $?
+}
+
+g_KV_major() {
+	[[ -z $1 ]] && return 1
+	local KV=$@
+	echo "${KV%%.*}"
+}
+
+g_KV_minor() {
+	[[ -z $1 ]] && return 1
+	local KV=$@
+	KV=${KV#*.}
+	echo "${KV%%.*}"
+}
+
+g_KV_micro() {
+	[[ -z $1 ]] && return 1
+	local KV=$@
+	KV=${KV#*.*.}
+	echo "${KV%%[^[:digit:]]*}"
+}
+
+g_KV_to_int() {
+	[[ -z $1 ]] && return 1
+	local KV_MAJOR=$(g_KV_major "$1")
+	local KV_MINOR=$(g_KV_minor "$1")
+	local KV_MICRO=$(g_KV_micro "$1")
+	local KV_int=$(( KV_MAJOR * 65536 + KV_MINOR * 256 + KV_MICRO ))
+
+	# We make version 2.2.0 the minimum version we will handle as
+	# a sanity check ... if its less, we fail ...
+	if [[ ${KV_int} -ge 131584 ]] ; then
+		echo "${KV_int}"
+		return 0
+	fi
+	return 1
+}
+
+g_int_to_KV() {
+	local version=$1 major minor micro
+	major=$((version / 65536))
+	minor=$(((version % 65536) / 256))
+	micro=$((version % 256))
+	echo ${major}.${minor}.${micro}
+}
+
+eend_KV() {
+	[[ $(g_KV_to_int $1) -ge $(g_KV_to_int $2) ]]
+	eend $?
+}
+
+get_kheader_version() {
+	printf '#include <linux/version.h>\nLINUX_VERSION_CODE\n' | \
+	$(tc-getCPP ${CTARGET}) -I "$(build_eprefix)$(alt_build_headers)" - | \
+	tail -n 1
+}
+
+# We collect all sanity checks here. Consistency is not guranteed between
+# pkg_ and src_ phases, so we call this function both in pkg_pretend and in
+# src_unpack.
+sanity_prechecks() {
+	# Prevent native builds from downgrading
+	if [[ ${MERGE_TYPE} != "buildonly" ]] && \
+	   [[ -z ${ROOT} ]] && \
+	   [[ ${CBUILD} == ${CHOST} ]] && \
+	   [[ ${CHOST} == ${CTARGET} ]] ; then
+
+		# The high rev # is to allow people to downgrade between -r#
+		# versions. We want to block 2.20->2.19, but 2.20-r3->2.20-r2
+		# should be fine. Hopefully we never actually use a r# this
+		# high.
+		if has_version ">${CATEGORY}/${P}-r10000" ; then
+			eerror "Sanity check to keep you from breaking your system:"
+			eerror " Downgrading glibc is not supported and a sure way to destruction."
+			[[ ${I_ALLOW_TO_BREAK_MY_SYSTEM} = yes ]] || die "Aborting to save your system."
+		fi
+
+		if ! do_run_test '#include <unistd.h>\n#include <sys/syscall.h>\nint main(){return syscall(1000)!=-1;}\n' ; then
+			eerror "Your old kernel is broken. You need to update it to a newer"
+			eerror "version as syscall(<bignum>) will break. See bug 279260."
+			die "Old and broken kernel."
+		fi
+	fi
+
+	if [[ ${CTARGET} == i386-* ]] ; then
+		eerror "i386 CHOSTs are no longer supported."
+		eerror "Chances are you don't actually want/need i386."
+		eerror "Please read https://www.gentoo.org/doc/en/change-chost.xml"
+		die "Please fix your CHOST"
+	fi
+
+	if [[ -e /proc/xen ]] && [[ $(tc-arch) == "x86" ]] && ! is-flag -mno-tls-direct-seg-refs ; then
+		ewarn "You are using Xen but don't have -mno-tls-direct-seg-refs in your CFLAGS."
+		ewarn "This will result in a 50% performance penalty when running with a 32bit"
+		ewarn "hypervisor, which is probably not what you want."
+	fi
+
+	# ABI-specific checks follow here. Hey, we have a lot more specific conditions that
+	# we test for...
+	if ! is_crosscompile ; then
+		if use amd64 && use multilib && [[ ${MERGE_TYPE} != "binary" ]] ; then
+			ebegin "Checking that IA32 emulation is enabled in the running kernel"
+			echo 'int main(){return 0;}' > "${T}/check-ia32-emulation.c"
+			local STAT
+			if ${CC-${CHOST}-gcc} ${CFLAGS_x86} "${T}/check-ia32-emulation.c" -o "${T}/check-ia32-emulation.elf32"; then
+				"${T}/check-ia32-emulation.elf32"
+				STAT=$?
+			else
+				# Don't fail here to allow single->multi ABI switch
+				# or recover from breakage like bug #646424
+				ewarn "Failed to compile the ABI test. Broken host glibc?"
+				STAT=0
+			fi
+			rm -f "${T}/check-ia32-emulation.elf32"
+			eend $STAT
+			[[ $STAT -eq 0 ]] || die "CONFIG_IA32_EMULATION must be enabled in the kernel to compile a multilib glibc."
+		fi
+
+	fi
+
+	# When we actually have to compile something...
+	if ! just_headers && [[ ${MERGE_TYPE} != "binary" ]] ; then
+		if [[ -d "${ESYSROOT}"/usr/lib/include ]] ; then
+			# bug #833620, bug #643302
+			eerror "Found ${ESYSROOT}/usr/lib/include directory!"
+			eerror "This is known to break glibc's build."
+			eerror "Please backup its contents then remove the directory."
+			die "Found directory (${ESYSROOT}/usr/lib/include) which will break build (bug #833620)!"
+		fi
+
+		if [[ ${CTARGET} == *-linux* ]] ; then
+			local run_kv build_kv want_kv
+
+			run_kv=$(g_get_running_KV)
+			build_kv=$(g_int_to_KV $(get_kheader_version))
+			want_kv=${MIN_KERN_VER}
+
+			if ! is_crosscompile && ! tc-is-cross-compiler ; then
+				# Building fails on an non-supporting kernel
+				ebegin "Checking running kernel version (${run_kv} >= ${want_kv})"
+				if ! eend_KV ${run_kv} ${want_kv} ; then
+					echo
+					eerror "You need a kernel of at least ${want_kv}!"
+					die "Kernel version too low!"
+				fi
+			fi
+
+			# Do not run this check for pkg_pretend, just pkg_setup and friends (if we ever get used there).
+			# It's plausible (seen it in the wild) that Portage will (correctly) schedule a linux-headers
+			# upgrade before glibc, but because pkg_pretend gets run before any packages are merged at all (not
+			# just glibc), the whole emerge gets aborted without a good reason. We probably don't
+			# need to run this check at all given we have a dependency on the right headers,
+			# but let's leave it as-is for now.
+			if [[ ${EBUILD_PHASE_FUNC} != pkg_pretend ]] ; then
+				ebegin "Checking linux-headers version (${build_kv} >= ${want_kv})"
+				if ! eend_KV ${build_kv} ${want_kv} ; then
+					echo
+					eerror "You need linux-headers of at least ${want_kv}!"
+					die "linux-headers version too low!"
+				fi
+			fi
+		fi
+	fi
+}
+
+upgrade_warning() {
+	if [[ ${MERGE_TYPE} != buildonly && -n ${REPLACING_VERSIONS} && -z ${ROOT} ]]; then
+		local oldv newv=$(ver_cut 1-2 ${PV})
+		for oldv in ${REPLACING_VERSIONS}; do
+			if ver_test ${oldv} -lt ${newv}; then
+				ewarn "After upgrading glibc, please restart all running processes."
+				ewarn "Be sure to include init (telinit u) or systemd (systemctl daemon-reexec)."
+				ewarn "Alternatively, reboot your system."
+				ewarn "(See bug #660556, bug #741116, bug #823756, etc)"
+				break
+			fi
+		done
+	fi
+}
+
+#
+# the phases
+#
+
+# pkg_pretend
+
+pkg_pretend() {
+	upgrade_warning
+}
+
+# pkg_setup
+
+pkg_setup() {
+	# see bug 682570
+	[[ -z ${BOOTSTRAP_RAP} ]] && python-any-r1_pkg_setup
+}
+
+# src_unpack
+
+src_unpack() {
+	setup_env
+
+	einfo "Checking general environment sanity."
+	sanity_prechecks
+
+	use multilib-bootstrap && unpack gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}.tar.xz
+
+	if [[ ${PV} == 9999* ]] ; then
+		EGIT_REPO_URI="https://anongit.gentoo.org/git/proj/toolchain/glibc-patches.git"
+		EGIT_CHECKOUT_DIR=${WORKDIR}/patches-git
+		git-r3_src_unpack
+		mv patches-git/9999 patches || die
+
+		EGIT_REPO_URI="https://sourceware.org/git/glibc.git"
+		EGIT_CHECKOUT_DIR=${S}
+		git-r3_src_unpack
+	else
+		unpack ${P}.tar.xz
+
+		cd "${WORKDIR}" || die
+		unpack glibc-${PV}-patches-${PATCH_VER}.tar.xz
+	fi
+
+	cd "${WORKDIR}" || die
+	use systemd && unpack glibc-systemd-${GLIBC_SYSTEMD_VER}.tar.gz
+}
+
+# src_prepare
+
+src_prepare() {
+	local patchsetname
+	if ! use vanilla ; then
+		if [[ ${PV} == 9999* ]] ; then
+			patchsetname="from git master"
+		else
+			patchsetname="${PV}-${PATCH_VER}"
+		fi
+		einfo "Applying Gentoo Glibc patchset ${patchsetname}"
+		eapply "${WORKDIR}"/patches
+		einfo "Done."
+	fi
+
+	default
+
+	gnuconfig_update
+
+	cd "${WORKDIR}" || die
+	find . -name configure -exec touch {} +
+
+	# Fix permissions on some of the scripts.
+	chmod u+x "${S}"/scripts/*.sh
+
+	cd "${S}" || die
+}
+
+# src_configure
+
+glibc_do_configure() {
+	dump_build_environment
+
+	local myconf=()
+
+	# Use '=strong' instead of '=all' to protect only functions
+	# worth protecting from stack smashes.
+	myconf+=( --enable-stack-protector=$(usex ssp strong no) )
+
+	# Keep a whitelist of targets supporing IFUNC. glibc's ./configure
+	# is not robust enough to detect proper support:
+	#    https://bugs.gentoo.org/641216
+	#    https://sourceware.org/PR22634#c0
+	case $(tc-arch ${CTARGET}) in
+		# Keep whitelist of targets where autodetection mostly works.
+		amd64|x86|sparc|ppc|ppc64|arm|arm64|s390|riscv|loong) ;;
+		# Blacklist everywhere else
+		*) myconf+=( libc_cv_ld_gnu_indirect_function=no ) ;;
+	esac
+
+	# Enable Intel Control-flow Enforcement Technology on amd64 if requested
+	case ${CTARGET} in
+		x86_64-*) myconf+=( $(use_enable cet) ) ;;
+		*) ;;
+	esac
+
+	[[ $(tc-is-softfloat) == "yes" ]] && myconf+=( --without-fp )
+
+	myconf+=( --enable-kernel=${MIN_KERN_VER} )
+
+	# Since SELinux support is only required for nscd, only enable it if:
+	# 1. USE selinux
+	# 2. only for the primary ABI on multilib systems
+	# 3. Not a crosscompile
+	if ! is_crosscompile && use selinux ; then
+		if use multilib ; then
+			if is_final_abi ; then
+				myconf+=( --with-selinux )
+			else
+				myconf+=( --without-selinux )
+			fi
+		else
+			myconf+=( --with-selinux )
+		fi
+	else
+		myconf+=( --without-selinux )
+	fi
+
+	# Force a few tests where we always know the answer but
+	# configure is incapable of finding it.
+	if is_crosscompile ; then
+		export \
+			libc_cv_c_cleanup=yes \
+			libc_cv_forced_unwind=yes
+	fi
+
+	myconf+=(
+		--disable-werror
+		--enable-bind-now
+		--enable-fortify-source
+		--build=${CBUILD_OPT:-${CBUILD}}
+		--host=${CTARGET_OPT:-${CTARGET}}
+		$(use_enable profile)
+		$(use_with gd)
+		--with-headers=$(build_eprefix)$(alt_build_headers)
+		--prefix="$(host_eprefix)/usr"
+		--sysconfdir="$(host_eprefix)/etc"
+		--localstatedir="$(host_eprefix)/var"
+		--libdir='$(prefix)'/$(get_libdir)
+		--mandir='$(prefix)'/share/man
+		--infodir='$(prefix)'/share/info
+		--libexecdir='$(libdir)'/misc/glibc
+		--with-bugurl=https://bugs.gentoo.org/
+		--with-pkgversion="$(glibc_banner)"
+		$(use_enable crypt)
+		$(use_multiarch || echo --disable-multi-arch)
+		$(use_enable systemtap)
+		$(use_enable nscd)
+
+		# /usr/bin/mtrace has a Perl shebang. Gentoo Prefix QA checks fail if
+		# Perl hasn't been installed inside the prefix yet and configure picks
+		# up a Perl from outside the prefix instead. configure will fail to
+		# execute Perl during configure if we're cross-compiling a prefix, but
+		# it will just disable mtrace in that case.
+		# Note: mtrace is needed by the test suite.
+		ac_cv_path_PERL="$(usex perl "${EPREFIX}"/usr/bin/perl $(usex test "${EPREFIX}"/usr/bin/perl $(usex doc "${EPREFIX}"/usr/bin/perl no)))"
+
+		# locale data is arch-independent
+		# https://bugs.gentoo.org/753740
+		libc_cv_complocaledir='${exec_prefix}/lib/locale'
+
+		# On aarch64 there is no way to override -mcpu=native, and if
+		# the current cpu does not support SVE configure fails.
+		# Let's boldly assume our toolchain can always build SVE instructions.
+		libc_cv_aarch64_sve_asm=yes
+
+		${EXTRA_ECONF}
+	)
+
+	# We rely on sys-libs/timezone-data for timezone tools normally.
+	myconf+=( $(use_enable vanilla timezone-tools) )
+
+	# These libs don't have configure flags.
+	ac_cv_lib_audit_audit_log_user_avc_message=$(usex audit || echo no)
+	ac_cv_lib_cap_cap_init=$(usex caps || echo no)
+
+	# There is no configure option for this and we need to export it
+	# since the glibc build will re-run configure on itself
+	export libc_cv_rootsbindir="$(host_eprefix)/sbin"
+	export libc_cv_slibdir="$(host_eprefix)/$(get_libdir)"
+
+	local builddir=$(builddir nptl)
+	mkdir -p "${builddir}"
+	cd "${builddir}"
+	set -- "${S}"/configure "${myconf[@]}"
+	echo "$@"
+	"$@" || die "failed to configure glibc"
+
+	# ia64 static cross-compilers are a pita in so much that they
+	# can't produce static ELFs (as the libgcc.a is broken).  so
+	# disable building of the programs for those targets if it
+	# doesn't work.
+	# XXX: We could turn this into a compiler test, but ia64 is
+	# the only one that matters, so this should be fine for now.
+	if is_crosscompile && [[ ${CTARGET} == ia64* ]] ; then
+		sed -i '1i+link-static = touch $@' config.make
+	fi
+
+	# If we're trying to migrate between ABI sets, we need
+	# to lie and use a local copy of gcc.  Like if the system
+	# is built with MULTILIB_ABIS="amd64 x86" but we want to
+	# add x32 to it, gcc/glibc don't yet support x32.
+	#
+	if [[ -n ${GCC_BOOTSTRAP_VER} ]] && use multilib-bootstrap ; then
+		echo 'int main(void){}' > "${T}"/test.c || die
+		if ! $(tc-getCC ${CTARGET}) ${CFLAGS} ${LDFLAGS} "${T}"/test.c -Wl,-emain -lgcc 2>/dev/null ; then
+			sed -i -e '/^CC = /s:$: -B$(objdir)/../'"gcc-multilib-bootstrap-${GCC_BOOTSTRAP_VER}/${ABI}:" config.make || die
+		fi
+	fi
+}
+
+glibc_headers_configure() {
+	export ABI=default
+
+	local builddir=$(builddir "headers")
+	mkdir -p "${builddir}"
+	cd "${builddir}"
+
+	# if we don't have a compiler yet, we can't really test it now ...
+	# hopefully they don't affect header generation, so let's hope for
+	# the best here ...
+	local v vars=(
+		ac_cv_header_cpuid_h=yes
+		libc_cv_{386,390,alpha,arm,hppa,ia64,mips,{powerpc,sparc}{,32,64},sh,x86_64}_tls=yes
+		libc_cv_asm_cfi_directives=yes
+		libc_cv_broken_visibility_attribute=no
+		libc_cv_c_cleanup=yes
+		libc_cv_compiler_powerpc64le_binary128_ok=yes
+		libc_cv_forced_unwind=yes
+		libc_cv_gcc___thread=yes
+		libc_cv_mlong_double_128=yes
+		libc_cv_mlong_double_128ibm=yes
+		libc_cv_ppc_machine=yes
+		libc_cv_ppc_rel16=yes
+		libc_cv_predef_fortify_source=no
+		libc_cv_target_power8_ok=yes
+		libc_cv_visibility_attribute=yes
+		libc_cv_z_combreloc=yes
+		libc_cv_z_execstack=yes
+		libc_cv_z_initfirst=yes
+		libc_cv_z_nodelete=yes
+		libc_cv_z_nodlopen=yes
+		libc_cv_z_relro=yes
+		libc_mips_abi=${ABI}
+		libc_mips_float=$([[ $(tc-is-softfloat) == "yes" ]] && echo soft || echo hard)
+		# These libs don't have configure flags.
+		ac_cv_lib_audit_audit_log_user_avc_message=no
+		ac_cv_lib_cap_cap_init=no
+	)
+
+	einfo "Forcing cached settings:"
+	for v in "${vars[@]}" ; do
+		einfo " ${v}"
+		export ${v}
+	done
+
+	local headers_only_arch_CPPFLAGS=()
+
+	# Blow away some random CC settings that screw things up. #550192
+	if [[ -d ${S}/sysdeps/mips ]]; then
+		pushd "${S}"/sysdeps/mips >/dev/null
+		sed -i -e '/^CC +=/s:=.*:= -D_MIPS_SZPTR=32:' mips32/Makefile mips64/n32/Makefile || die
+		sed -i -e '/^CC +=/s:=.*:= -D_MIPS_SZPTR=64:' mips64/n64/Makefile || die
+
+		# Force the mips ABI to the default.  This is OK because the set of
+		# installed headers in this phase is the same between the 3 ABIs.
+		# If this ever changes, this hack will break, but that's unlikely
+		# as glibc discourages that behavior.
+		# https://crbug.com/647033
+		sed -i -e 's:abiflag=.*:abiflag=_ABIO32:' preconfigure || die
+
+		popd >/dev/null
+	fi
+
+	case ${CTARGET} in
+	riscv*)
+		# RISC-V interrogates the compiler to determine which target to
+		# build.  If building the headers then we don't strictly need a
+		# RISC-V compiler, so the built-in definitions that are provided
+		# along with all RISC-V compiler might not exist.  This causes
+		# glibc's RISC-V preconfigure script to blow up.  Since we're just
+		# building the headers any value will actually work here, so just
+		# pick the standard one (rv64g/lp64d) to make the build scripts
+		# happy for now -- the headers are all the same anyway so it
+		# doesn't matter.
+		headers_only_arch_CPPFLAGS+=(
+			-D__riscv_xlen=64
+			-D__riscv_flen=64
+			-D__riscv_float_abi_double=1
+			-D__riscv_atomic=1
+		) ;;
+	esac
+
+	local myconf=()
+	myconf+=(
+		--disable-sanity-checks
+		--enable-hacker-mode
+		--disable-werror
+		--enable-bind-now
+		--build=${CBUILD_OPT:-${CBUILD}}
+		--host=${CTARGET_OPT:-${CTARGET}}
+		--with-headers=$(build_eprefix)$(alt_build_headers)
+		--prefix="$(host_eprefix)/usr"
+		$(use_enable crypt)
+		${EXTRA_ECONF}
+	)
+
+	# Nothing is compiled here which would affect the headers for the target.
+	# So forcing CC/CFLAGS is sane.
+	local headers_only_CC=$(tc-getBUILD_CC)
+	local headers_only_CFLAGS="-O1 -pipe"
+	local headers_only_CPPFLAGS="-U_FORTIFY_SOURCE ${headers_only_arch_CPPFLAGS[*]}"
+	local headers_only_LDFLAGS=""
+	set -- "${S}"/configure "${myconf[@]}"
+	echo \
+		"CC=${headers_only_CC}" \
+		"CFLAGS=${headers_only_CFLAGS}" \
+		"CPPFLAGS=${headers_only_CPPFLAGS}" \
+		"LDFLAGS=${headers_only_LDFLAGS}" \
+		"$@"
+	CC=${headers_only_CC} \
+	CFLAGS=${headers_only_CFLAGS} \
+	CPPFLAGS=${headers_only_CPPFLAGS} \
+	LDFLAGS="" \
+	"$@" || die "failed to configure glibc"
+}
+
+do_src_configure() {
+	if just_headers ; then
+		glibc_headers_configure
+	else
+		glibc_do_configure nptl
+	fi
+}
+
+src_configure() {
+	foreach_abi do_src_configure
+}
+
+# src_compile
+
+do_src_compile() {
+	emake -C "$(builddir nptl)"
+}
+
+src_compile() {
+	if just_headers ; then
+		return
+	fi
+
+	foreach_abi do_src_compile
+}
+
+# src_test
+
+glibc_src_test() {
+	cd "$(builddir nptl)"
+
+	local myxfailparams=""
+	if [[ "${GENTOO_GLIBC_XFAIL_TESTS}" == "yes" ]] ; then
+		local virt=$(systemd-detect-virt 2>/dev/null)
+		if [[ ${virt} == systemd-nspawn ]] ; then
+			ewarn "Skipping extra tests because in systemd-nspawn container"
+			XFAIL_TEST_LIST+=( "${XFAIL_NSPAWN_TEST_LIST[@]}" )
+		fi
+
+		for myt in ${XFAIL_TEST_LIST[@]} ; do
+			myxfailparams+="test-xfail-${myt}=yes "
+		done
+	fi
+
+	# sandbox does not understand unshare() and prevents
+	# writes to /proc/, which makes many tests fail
+
+	# we give the tests a bit more time to avoid spurious
+	# bug reports on slow arches
+
+	SANDBOX_ON=0 LD_PRELOAD= TIMEOUTFACTOR=16 emake ${myxfailparams} check
+}
+
+src_test() {
+	if just_headers ; then
+		return
+	fi
+
+	foreach_abi glibc_src_test || die "tests failed"
+}
+
+# src_install
+
+run_locale_gen() {
+	# if the host locales.gen contains no entries, we'll install everything
+	local root="$1"
+	local inplace=""
+
+	if [[ "${root}" == "--inplace-glibc" ]] ; then
+		inplace="--inplace-glibc"
+		root="$2"
+	fi
+
+	local locale_list="${root%/}/etc/locale.gen"
+
+	pushd "${ED}"/$(get_libdir) >/dev/null
+
+	if [[ -z $(locale-gen --list --config "${locale_list}") ]] ; then
+		[[ -z ${inplace} ]] && ewarn "Generating all locales; edit /etc/locale.gen to save time/space"
+		locale_list="${root%/}/usr/share/i18n/SUPPORTED"
+	fi
+
+	# bug 736794: we need to be careful with the parallelization... the number of
+	# processors saved in the environment of a binary package may differ strongly
+	# from the number of processes available during postinst
+	local mygenjobs="$(makeopts_jobs)"
+	if [[ "${EMERGE_FROM}" == "binary" ]] ; then
+		mygenjobs="$(nproc)"
+	fi
+
+	set -- locale-gen ${inplace} --jobs "${mygenjobs}" --config "${locale_list}" \
+		--destdir "${root}"
+	echo "$@"
+	"$@"
+
+	popd >/dev/null
+}
+
+glibc_do_src_install() {
+	local builddir=$(builddir nptl)
+	cd "${builddir}"
+
+	emake install_root="${D}/$(build_eprefix)$(alt_prefix)" install
+
+	# This version (2.26) provides some compatibility libraries for the NIS/NIS+ support
+	# which come without headers etc. Only needed for binary packages since the
+	# external net-libs/libnsl has increased soversion. Keep only versioned libraries.
+	find "${D}" -name "libnsl.a" -delete
+	find "${D}" -name "libnsl.so" -delete
+
+	# Normally upstream_pv is ${PV}. Live ebuilds are exception, there we need
+	# to infer upstream version:
+	# '#define VERSION "2.26.90"' -> '2.26.90'
+	local upstream_pv=$(sed -n -r 's/#define VERSION "(.*)"/\1/p' "${S}"/version.h)
+
+	# Avoid stripping binaries not targeted by ${CHOST}. Or else
+	# ${CHOST}-strip would break binaries build for ${CTARGET}.
+	is_crosscompile && dostrip -x /
+
+	# gdb thread introspection relies on local libpthreads symbols. stripping breaks it
+	# See Note [Disable automatic stripping]
+	dostrip -x $(alt_libdir)/libpthread-${upstream_pv}.so
+
+	if [[ -e ${ED}/$(alt_usrlibdir)/libm-${upstream_pv}.a ]] ; then
+		# Move versioned .a file out of libdir to evade portage QA checks
+		# instead of using gen_usr_ldscript(). We fix ldscript as:
+		# "GROUP ( /usr/lib64/libm-<pv>.a ..." -> "GROUP ( /usr/lib64/glibc-<pv>/libm-<pv>.a ..."
+		sed -i "s@\(libm-${upstream_pv}.a\)@${P}/\1@" "${ED}"/$(alt_usrlibdir)/libm.a || die
+		dodir $(alt_usrlibdir)/${P}
+		mv "${ED}"/$(alt_usrlibdir)/libm-${upstream_pv}.a "${ED}"/$(alt_usrlibdir)/${P}/libm-${upstream_pv}.a || die
+	fi
+
+	# We configure toolchains for standalone prefix systems with a sysroot,
+	# which is prepended to paths in ld scripts, so strip the prefix from these.
+	# Before: GROUP ( /foo/lib64/libc.so.6 /foo/usr/lib64/libc_nonshared.a  AS_NEEDED ( /foo/lib64/ld-linux-x86-64.so.2 ) )
+	# After: GROUP ( /lib64/libc.so.6 /usr/lib64/libc_nonshared.a  AS_NEEDED ( /lib64/ld-linux-x86-64.so.2 ) )
+	if [[ -n $(host_eprefix) ]] ; then
+		local file
+		grep -lZIF "ld script" "${ED}/$(alt_usrlibdir)"/lib*.{a,so} 2>/dev/null | while read -rd '' file ; do
+			sed -i "s|$(host_eprefix)/|/|g" "${file}" || die
+		done
+	fi
+
+	# We'll take care of the cache ourselves
+	rm -f "${ED}"/etc/ld.so.cache
+
+	# Everything past this point just needs to be done once ...
+	is_final_abi || return 0
+
+	# Make sure the non-native interp can be found on multilib systems even
+	# if the main library set isn't installed into the right place.  Maybe
+	# we should query the active gcc for info instead of hardcoding it ?
+	local i ldso_abi ldso_name
+	local ldso_abi_list=(
+		# x86
+		amd64   /lib64/ld-linux-x86-64.so.2
+		x32     /libx32/ld-linux-x32.so.2
+		x86     /lib/ld-linux.so.2
+		# mips
+		o32     /lib/ld.so.1
+		n32     /lib32/ld.so.1
+		n64     /lib64/ld.so.1
+		# powerpc
+		ppc     /lib/ld.so.1
+		# riscv
+		ilp32d  /lib/ld-linux-riscv32-ilp32d.so.1
+		ilp32   /lib/ld-linux-riscv32-ilp32.so.1
+		lp64d   /lib/ld-linux-riscv64-lp64d.so.1
+		lp64    /lib/ld-linux-riscv64-lp64.so.1
+		# s390
+		s390    /lib/ld.so.1
+		s390x   /lib/ld64.so.1
+		# sparc
+		sparc32 /lib/ld-linux.so.2
+		sparc64 /lib64/ld-linux.so.2
+	)
+	case $(tc-endian) in
+	little)
+		ldso_abi_list+=(
+			# arm
+			arm64   /lib/ld-linux-aarch64.so.1
+			# ELFv2 (glibc does not support ELFv1 on LE)
+			ppc64   /lib64/ld64.so.2
+		)
+		;;
+	big)
+		ldso_abi_list+=(
+			# arm
+			arm64   /lib/ld-linux-aarch64_be.so.1
+			# ELFv1 (glibc does not support ELFv2 on BE)
+			ppc64   /lib64/ld64.so.1
+		)
+		;;
+	esac
+	if [[ ${SYMLINK_LIB} == "yes" ]] && [[ ! -e ${ED}/$(alt_prefix)/lib ]] ; then
+		dosym $(get_abi_LIBDIR ${DEFAULT_ABI}) $(alt_prefix)/lib
+	fi
+	for (( i = 0; i < ${#ldso_abi_list[@]}; i += 2 )) ; do
+		ldso_abi=${ldso_abi_list[i]}
+		has ${ldso_abi} $(get_install_abis) || continue
+
+		ldso_name="$(alt_prefix)${ldso_abi_list[i+1]}"
+		if [[ ! -L ${ED}/${ldso_name} && ! -e ${ED}/${ldso_name} ]] ; then
+			dosym ../$(get_abi_LIBDIR ${ldso_abi})/${ldso_name##*/} ${ldso_name}
+		fi
+	done
+
+	# In the LSB 5.0 definition, someone had the excellent idea to "standardize"
+	# the runtime loader name, see also https://xkcd.com/927/
+	# Normally, in Gentoo one should never come across executables that require this.
+	# However, binary commercial packages are known to adhere to weird practices.
+	# https://refspecs.linuxfoundation.org/LSB_5.0.0/LSB-Core-AMD64/LSB-Core-AMD64.html#BASELIB
+	local lsb_ldso_name native_ldso_name lsb_ldso_abi
+	local lsb_ldso_abi_list=(
+		# x86
+		amd64	ld-linux-x86-64.so.2	ld-lsb-x86-64.so.3
+	)
+	for (( i = 0; i < ${#lsb_ldso_abi_list[@]}; i += 3 )) ; do
+		lsb_ldso_abi=${lsb_ldso_abi_list[i]}
+		native_ldso_name=${lsb_ldso_abi_list[i+1]}
+		lsb_ldso_name=${lsb_ldso_abi_list[i+2]}
+		has ${lsb_ldso_abi} $(get_install_abis) || continue
+
+		if [[ ! -L ${ED}/$(get_abi_LIBDIR ${lsb_ldso_abi})/${lsb_ldso_name} && ! -e ${ED}/$(get_abi_LIBDIR ${lsb_ldso_abi})/${lsb_ldso_name} ]] ; then
+			dosym ${native_ldso_name} "$(alt_prefix)/$(get_abi_LIBDIR ${lsb_ldso_abi})/${lsb_ldso_name}"
+		fi
+	done
+
+	# With devpts under Linux mounted properly, we do not need the pt_chown
+	# binary to be setuid.  This is because the default owners/perms will be
+	# exactly what we want.
+	if ! use suid ; then
+		find "${ED}" -name pt_chown -exec chmod -s {} +
+	fi
+
+	#################################################################
+	# EVERYTHING AFTER THIS POINT IS FOR NATIVE GLIBC INSTALLS ONLY #
+	#################################################################
+
+	# Make sure we install some symlink hacks so that when we build
+	# a 2nd stage cross-compiler, gcc finds the target system
+	# headers correctly.  See gcc/doc/gccinstall.info
+	if is_crosscompile ; then
+		# We need to make sure that /lib and /usr/lib always exists.
+		# gcc likes to use relative paths to get to its multilibs like
+		# /usr/lib/../lib64/.  So while we don't install any files into
+		# /usr/lib/, we do need it to exist.
+		keepdir $(alt_prefix)/lib
+		keepdir $(alt_prefix)/usr/lib
+
+		dosym usr/include $(alt_prefix)/sys-include
+		return 0
+	fi
+
+	# Files for Debian-style locale updating
+	dodir /usr/share/i18n
+	sed \
+		-e "/^#/d" \
+		-e "/SUPPORTED-LOCALES=/d" \
+		-e "s: \\\\::g" -e "s:/: :g" \
+		"${S}"/localedata/SUPPORTED > "${ED}"/usr/share/i18n/SUPPORTED \
+		|| die "generating /usr/share/i18n/SUPPORTED failed"
+
+	cd "${S}" || die
+
+	# Install misc network config files
+	insinto /etc
+	doins posix/gai.conf
+
+	if use systemd ; then
+		doins "${WORKDIR}/glibc-systemd-${GLIBC_SYSTEMD_VER}/gentoo-config/nsswitch.conf"
+	else
+		doins nss/nsswitch.conf
+	fi
+
+	# Gentoo-specific
+	newins "${FILESDIR}"/host.conf-1 host.conf
+
+	if use nscd ; then
+		doins nscd/nscd.conf
+
+		newinitd "$(prefixify_ro "${FILESDIR}"/nscd-1)" nscd
+
+		local nscd_args=(
+			-e "s:@PIDFILE@:$(strings "${ED}"/usr/sbin/nscd | grep nscd.pid):"
+		)
+
+		sed -i "${nscd_args[@]}" "${ED}"/etc/init.d/nscd
+
+		use systemd && systemd_dounit nscd/nscd.service
+		newtmpfiles nscd/nscd.tmpfiles nscd.conf
+	fi
+
+	echo 'LDPATH="include ld.so.conf.d/*.conf"' > "${T}"/00glibc
+	doenvd "${T}"/00glibc
+
+	for d in BUGS ChangeLog CONFORMANCE FAQ NEWS NOTES PROJECTS README* ; do
+		[[ -s ${d} ]] && dodoc ${d}
+	done
+	dodoc -r ChangeLog.old
+
+	# Prevent overwriting of the /etc/localtime symlink.  We'll handle the
+	# creation of the "factory" symlink in pkg_postinst().
+	rm -f "${ED}"/etc/localtime
+
+	# Generate all locales if this is a native build as locale generation
+	if use compile-locales && ! is_crosscompile ; then
+		run_locale_gen --inplace-glibc "${ED}/"
+	fi
+}
+
+glibc_headers_install() {
+	local builddir=$(builddir "headers")
+	cd "${builddir}"
+	emake install_root="${D}/$(build_eprefix)$(alt_prefix)" install-headers
+
+	insinto $(alt_headers)/gnu
+	doins "${S}"/include/gnu/stubs.h
+
+	# Make sure we install the sys-include symlink so that when
+	# we build a 2nd stage cross-compiler, gcc finds the target
+	# system headers correctly.  See gcc/doc/gccinstall.info
+	dosym usr/include $(alt_prefix)/sys-include
+}
+
+src_install() {
+	if just_headers ; then
+		export ABI=default
+		glibc_headers_install
+		return
+	fi
+
+	foreach_abi glibc_do_src_install
+
+	if ! use static-libs ; then
+		einfo "Not installing static glibc libraries"
+		find "${ED}" -name "*.a" -and -not -name "*_nonshared.a" -delete
+	fi
+}
+
+# Simple test to make sure our new glibc isn't completely broken.
+# Make sure we don't test with statically built binaries since
+# they will fail.  Also, skip if this glibc is a cross compiler.
+#
+# If coreutils is built with USE=multicall, some of these files
+# will just be wrapper scripts, not actual ELFs we can test.
+glibc_sanity_check() {
+	cd / #228809
+
+	# We enter ${ED} so to avoid trouble if the path contains
+	# special characters; for instance if the path contains the
+	# colon character (:), then the linker will try to split it
+	# and look for the libraries in an unexpected place. This can
+	# lead to unsafe code execution if the generated prefix is
+	# within a world-writable directory.
+	# (e.g. /var/tmp/portage:${HOSTNAME})
+	pushd "${ED}"/$(get_libdir) >/dev/null
+
+	# first let's find the actual dynamic linker here
+	# symlinks may point to the wrong abi
+	local newldso=$(find . -maxdepth 1 -name 'ld*so.?' -type f -print -quit)
+
+	einfo Last-minute run tests with ${newldso} in /$(get_libdir) ...
+
+	local x striptest
+	for x in cal date env free ls true uname uptime ; do
+		x=$(type -p ${x})
+		[[ -z ${x} || ${x} != ${EPREFIX}/* ]] && continue
+		striptest=$(LC_ALL="C" file -L ${x} 2>/dev/null) || continue
+		case ${striptest} in
+		*"statically linked"*) continue;;
+		*"ASCII text"*) continue;;
+		esac
+		# We need to clear the locale settings as the upgrade might want
+		# incompatible locale data.  This test is not for verifying that.
+		LC_ALL=C \
+		${newldso} --library-path . ${x} > /dev/null \
+			|| die "simple run test (${x}) failed"
+	done
+
+	popd >/dev/null
+}
+
+pkg_preinst() {
+	# nothing to do if just installing headers
+	just_headers && return
+
+	einfo "Checking general environment sanity."
+	sanity_prechecks
+
+	# prepare /etc/ld.so.conf.d/ for files
+	mkdir -p "${EROOT}"/etc/ld.so.conf.d
+
+	# Default /etc/hosts.conf:multi to on for systems with small dbs.
+	if [[ $(wc -l < "${EROOT}"/etc/hosts) -lt 1000 ]] ; then
+		sed -i '/^multi off/s:off:on:' "${ED}"/etc/host.conf
+		einfo "Defaulting /etc/host.conf:multi to on"
+	fi
+
+	[[ -n ${ROOT} ]] && return 0
+	[[ -d ${ED}/$(get_libdir) ]] || return 0
+	[[ -z ${BOOTSTRAP_RAP} ]] && glibc_sanity_check
+
+	if [[ -L ${EROOT}/usr/lib/locale ]]; then
+		# Help portage migrate this to a directory
+		# https://bugs.gentoo.org/753740
+		rm "${EROOT}"/usr/lib/locale || die
+	fi
+
+	# Keep around libcrypt so that Perl doesn't break when merging libxcrypt
+	# (libxcrypt is the new provider for now of libcrypt.so.{1,2}).
+	# bug #802207
+	if ! use crypt && has_version "${CATEGORY}/${PN}[crypt]" && ! has preserve-libs ${FEATURES}; then
+		PRESERVED_OLD_LIBCRYPT=1
+		cp -p "${EROOT}/$(get_libdir)/libcrypt$(get_libname 1)" "${T}/libcrypt$(get_libname 1)" || die
+	else
+		PRESERVED_OLD_LIBCRYPT=0
+	fi
+}
+
+pkg_postinst() {
+	# nothing to do if just installing headers
+	just_headers && return
+
+	if ! tc-is-cross-compiler && [[ -x ${EROOT}/usr/sbin/iconvconfig ]] ; then
+		# Generate fastloading iconv module configuration file.
+		"${EROOT}"/usr/sbin/iconvconfig --prefix="${ROOT}/"
+	fi
+
+	if ! is_crosscompile && [[ -z ${ROOT} ]] ; then
+		use compile-locales || run_locale_gen "${EROOT}/"
+	fi
+
+	upgrade_warning
+
+	# Check for sanity of /etc/nsswitch.conf, take 2
+	if [[ -e ${EROOT}/etc/nsswitch.conf ]] && ! has_version sys-auth/libnss-nis ; then
+		local entry
+		for entry in passwd group shadow; do
+			if grep -E -q "^[ \t]*${entry}:.*nis" "${EROOT}"/etc/nsswitch.conf; then
+				ewarn ""
+				ewarn "Your ${EROOT}/etc/nsswitch.conf uses NIS. Support for that has been"
+				ewarn "removed from glibc and is now provided by the package"
+				ewarn "  sys-auth/libnss-nis"
+				ewarn "Install it now to keep your NIS setup working."
+				ewarn ""
+			fi
+		done
+	fi
+
+	if [[ ${PRESERVED_OLD_LIBCRYPT} -eq 1 ]] ; then
+		cp -p "${T}/libcrypt$(get_libname 1)" "${EROOT}/$(get_libdir)/libcrypt$(get_libname 1)" || die
+		preserve_old_lib_notify /$(get_libdir)/libcrypt$(get_libname 1)
+
+		elog "Please ignore a possible later error message about a file collision involving"
+		elog "${EROOT}/$(get_libdir)/libcrypt$(get_libname 1). We need to preserve this file for the moment to keep"
+		elog "the upgrade working, but it also needs to be overwritten when"
+		elog "sys-libs/libxcrypt is installed. See bug 802210 for more details."
+	fi
+}
diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index f2c3ccc0dc65..c8814a32d0af 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -11,6 +11,8 @@ DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd2
 DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-17.0.0rc2.src.tar.xz 127795160 BLAKE2B 58ed818f61e1cd179288d578e89460782617a3791a65dbc3e1f207629004f0d61225e87b78fdc0eeb3647912e5056ab68ce35ea2639a34ded1d8bdf0452e31f8 SHA512 7eb5c5172b5e9af65c940c876779f90e20a02659bf1489cedd06c67eea205aa1f4bdc5a8134a120db98cb80ca54673902b530c3315c9b53384c091200d9162c0
 DIST llvm-project-17.0.0rc2.src.tar.xz.sig 438 BLAKE2B 55788eacc592729839dad581b507794f279d84cafcaa49785ae34e02931ee9d4f64caf9e251e280dbc8676f3cacdca52a22f36cf7282655a3fc0721a61c9f003 SHA512 141e1ba7eb9870c21b91060ca484316cc8a402d4e61c8312688023850070b255b0eebe2d10ef63925f7269ee1b347074440e1a9a18d37cb7e1b6c82a7d1a1710
+DIST llvm-project-17.0.0rc3.src.tar.xz 127805656 BLAKE2B ecaead9f227b8357a5dc5ff21554d9b4f5aa036df1b88676fd8c3e16b438381db062872be396af5246e12cd71812a886016e0331a272dafc3508ecd0bfbb50ed SHA512 5f48b4af2e4f9bc470fcfd42fd48072b7bd442bc676d8401b04fbc6e9014a9a78e1bf524ba78f7ae8a1246222a6b03ca662721e3bf6e9eb03a015dd3306c7234
+DIST llvm-project-17.0.0rc3.src.tar.xz.sig 438 BLAKE2B 7b644cf501d17a6aef9b052e359ba06c1840a75e5263de46d938dbbdea07720b53d7ee6b5861ad641d0f7a7f75c6cc17717847b0ea9cf08873dbfacbe1c19074 SHA512 7059b1a90b7dd8cfa831f9e199a3a817358fd75d7c7d7e6de446d5443fce5831877a28e9b964ea238c1d803f9054bf4f53a97622d5f756f7f99aaa1c1a279f44
 DIST llvm-project-7d259b36d2e8148d13087844e6494ad3a5c63edf.tar.gz 195942450 BLAKE2B 3221cc070295edf4f70e5b24ed06cda29e8dd98d3d28ba5ac38b821fc313f7f7dfdc7ad500537c2244af0fa3d750174dfa1699db7f72a44df67e5fa255a3d0aa SHA512 9279290ab482f29af4a2205270038f1817608a63872e03340d43c31fcf5da36191269838912a1460455a8661295e664891d6d123018b12ddc80c2641790d0640
 DIST llvm-project-c4bb3e073548cf436d5fa0406e3ae75e94684dec.tar.gz 195462091 BLAKE2B 982f1105db6cf63575916a20432df4c8623bdff236ce3bd95e63ffd931bc8e1f0e9ea9ad673b09d749c35c1bfe68a48f5b4080118f25040498db09a580db3a7e SHA512 1c591175f44da85eb5ee831220c0387a3d9a0604beaf7abd89fbc6d1e0e9c4f80dac73de1dc22375a45115dd4c1d764fed0a0f628993ca780eb6991682aa0b5b
 DIST llvm-project-fe42682e7818d44cbe19f98ef34caa4e414aa937.tar.gz 196564445 BLAKE2B 056e6622b38009e34392c1d1755086e008bc85e9b4c00126e7ca92ddaee2ede7f31bafbc6ca04c5008983ce843d19fb152d75ce01e6ece4c2d891cc38604532c SHA512 8245f8a50f77e9ac9c0309a0025fde8407bb82d82277e3edba0a995debff50940e9500d4ad65060a330e6c19e2e1332d700ea040ca382ef4b75282a4566cbf72
@@ -21,6 +23,7 @@ EBUILD libcxx-16.0.6.ebuild 5311 BLAKE2B 6ce4c5d11f98384867feb1832a13f790f5e7a44
 EBUILD libcxx-17.0.0.9999.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
 EBUILD libcxx-17.0.0_rc1.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
 EBUILD libcxx-17.0.0_rc2.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
+EBUILD libcxx-17.0.0_rc3.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
 EBUILD libcxx-18.0.0.9999.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
 EBUILD libcxx-18.0.0_pre20230803.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
 EBUILD libcxx-18.0.0_pre20230810.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
diff --git a/sys-libs/libcxx/libcxx-17.0.0_rc3.ebuild b/sys-libs/libcxx/libcxx-17.0.0_rc3.ebuild
new file mode 100644
index 000000000000..bb005b4d8ec8
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-17.0.0_rc3.ebuild
@@ -0,0 +1,204 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+inherit cmake-multilib flag-o-matic llvm llvm.org python-any-r1 \
+	toolchain-funcs
+
+DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
+HOMEPAGE="https://libcxx.llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+KEYWORDS=""
+IUSE="+clang +libcxxabi +static-libs test"
+REQUIRED_USE="test? ( clang )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	libcxxabi? (
+		~sys-libs/libcxxabi-${PV}[static-libs?,${MULTILIB_USEDEP}]
+	)
+	!libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )
+"
+DEPEND="
+	${RDEPEND}
+	sys-devel/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		sys-devel/clang:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+	test? (
+		>=dev-util/cmake-3.16
+		sys-devel/gdb[python]
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=( runtimes libcxx{,abi} llvm/{cmake,utils/llvm-lit} cmake )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	# Darwin Prefix builds do not have llvm installed yet, so rely on
+	# bootstrap-prefix to set the appropriate path vars to LLVM instead
+	# of using llvm_pkg_setup.
+	if [[ ${CHOST} != *-darwin* ]] || has_version sys-devel/llvm; then
+		LLVM_MAX_SLOT=${LLVM_MAJOR} llvm_pkg_setup
+	fi
+	python-any-r1_pkg_setup
+
+	if ! use libcxxabi && ! tc-is-gcc ; then
+		eerror "To build ${PN} against libsupc++, you have to use gcc. Other"
+		eerror "compilers are not supported. Please set CC=gcc and CXX=g++"
+		eerror "and try again."
+		die
+	fi
+}
+
+test_compiler() {
+	$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+src_configure() {
+	# note: we need to do this before multilib kicks in since it will
+	# alter the CHOST
+	local cxxabi cxxabi_incs
+	if use libcxxabi; then
+		cxxabi=system-libcxxabi
+		cxxabi_incs="${EPREFIX}/usr/include/c++/v1"
+	else
+		local gcc_inc="${EPREFIX}/usr/lib/gcc/${CHOST}/$(gcc-fullversion)/include/g++-v$(gcc-major-version)"
+		cxxabi=libsupc++
+		cxxabi_incs="${gcc_inc};${gcc_inc}/${CHOST}"
+	fi
+
+	multilib-minimal_src_configure
+}
+
+multilib_src_configure() {
+	if use clang; then
+		local -x CC=${CHOST}-clang
+		local -x CXX=${CHOST}-clang++
+		strip-unsupported-flags
+	fi
+
+	# link to compiler-rt
+	local use_compiler_rt=OFF
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	# bootstrap: cmake is unhappy if compiler can't link to stdlib
+	local nolib_flags=( -nodefaultlibs -lc )
+	if ! test_compiler; then
+		if test_compiler "${nolib_flags[@]}"; then
+			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
+			ewarn "${CXX} seems to lack runtime, trying with ${nolib_flags[*]}"
+		fi
+	fi
+
+	local libdir=$(get_libdir)
+	local mycmakeargs=(
+		-DCMAKE_CXX_COMPILER_TARGET="${CHOST}"
+		-DPython3_EXECUTABLE="${PYTHON}"
+		-DLLVM_ENABLE_RUNTIMES=libcxx
+		-DLLVM_INCLUDE_TESTS=OFF
+		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+
+		-DLIBCXX_ENABLE_SHARED=ON
+		-DLIBCXX_ENABLE_STATIC=$(usex static-libs)
+		-DLIBCXX_CXX_ABI=${cxxabi}
+		-DLIBCXX_CXX_ABI_INCLUDE_PATHS=${cxxabi_incs}
+		# we're using our own mechanism for generating linker scripts
+		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+		-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
+		-DLIBCXX_INCLUDE_BENCHMARKS=OFF
+		-DLIBCXX_INCLUDE_TESTS=$(usex test)
+		-DLIBCXX_USE_COMPILER_RT=${use_compiler_rt}
+	)
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DPython3_EXECUTABLE="${PYTHON}"
+		)
+	fi
+	cmake_src_configure
+}
+
+multilib_src_compile() {
+	cmake_src_compile
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		gen_shared_ldscript
+		use static-libs && gen_static_ldscript
+	fi
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-cxx
+}
+
+multilib_src_install() {
+	cmake_src_install
+	# since we've replaced libc++.{a,so} with ldscripts, now we have to
+	# install the extra symlinks
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		dolib.so lib/libc++_shared.so
+		use static-libs && dolib.a lib/libc++_static.a
+	fi
+}
+
+# Usage: deps
+gen_ldscript() {
+	local output_format
+	output_format=$($(tc-getCC) ${CFLAGS} ${LDFLAGS} -Wl,--verbose 2>&1 | sed -n 's/^OUTPUT_FORMAT("\([^"]*\)",.*/\1/p')
+	[[ -n ${output_format} ]] && output_format="OUTPUT_FORMAT ( ${output_format} )"
+
+	cat <<-END_LDSCRIPT
+/* GNU ld script
+   Include missing dependencies
+*/
+${output_format}
+GROUP ( $@ )
+END_LDSCRIPT
+}
+
+gen_static_ldscript() {
+	# Move it first.
+	mv lib/libc++{,_static}.a || die
+	# Generate libc++.a ldscript for inclusion of its dependencies so that
+	# clang++ -stdlib=libc++ -static works out of the box.
+	local deps=(
+		libc++_static.a
+		$(usex libcxxabi libc++abi.a libsupc++.a)
+	)
+	# On Linux/glibc it does not link without libpthread or libdl. It is
+	# fine on FreeBSD.
+	use elibc_glibc && deps+=( libpthread.a libdl.a )
+
+	gen_ldscript "${deps[*]}" > lib/libc++.a || die
+}
+
+gen_shared_ldscript() {
+	# Move it first.
+	mv lib/libc++{,_shared}.so || die
+	local deps=(
+		libc++_shared.so
+		# libsupc++ doesn't have a shared version
+		$(usex libcxxabi libc++abi.so libsupc++.a)
+	)
+
+	gen_ldscript "${deps[*]}" > lib/libc++.so || die
+}
diff --git a/sys-libs/libcxxabi/Manifest b/sys-libs/libcxxabi/Manifest
index 22f5985ca975..e1ad9d787c1a 100644
--- a/sys-libs/libcxxabi/Manifest
+++ b/sys-libs/libcxxabi/Manifest
@@ -8,6 +8,8 @@ DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd2
 DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-17.0.0rc2.src.tar.xz 127795160 BLAKE2B 58ed818f61e1cd179288d578e89460782617a3791a65dbc3e1f207629004f0d61225e87b78fdc0eeb3647912e5056ab68ce35ea2639a34ded1d8bdf0452e31f8 SHA512 7eb5c5172b5e9af65c940c876779f90e20a02659bf1489cedd06c67eea205aa1f4bdc5a8134a120db98cb80ca54673902b530c3315c9b53384c091200d9162c0
 DIST llvm-project-17.0.0rc2.src.tar.xz.sig 438 BLAKE2B 55788eacc592729839dad581b507794f279d84cafcaa49785ae34e02931ee9d4f64caf9e251e280dbc8676f3cacdca52a22f36cf7282655a3fc0721a61c9f003 SHA512 141e1ba7eb9870c21b91060ca484316cc8a402d4e61c8312688023850070b255b0eebe2d10ef63925f7269ee1b347074440e1a9a18d37cb7e1b6c82a7d1a1710
+DIST llvm-project-17.0.0rc3.src.tar.xz 127805656 BLAKE2B ecaead9f227b8357a5dc5ff21554d9b4f5aa036df1b88676fd8c3e16b438381db062872be396af5246e12cd71812a886016e0331a272dafc3508ecd0bfbb50ed SHA512 5f48b4af2e4f9bc470fcfd42fd48072b7bd442bc676d8401b04fbc6e9014a9a78e1bf524ba78f7ae8a1246222a6b03ca662721e3bf6e9eb03a015dd3306c7234
+DIST llvm-project-17.0.0rc3.src.tar.xz.sig 438 BLAKE2B 7b644cf501d17a6aef9b052e359ba06c1840a75e5263de46d938dbbdea07720b53d7ee6b5861ad641d0f7a7f75c6cc17717847b0ea9cf08873dbfacbe1c19074 SHA512 7059b1a90b7dd8cfa831f9e199a3a817358fd75d7c7d7e6de446d5443fce5831877a28e9b964ea238c1d803f9054bf4f53a97622d5f756f7f99aaa1c1a279f44
 DIST llvm-project-7d259b36d2e8148d13087844e6494ad3a5c63edf.tar.gz 195942450 BLAKE2B 3221cc070295edf4f70e5b24ed06cda29e8dd98d3d28ba5ac38b821fc313f7f7dfdc7ad500537c2244af0fa3d750174dfa1699db7f72a44df67e5fa255a3d0aa SHA512 9279290ab482f29af4a2205270038f1817608a63872e03340d43c31fcf5da36191269838912a1460455a8661295e664891d6d123018b12ddc80c2641790d0640
 DIST llvm-project-c4bb3e073548cf436d5fa0406e3ae75e94684dec.tar.gz 195462091 BLAKE2B 982f1105db6cf63575916a20432df4c8623bdff236ce3bd95e63ffd931bc8e1f0e9ea9ad673b09d749c35c1bfe68a48f5b4080118f25040498db09a580db3a7e SHA512 1c591175f44da85eb5ee831220c0387a3d9a0604beaf7abd89fbc6d1e0e9c4f80dac73de1dc22375a45115dd4c1d764fed0a0f628993ca780eb6991682aa0b5b
 DIST llvm-project-fe42682e7818d44cbe19f98ef34caa4e414aa937.tar.gz 196564445 BLAKE2B 056e6622b38009e34392c1d1755086e008bc85e9b4c00126e7ca92ddaee2ede7f31bafbc6ca04c5008983ce843d19fb152d75ce01e6ece4c2d891cc38604532c SHA512 8245f8a50f77e9ac9c0309a0025fde8407bb82d82277e3edba0a995debff50940e9500d4ad65060a330e6c19e2e1332d700ea040ca382ef4b75282a4566cbf72
@@ -17,6 +19,7 @@ EBUILD libcxxabi-16.0.6.ebuild 2919 BLAKE2B e281e229f747de5d8f976852b5e4f27126d2
 EBUILD libcxxabi-17.0.0.9999.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
 EBUILD libcxxabi-17.0.0_rc1.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
 EBUILD libcxxabi-17.0.0_rc2.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
+EBUILD libcxxabi-17.0.0_rc3.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
 EBUILD libcxxabi-18.0.0.9999.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
 EBUILD libcxxabi-18.0.0_pre20230803.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
 EBUILD libcxxabi-18.0.0_pre20230810.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
diff --git a/sys-libs/libcxxabi/libcxxabi-17.0.0_rc3.ebuild b/sys-libs/libcxxabi/libcxxabi-17.0.0_rc3.ebuild
new file mode 100644
index 000000000000..4fab65aee6f0
--- /dev/null
+++ b/sys-libs/libcxxabi/libcxxabi-17.0.0_rc3.ebuild
@@ -0,0 +1,116 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+inherit cmake-multilib flag-o-matic llvm llvm.org python-any-r1 \
+	toolchain-funcs
+
+DESCRIPTION="Low level support for a standard C++ library"
+HOMEPAGE="https://libcxxabi.llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+KEYWORDS=""
+IUSE="+clang +static-libs test"
+REQUIRED_USE="test? ( clang )"
+RESTRICT="!test? ( test )"
+
+# in 15.x, cxxabi.h is moving from libcxx to libcxxabi
+RDEPEND+="
+	!<sys-libs/libcxx-15
+"
+DEPEND="
+	${RDEPEND}
+	sys-devel/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		sys-devel/clang:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+	test? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=( runtimes libcxx{abi,} llvm/cmake cmake )
+LLVM_TEST_COMPONENTS=( llvm/utils/llvm-lit )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	# darwin prefix builds do not have llvm installed yet, so rely on bootstrap-prefix
+	# to set the appropriate path vars to LLVM instead of using llvm_pkg_setup.
+	if [[ ${CHOST} != *-darwin* ]] || has_version sys-devel/llvm; then
+		LLVM_MAX_SLOT=${LLVM_MAJOR} llvm_pkg_setup
+	fi
+	python-any-r1_pkg_setup
+}
+
+multilib_src_configure() {
+	if use clang; then
+		local -x CC=${CHOST}-clang
+		local -x CXX=${CHOST}-clang++
+		strip-unsupported-flags
+	fi
+
+	# link to compiler-rt
+	local use_compiler_rt=OFF
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	local libdir=$(get_libdir)
+	local mycmakeargs=(
+		-DCMAKE_CXX_COMPILER_TARGET="${CHOST}"
+		-DPython3_EXECUTABLE="${PYTHON}"
+		-DLLVM_ENABLE_RUNTIMES="libcxxabi;libcxx"
+		-DLLVM_INCLUDE_TESTS=OFF
+		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+		-DLIBCXXABI_ENABLE_SHARED=ON
+		-DLIBCXXABI_ENABLE_STATIC=$(usex static-libs)
+		-DLIBCXXABI_INCLUDE_TESTS=$(usex test)
+		-DLIBCXXABI_USE_COMPILER_RT=${use_compiler_rt}
+
+		# upstream is omitting standard search path for this
+		# probably because gcc & clang are bundling their own unwind.h
+		-DLIBCXXABI_LIBUNWIND_INCLUDES="${EPREFIX}"/usr/include
+
+		-DLIBCXX_LIBDIR_SUFFIX=
+		-DLIBCXX_ENABLE_SHARED=ON
+		-DLIBCXX_ENABLE_STATIC=OFF
+		-DLIBCXX_CXX_ABI=libcxxabi
+		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+		-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
+		-DLIBCXX_HAS_GCC_S_LIB=OFF
+		-DLIBCXX_INCLUDE_BENCHMARKS=OFF
+		-DLIBCXX_INCLUDE_TESTS=OFF
+	)
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DPython3_EXECUTABLE="${PYTHON}"
+		)
+	fi
+	cmake_src_configure
+}
+
+multilib_src_compile() {
+	cmake_build cxxabi
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-cxxabi
+}
+
+multilib_src_install() {
+	DESTDIR="${D}" cmake_build install-cxxabi
+}
diff --git a/sys-libs/libomp/Manifest b/sys-libs/libomp/Manifest
index 4f469d7e9e0c..7f9b6c539fab 100644
--- a/sys-libs/libomp/Manifest
+++ b/sys-libs/libomp/Manifest
@@ -11,6 +11,8 @@ DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd2
 DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-17.0.0rc2.src.tar.xz 127795160 BLAKE2B 58ed818f61e1cd179288d578e89460782617a3791a65dbc3e1f207629004f0d61225e87b78fdc0eeb3647912e5056ab68ce35ea2639a34ded1d8bdf0452e31f8 SHA512 7eb5c5172b5e9af65c940c876779f90e20a02659bf1489cedd06c67eea205aa1f4bdc5a8134a120db98cb80ca54673902b530c3315c9b53384c091200d9162c0
 DIST llvm-project-17.0.0rc2.src.tar.xz.sig 438 BLAKE2B 55788eacc592729839dad581b507794f279d84cafcaa49785ae34e02931ee9d4f64caf9e251e280dbc8676f3cacdca52a22f36cf7282655a3fc0721a61c9f003 SHA512 141e1ba7eb9870c21b91060ca484316cc8a402d4e61c8312688023850070b255b0eebe2d10ef63925f7269ee1b347074440e1a9a18d37cb7e1b6c82a7d1a1710
+DIST llvm-project-17.0.0rc3.src.tar.xz 127805656 BLAKE2B ecaead9f227b8357a5dc5ff21554d9b4f5aa036df1b88676fd8c3e16b438381db062872be396af5246e12cd71812a886016e0331a272dafc3508ecd0bfbb50ed SHA512 5f48b4af2e4f9bc470fcfd42fd48072b7bd442bc676d8401b04fbc6e9014a9a78e1bf524ba78f7ae8a1246222a6b03ca662721e3bf6e9eb03a015dd3306c7234
+DIST llvm-project-17.0.0rc3.src.tar.xz.sig 438 BLAKE2B 7b644cf501d17a6aef9b052e359ba06c1840a75e5263de46d938dbbdea07720b53d7ee6b5861ad641d0f7a7f75c6cc17717847b0ea9cf08873dbfacbe1c19074 SHA512 7059b1a90b7dd8cfa831f9e199a3a817358fd75d7c7d7e6de446d5443fce5831877a28e9b964ea238c1d803f9054bf4f53a97622d5f756f7f99aaa1c1a279f44
 DIST llvm-project-7d259b36d2e8148d13087844e6494ad3a5c63edf.tar.gz 195942450 BLAKE2B 3221cc070295edf4f70e5b24ed06cda29e8dd98d3d28ba5ac38b821fc313f7f7dfdc7ad500537c2244af0fa3d750174dfa1699db7f72a44df67e5fa255a3d0aa SHA512 9279290ab482f29af4a2205270038f1817608a63872e03340d43c31fcf5da36191269838912a1460455a8661295e664891d6d123018b12ddc80c2641790d0640
 DIST llvm-project-c4bb3e073548cf436d5fa0406e3ae75e94684dec.tar.gz 195462091 BLAKE2B 982f1105db6cf63575916a20432df4c8623bdff236ce3bd95e63ffd931bc8e1f0e9ea9ad673b09d749c35c1bfe68a48f5b4080118f25040498db09a580db3a7e SHA512 1c591175f44da85eb5ee831220c0387a3d9a0604beaf7abd89fbc6d1e0e9c4f80dac73de1dc22375a45115dd4c1d764fed0a0f628993ca780eb6991682aa0b5b
 DIST llvm-project-fe42682e7818d44cbe19f98ef34caa4e414aa937.tar.gz 196564445 BLAKE2B 056e6622b38009e34392c1d1755086e008bc85e9b4c00126e7ca92ddaee2ede7f31bafbc6ca04c5008983ce843d19fb152d75ce01e6ece4c2d891cc38604532c SHA512 8245f8a50f77e9ac9c0309a0025fde8407bb82d82277e3edba0a995debff50940e9500d4ad65060a330e6c19e2e1332d700ea040ca382ef4b75282a4566cbf72
@@ -21,6 +23,7 @@ EBUILD libomp-16.0.6.ebuild 3988 BLAKE2B 31eee2f5b764917a62cb307fab6dd0744594dc0
 EBUILD libomp-17.0.0.9999.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
 EBUILD libomp-17.0.0_rc1.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
 EBUILD libomp-17.0.0_rc2.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
+EBUILD libomp-17.0.0_rc3.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
 EBUILD libomp-18.0.0.9999.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
 EBUILD libomp-18.0.0_pre20230803.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
 EBUILD libomp-18.0.0_pre20230810.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
diff --git a/sys-libs/libomp/libomp-17.0.0_rc3.ebuild b/sys-libs/libomp/libomp-17.0.0_rc3.ebuild
new file mode 100644
index 000000000000..31560a1c0eef
--- /dev/null
+++ b/sys-libs/libomp/libomp-17.0.0_rc3.ebuild
@@ -0,0 +1,151 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+inherit flag-o-matic cmake-multilib linux-info llvm llvm.org
+inherit python-single-r1 toolchain-funcs
+
+DESCRIPTION="OpenMP runtime library for LLVM/clang compiler"
+HOMEPAGE="https://openmp.llvm.org"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0/${LLVM_SOABI}"
+KEYWORDS=""
+IUSE="
+	+debug gdb-plugin hwloc offload ompt test
+	llvm_targets_AMDGPU llvm_targets_NVPTX
+"
+REQUIRED_USE="
+	gdb-plugin? ( ${PYTHON_REQUIRED_USE} )
+"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	gdb-plugin? ( ${PYTHON_DEPS} )
+	hwloc? ( >=sys-apps/hwloc-2.5:0=[${MULTILIB_USEDEP}] )
+	offload? (
+		dev-libs/libffi:=[${MULTILIB_USEDEP}]
+		~sys-devel/llvm-${PV}[${MULTILIB_USEDEP}]
+		llvm_targets_AMDGPU? ( dev-libs/rocr-runtime:= )
+	)
+"
+# tests:
+# - dev-python/lit provides the test runner
+# - sys-devel/llvm provide test utils (e.g. FileCheck)
+# - sys-devel/clang provides the compiler to run tests
+DEPEND="
+	${RDEPEND}
+"
+BDEPEND="
+	dev-lang/perl
+	offload? (
+		llvm_targets_AMDGPU? ( sys-devel/clang )
+		llvm_targets_NVPTX? ( sys-devel/clang )
+		virtual/pkgconfig
+	)
+	test? (
+		${PYTHON_DEPS}
+		$(python_gen_cond_dep '
+			dev-python/lit[${PYTHON_USEDEP}]
+		')
+		sys-devel/clang
+	)
+"
+
+LLVM_COMPONENTS=( openmp cmake llvm/include )
+llvm.org_set_globals
+
+kernel_pds_check() {
+	if use kernel_linux && kernel_is -lt 4 15 && kernel_is -ge 4 13; then
+		local CONFIG_CHECK="~!SCHED_PDS"
+		local ERROR_SCHED_PDS="\
+PDS scheduler versions >= 0.98c < 0.98i (e.g. used in kernels >= 4.13-pf11
+< 4.14-pf9) do not implement sched_yield() call which may result in horrible
+performance problems with libomp. If you are using one of the specified
+kernel versions, you may want to disable the PDS scheduler."
+
+		check_extra_config
+	fi
+}
+
+pkg_pretend() {
+	kernel_pds_check
+}
+
+pkg_setup() {
+	use offload && LLVM_MAX_SLOT=${LLVM_MAJOR} llvm_pkg_setup
+	if use gdb-plugin || use test; then
+		python-single-r1_pkg_setup
+	fi
+}
+
+multilib_src_configure() {
+	# LTO causes issues in other packages building, #870127
+	filter-lto
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	local build_omptarget=OFF
+	# upstream disallows building libomptarget when sizeof(void*) != 8
+	if use offload &&
+		"$(tc-getCC)" ${CFLAGS} ${CPPFLAGS} -c -x c - -o /dev/null \
+		<<-EOF &>/dev/null
+			int test[sizeof(void *) == 8 ? 1 : -1];
+		EOF
+	then
+		build_omptarget=ON
+	fi
+
+	local libdir="$(get_libdir)"
+	local mycmakeargs=(
+		-DOPENMP_LIBDIR_SUFFIX="${libdir#lib}"
+
+		-DLIBOMP_USE_HWLOC=$(usex hwloc)
+		-DLIBOMP_OMPD_GDB_SUPPORT=$(multilib_native_usex gdb-plugin)
+		-DLIBOMP_OMPT_SUPPORT=$(usex ompt)
+
+		-DOPENMP_ENABLE_LIBOMPTARGET=${build_omptarget}
+
+		# do not install libgomp.so & libiomp5.so aliases
+		-DLIBOMP_INSTALL_ALIASES=OFF
+		# disable unnecessary hack copying stuff back to srcdir
+		-DLIBOMP_COPY_EXPORTS=OFF
+		# prevent trying to access the GPU
+		-DLIBOMPTARGET_AMDGPU_ARCH=LIBOMPTARGET_AMDGPU_ARCH-NOTFOUND
+	)
+
+	if [[ ${build_omptarget} == ON ]]; then
+		if has "${CHOST%%-*}" aarch64 powerpc64le x86_64; then
+			mycmakeargs+=(
+				-DLIBOMPTARGET_BUILD_AMDGPU_PLUGIN=$(usex llvm_targets_AMDGPU)
+				-DLIBOMPTARGET_BUILD_CUDA_PLUGIN=$(usex llvm_targets_NVPTX)
+			)
+		else
+			mycmakeargs+=(
+				-DLIBOMPTARGET_BUILD_AMDGPU_PLUGIN=OFF
+				-DLIBOMPTARGET_BUILD_CUDA_PLUGIN=OFF
+			)
+		fi
+	fi
+
+	use test && mycmakeargs+=(
+		# this project does not use standard LLVM cmake macros
+		-DOPENMP_LLVM_LIT_EXECUTABLE="${EPREFIX}/usr/bin/lit"
+		-DOPENMP_LIT_ARGS="$(get_lit_flags)"
+
+		-DOPENMP_TEST_C_COMPILER="$(type -P "${CHOST}-clang")"
+		-DOPENMP_TEST_CXX_COMPILER="$(type -P "${CHOST}-clang++")"
+	)
+	addpredict /dev/nvidiactl
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-libomp
+}
diff --git a/sys-libs/llvm-libunwind/Manifest b/sys-libs/llvm-libunwind/Manifest
index 02a644a48a52..9ee1398857eb 100644
--- a/sys-libs/llvm-libunwind/Manifest
+++ b/sys-libs/llvm-libunwind/Manifest
@@ -8,6 +8,8 @@ DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd2
 DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-17.0.0rc2.src.tar.xz 127795160 BLAKE2B 58ed818f61e1cd179288d578e89460782617a3791a65dbc3e1f207629004f0d61225e87b78fdc0eeb3647912e5056ab68ce35ea2639a34ded1d8bdf0452e31f8 SHA512 7eb5c5172b5e9af65c940c876779f90e20a02659bf1489cedd06c67eea205aa1f4bdc5a8134a120db98cb80ca54673902b530c3315c9b53384c091200d9162c0
 DIST llvm-project-17.0.0rc2.src.tar.xz.sig 438 BLAKE2B 55788eacc592729839dad581b507794f279d84cafcaa49785ae34e02931ee9d4f64caf9e251e280dbc8676f3cacdca52a22f36cf7282655a3fc0721a61c9f003 SHA512 141e1ba7eb9870c21b91060ca484316cc8a402d4e61c8312688023850070b255b0eebe2d10ef63925f7269ee1b347074440e1a9a18d37cb7e1b6c82a7d1a1710
+DIST llvm-project-17.0.0rc3.src.tar.xz 127805656 BLAKE2B ecaead9f227b8357a5dc5ff21554d9b4f5aa036df1b88676fd8c3e16b438381db062872be396af5246e12cd71812a886016e0331a272dafc3508ecd0bfbb50ed SHA512 5f48b4af2e4f9bc470fcfd42fd48072b7bd442bc676d8401b04fbc6e9014a9a78e1bf524ba78f7ae8a1246222a6b03ca662721e3bf6e9eb03a015dd3306c7234
+DIST llvm-project-17.0.0rc3.src.tar.xz.sig 438 BLAKE2B 7b644cf501d17a6aef9b052e359ba06c1840a75e5263de46d938dbbdea07720b53d7ee6b5861ad641d0f7a7f75c6cc17717847b0ea9cf08873dbfacbe1c19074 SHA512 7059b1a90b7dd8cfa831f9e199a3a817358fd75d7c7d7e6de446d5443fce5831877a28e9b964ea238c1d803f9054bf4f53a97622d5f756f7f99aaa1c1a279f44
 DIST llvm-project-7d259b36d2e8148d13087844e6494ad3a5c63edf.tar.gz 195942450 BLAKE2B 3221cc070295edf4f70e5b24ed06cda29e8dd98d3d28ba5ac38b821fc313f7f7dfdc7ad500537c2244af0fa3d750174dfa1699db7f72a44df67e5fa255a3d0aa SHA512 9279290ab482f29af4a2205270038f1817608a63872e03340d43c31fcf5da36191269838912a1460455a8661295e664891d6d123018b12ddc80c2641790d0640
 DIST llvm-project-c4bb3e073548cf436d5fa0406e3ae75e94684dec.tar.gz 195462091 BLAKE2B 982f1105db6cf63575916a20432df4c8623bdff236ce3bd95e63ffd931bc8e1f0e9ea9ad673b09d749c35c1bfe68a48f5b4080118f25040498db09a580db3a7e SHA512 1c591175f44da85eb5ee831220c0387a3d9a0604beaf7abd89fbc6d1e0e9c4f80dac73de1dc22375a45115dd4c1d764fed0a0f628993ca780eb6991682aa0b5b
 DIST llvm-project-fe42682e7818d44cbe19f98ef34caa4e414aa937.tar.gz 196564445 BLAKE2B 056e6622b38009e34392c1d1755086e008bc85e9b4c00126e7ca92ddaee2ede7f31bafbc6ca04c5008983ce843d19fb152d75ce01e6ece4c2d891cc38604532c SHA512 8245f8a50f77e9ac9c0309a0025fde8407bb82d82277e3edba0a995debff50940e9500d4ad65060a330e6c19e2e1332d700ea040ca382ef4b75282a4566cbf72
@@ -17,6 +19,7 @@ EBUILD llvm-libunwind-16.0.6.ebuild 3040 BLAKE2B af0ca343905805b2aa88dd6d5f28321
 EBUILD llvm-libunwind-17.0.0.9999.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
 EBUILD llvm-libunwind-17.0.0_rc1.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
 EBUILD llvm-libunwind-17.0.0_rc2.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
+EBUILD llvm-libunwind-17.0.0_rc3.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
 EBUILD llvm-libunwind-18.0.0.9999.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
 EBUILD llvm-libunwind-18.0.0_pre20230803.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
 EBUILD llvm-libunwind-18.0.0_pre20230810.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
diff --git a/sys-libs/llvm-libunwind/llvm-libunwind-17.0.0_rc3.ebuild b/sys-libs/llvm-libunwind/llvm-libunwind-17.0.0_rc3.ebuild
new file mode 100644
index 000000000000..43f8868fc308
--- /dev/null
+++ b/sys-libs/llvm-libunwind/llvm-libunwind-17.0.0_rc3.ebuild
@@ -0,0 +1,123 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+inherit cmake-multilib flag-o-matic llvm llvm.org python-any-r1 \
+	toolchain-funcs
+
+DESCRIPTION="C++ runtime stack unwinder from LLVM"
+HOMEPAGE="https://llvm.org/docs/ExceptionHandling.html"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+KEYWORDS=""
+IUSE="+clang +debug static-libs test"
+REQUIRED_USE="test? ( clang )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	!sys-libs/libunwind
+"
+DEPEND="
+	sys-devel/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? (
+		sys-devel/clang:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+	test? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=( runtimes libunwind libcxx llvm/cmake cmake )
+LLVM_TEST_COMPONENTS=( libcxxabi llvm/utils/llvm-lit )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	LLVM_MAX_SLOT=${LLVM_MAJOR} llvm_pkg_setup
+	python-any-r1_pkg_setup
+}
+
+multilib_src_configure() {
+	local libdir=$(get_libdir)
+
+	# https://github.com/llvm/llvm-project/issues/56825
+	# also separately bug #863917
+	filter-lto
+
+	if use clang; then
+		local -x CC=${CHOST}-clang
+		local -x CXX=${CHOST}-clang++
+		strip-unsupported-flags
+	fi
+
+	# link to compiler-rt
+	# https://github.com/gentoo/gentoo/pull/21516
+	local use_compiler_rt=OFF
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	local mycmakeargs=(
+		-DCMAKE_CXX_COMPILER_TARGET="${CHOST}"
+		-DPython3_EXECUTABLE="${PYTHON}"
+		-DLLVM_ENABLE_RUNTIMES="libunwind"
+		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+		-DLLVM_INCLUDE_TESTS=OFF
+		-DLIBUNWIND_ENABLE_ASSERTIONS=$(usex debug)
+		-DLIBUNWIND_ENABLE_STATIC=$(usex static-libs)
+		-DLIBUNWIND_INCLUDE_TESTS=$(usex test)
+		-DLIBUNWIND_INSTALL_HEADERS=ON
+
+		# support non-native unwinding; given it's small enough,
+		# enable it unconditionally
+		-DLIBUNWIND_ENABLE_CROSS_UNWINDING=ON
+
+		# avoid dependency on libgcc_s if compiler-rt is used
+		-DLIBUNWIND_USE_COMPILER_RT=${use_compiler_rt}
+	)
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_ENABLE_RUNTIMES="libunwind;libcxxabi;libcxx"
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DLIBUNWIND_LIBCXX_PATH="${WORKDIR}/libcxx"
+
+			-DLIBCXXABI_LIBDIR_SUFFIX=
+			-DLIBCXXABI_ENABLE_SHARED=OFF
+			-DLIBCXXABI_ENABLE_STATIC=ON
+			-DLIBCXXABI_USE_LLVM_UNWINDER=ON
+			-DLIBCXXABI_INCLUDE_TESTS=OFF
+
+			-DLIBCXX_LIBDIR_SUFFIX=
+			-DLIBCXX_ENABLE_SHARED=OFF
+			-DLIBCXX_ENABLE_STATIC=ON
+			-DLIBCXX_CXX_ABI=libcxxabi
+			-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+			-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
+			-DLIBCXX_HAS_GCC_S_LIB=OFF
+			-DLIBCXX_INCLUDE_TESTS=OFF
+			-DLIBCXX_INCLUDE_BENCHMARKS=OFF
+		)
+	fi
+
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build check-unwind
+}
+
+multilib_src_install() {
+	DESTDIR=${D} cmake_build install-unwind
+}