15 files changed, 979 insertions, 2 deletions
diff --git a/sys-libs/Manifest.gz b/sys-libs/Manifest.gz
index d841502a5d4d..727c01a481b3 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 5fb5dca66b31..b8e7e6593dd3 100644
--- a/sys-libs/compiler-rt-sanitizers/Manifest
+++ b/sys-libs/compiler-rt-sanitizers/Manifest
@@ -6,11 +6,14 @@ DIST llvm-project-15.0.7.src.tar.xz 110936452 BLAKE2B f3d277e2029157329e5be78b78
 DIST llvm-project-15.0.7.src.tar.xz.sig 566 BLAKE2B 47dc8c82d86237b80c6d85f83a6c9a6e9e174cf8e7f367b071e0cd9481d7cd408e991337c5624e07f3f370f26387c814f212808575ed1c1b58404d3e3836b7df SHA512 fc6891b440dd1175eb8df3790590af8d36bc92301660f84744ae15123475aeb900a151e6a8e7998ded27ec4d86871903ad0b89cd61164943054c2e3bc8d8beb2
 DIST llvm-project-16.0.6.src.tar.xz 118013488 BLAKE2B 95192d39cbd2914e5609db365965f1c00bfea6c2d653b3996bd2acef8a2b37e37f6fc8a9d2b65711ad72657e0ef52c42f733053cf65051e7822f27396c30406d SHA512 89a67ebfbbc764cc456e8825ecfa90707741f8835b1b2adffae0b227ab1fe5ca9cce75b0efaffc9ca8431cae528dc54fd838867a56a2b645344d9e82d19ab1b7
 DIST llvm-project-16.0.6.src.tar.xz.sig 566 BLAKE2B 2060cebd5ed57cb8a86a44238c43dfd4b921649298b10c3d19da308374c1e49869174294e29943c2af459fe06428264e26881d6c1288ebbc48686cc2cf467c7a SHA512 ca249262c7102e0889ec1bdc6f71a3a6f0e7e5d5fbab8abcd6fccd2871e7955eff7af5b055a76006097baf0dfaf2f5069eff3035b3107fc552abdb2481b21447
+DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd271691c259925b8047d8425b0eafb55d2c1daf637c3a56903b88e50283667955e780a47f61e7215a1e3a1acd3634c62960cf17317f SHA512 fa7ebe7fad14087861dc0eea08f68e8aa01dcc6560d70163ec38819a7fd799484f6ab1e35a69393a14962b45fa0a469c9d6c5fd2882b3609305bd01bc9f6701f
+DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-5f1a388a11ae67c2e5d7a4d1fe45e369a393c572.tar.gz 194911977 BLAKE2B d7277591ddca0046dcc244f591732440a6c63c06557d96d18792c2544797a3bcea4af241ad1e9c0106a9751f52bfbcec0544020cc20874e8c64a31a8055d07d0 SHA512 b38aed6a21a3dd4325faf45475b843dcebab89d8ad9683e0f7699701f9645fa9467e032b822473c53a3242930d681caba9dd9530560636cf093108640470bbbe
 EBUILD compiler-rt-sanitizers-14.0.6.ebuild 6526 BLAKE2B 371b7d7bfbcacce1c04cf039b15f49bf5c8fb7de0352c4f477b92d1efe0c70442770ec0c6b60572cf5877b5c14492328cf727b2aa5c1dea761eb909aa1e1df6c SHA512 ee1f054abb9954eedd5b098afb1eb741cd2d7b1b329ef66ed3f25f8ed050227a31925852e3d893b0a9913e2ef2ac34efe89c66c19b562c586f7c0352a10a5814
 EBUILD compiler-rt-sanitizers-15.0.7.ebuild 6578 BLAKE2B 79b9477f9f426c7e5ffc07fe9e2abc86ee568d8e081ac5e5e3da3e3e169920fe8c0ce34f9a8ac03a4389f27ecb0b0ff7f5cf91622d614e03300f17ea97d20859 SHA512 9d23f6974edbe69e5d9fa53a3885e8e44741b5e5d90b0e72c6d191b70827d1e590a7c5a3373bc4fb4945a50db0eea5e119baeaeea956c6d92bb087410ce919b0
 EBUILD compiler-rt-sanitizers-16.0.6.ebuild 6547 BLAKE2B 9ca1442170238e841927393cfe42a1ee69a95d6eaf47ea71851e5d8da1b6ae2ed9ea9467732b6e37a0f9c0d8170022d3ea0d77627ab54ac5917c65ca1aa2506a SHA512 74a6d75e3c1e1a7f82133977576a04d2573a3e447f7015999bcd4942c9d320640ea86df7646627b121df69f4f115e7baf2128cc431512e6667877b973f82e238
 EBUILD compiler-rt-sanitizers-17.0.0.9999.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
 EBUILD compiler-rt-sanitizers-17.0.0_pre20230722.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
+EBUILD compiler-rt-sanitizers-17.0.0_rc1.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
 EBUILD compiler-rt-sanitizers-18.0.0.9999.ebuild 6250 BLAKE2B 0166eecaea9e102e761ff0f82deaac5b37cfdc534b1a6262f2e839c9971ea41d4c6123387ef6bf09ee98fefb6cc40aca4d6999378568ed831224e0fdededafdd SHA512 a61cc40f865d512870a881d990f5908c28c9dfa85e30eb5b80aff15f5dcfb8b190cdb9c5e66a57dbe1ec2943412a7600660144ad0d2bfa75c654519fc34b6380
 MISC metadata.xml 1412 BLAKE2B 75675507000fa6a6b8182e6b45a08a2716ae7fb9a7e3428dc8420464e4c1d1bdb5bea62cc2f553c579de5a4faa752b35cb3529d980fb07a055ff4ddf6e752707 SHA512 f05ea5168b923db72f4f5b53e9b748ebbcdae9eff09d86323313055933b47fc0089e1b2d73cd997d73dcfb2dca032344955816425fbddc09d27ca751463aadbb
diff --git a/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-17.0.0_rc1.ebuild b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-17.0.0_rc1.ebuild
new file mode 100644
index 000000000000..b0a49349926b
--- /dev/null
+++ b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-17.0.0_rc1.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 2ad3bb36295b..141e2aa61fef 100644
--- a/sys-libs/compiler-rt/Manifest
+++ b/sys-libs/compiler-rt/Manifest
@@ -6,11 +6,14 @@ DIST llvm-project-15.0.7.src.tar.xz 110936452 BLAKE2B f3d277e2029157329e5be78b78
 DIST llvm-project-15.0.7.src.tar.xz.sig 566 BLAKE2B 47dc8c82d86237b80c6d85f83a6c9a6e9e174cf8e7f367b071e0cd9481d7cd408e991337c5624e07f3f370f26387c814f212808575ed1c1b58404d3e3836b7df SHA512 fc6891b440dd1175eb8df3790590af8d36bc92301660f84744ae15123475aeb900a151e6a8e7998ded27ec4d86871903ad0b89cd61164943054c2e3bc8d8beb2
 DIST llvm-project-16.0.6.src.tar.xz 118013488 BLAKE2B 95192d39cbd2914e5609db365965f1c00bfea6c2d653b3996bd2acef8a2b37e37f6fc8a9d2b65711ad72657e0ef52c42f733053cf65051e7822f27396c30406d SHA512 89a67ebfbbc764cc456e8825ecfa90707741f8835b1b2adffae0b227ab1fe5ca9cce75b0efaffc9ca8431cae528dc54fd838867a56a2b645344d9e82d19ab1b7
 DIST llvm-project-16.0.6.src.tar.xz.sig 566 BLAKE2B 2060cebd5ed57cb8a86a44238c43dfd4b921649298b10c3d19da308374c1e49869174294e29943c2af459fe06428264e26881d6c1288ebbc48686cc2cf467c7a SHA512 ca249262c7102e0889ec1bdc6f71a3a6f0e7e5d5fbab8abcd6fccd2871e7955eff7af5b055a76006097baf0dfaf2f5069eff3035b3107fc552abdb2481b21447
+DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd271691c259925b8047d8425b0eafb55d2c1daf637c3a56903b88e50283667955e780a47f61e7215a1e3a1acd3634c62960cf17317f SHA512 fa7ebe7fad14087861dc0eea08f68e8aa01dcc6560d70163ec38819a7fd799484f6ab1e35a69393a14962b45fa0a469c9d6c5fd2882b3609305bd01bc9f6701f
+DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-5f1a388a11ae67c2e5d7a4d1fe45e369a393c572.tar.gz 194911977 BLAKE2B d7277591ddca0046dcc244f591732440a6c63c06557d96d18792c2544797a3bcea4af241ad1e9c0106a9751f52bfbcec0544020cc20874e8c64a31a8055d07d0 SHA512 b38aed6a21a3dd4325faf45475b843dcebab89d8ad9683e0f7699701f9645fa9467e032b822473c53a3242930d681caba9dd9530560636cf093108640470bbbe
 EBUILD compiler-rt-14.0.6-r1.ebuild 4248 BLAKE2B 56b00f1c57cdaf1cd6dd7f15e13c714461001c0c2fb25e565c1677745e3fe6e61714e2f037814fef3eb32ef6866d517c391cb5f63c852ed132d74b1b5b7ef393 SHA512 31cd40fe6c58a6a653d36e99586230c7686ccb2bcdfa1c8ead4331dec2fd8dc53afc2a1e9bdf165dc5b4f7580c8cd25bc7a68acfa9c881fd775187bd82e28f11
 EBUILD compiler-rt-15.0.7.ebuild 4260 BLAKE2B ae8a86217b480bab08dc99d4c5a648bf99a0ef91fb41233956b4a5d1b10d5ed6b3c14d9c02c43e2c0b11dd19f4773ca995c113e48b14475b95b7ee7b821a72d1 SHA512 79da724a1d2483af0dbcc792d008fe994c4fe075db31c7dfcc64192005427137f0157e81345a4027e5a8ba9104f662bc51bf492bca96e1b46c35a44a1849ab84
 EBUILD compiler-rt-16.0.6.ebuild 4241 BLAKE2B ca26e939a1658be5c5b2fe7a35f2cbc11c806c844039f77065c34adadf49bc78e9d7cc348ffcc7069ba7375517cf9e74aec1bc793675cfd94777c6d57b65bb2b SHA512 2b2fa51ab687ebf724faacabe61342d15fa055c24553de83868ef9e8e0de052ef01a709fe84c9fcd8546cb4ae67efd5b2474b1d6978b121f4c5486ea8b28ad1b
 EBUILD compiler-rt-17.0.0.9999.ebuild 4167 BLAKE2B b0ba171817aaf242be61a372747b538666f1c05010c6e086c8db6e5bfa0e5dc9394b35b7d5d474b4a81cbfaae74605518f5a4a90b45bec395ece0c48b95f8a0b SHA512 f78666a3aaead3587b14cec2af7def9fced4bb9a7f89eaa2888355c217243e1fde668154c2dcb2ed163aef986e71899003daf1bc93abfa3e29bd1db40ea75189
 EBUILD compiler-rt-17.0.0_pre20230722.ebuild 4167 BLAKE2B b0ba171817aaf242be61a372747b538666f1c05010c6e086c8db6e5bfa0e5dc9394b35b7d5d474b4a81cbfaae74605518f5a4a90b45bec395ece0c48b95f8a0b SHA512 f78666a3aaead3587b14cec2af7def9fced4bb9a7f89eaa2888355c217243e1fde668154c2dcb2ed163aef986e71899003daf1bc93abfa3e29bd1db40ea75189
+EBUILD compiler-rt-17.0.0_rc1.ebuild 4167 BLAKE2B b0ba171817aaf242be61a372747b538666f1c05010c6e086c8db6e5bfa0e5dc9394b35b7d5d474b4a81cbfaae74605518f5a4a90b45bec395ece0c48b95f8a0b SHA512 f78666a3aaead3587b14cec2af7def9fced4bb9a7f89eaa2888355c217243e1fde668154c2dcb2ed163aef986e71899003daf1bc93abfa3e29bd1db40ea75189
 EBUILD compiler-rt-18.0.0.9999.ebuild 4167 BLAKE2B b0ba171817aaf242be61a372747b538666f1c05010c6e086c8db6e5bfa0e5dc9394b35b7d5d474b4a81cbfaae74605518f5a4a90b45bec395ece0c48b95f8a0b SHA512 f78666a3aaead3587b14cec2af7def9fced4bb9a7f89eaa2888355c217243e1fde668154c2dcb2ed163aef986e71899003daf1bc93abfa3e29bd1db40ea75189
 MISC metadata.xml 416 BLAKE2B 79a58249c94b605ba57f346c4e05b43853cf6cfb8bb65a4f4e3c44039cccfdb83dd31bfaaaf398bcbdc393efabdfc7ed186fe775976c46227e74decf2c8f4fb2 SHA512 ce30c79a575e5933effb1fec36f9a4ef02d9f97f312feb39c55a88cbda9a1bae1d7af2ec4ad5f66212cbb2cdbfb26f1a436689f16f410153c9d65eb010264c48
diff --git a/sys-libs/compiler-rt/compiler-rt-17.0.0_rc1.ebuild b/sys-libs/compiler-rt/compiler-rt-17.0.0_rc1.ebuild
new file mode 100644
index 000000000000..f31c17f1962a
--- /dev/null
+++ b/sys-libs/compiler-rt/compiler-rt-17.0.0_rc1.ebuild
@@ -0,0 +1,149 @@
+# 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 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
+	python-any-r1_pkg_setup
+}
+
+test_compiler() {
+	$(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}/${P}_build
+
+	if use clang; then
+		# Only do this conditionally to allow overriding with
+		# e.g. CC=clang-13 in case of breakage
+		if ! tc-is-clang ; then
+			local -x CC=${CHOST}-clang
+			local -x CXX=${CHOST}-clang++
+		fi
+
+		strip-unsupported-flags
+	fi
+
+	if ! test_compiler; then
+		local nolib_flags=( -nodefaultlibs -lc )
+
+		if test_compiler "${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="${PYTHON}"
+	)
+
+	if use amd64; then
+		mycmakeargs+=(
+			-DCAN_TARGET_i386=$(usex abi_x86_32)
+			-DCAN_TARGET_x86_64=$(usex abi_x86_64)
+		)
+	fi
+
+	if use prefix && [[ "${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/ldb/Manifest b/sys-libs/ldb/Manifest
index b55e38068bfe..b64931f13649 100644
--- a/sys-libs/ldb/Manifest
+++ b/sys-libs/ldb/Manifest
@@ -11,5 +11,5 @@ EBUILD ldb-2.4.4.ebuild 3061 BLAKE2B 174d0165f7d2a4cc801f11f46c3e51dc958cdd5d613
 EBUILD ldb-2.5.2.ebuild 3068 BLAKE2B 54a90a0d89c0c01340cf9b0257fb0430984481d22833cd059e367ca70880216123a4f0342d3b509bdfb714a704965d082208776da36e22c5f77d14080048e104 SHA512 2e8bb794d1e0250b27302c2a7e9097b2cb591284fa6e7b6e21ad1b8d398e842f3d86b787fd7380d344c377b892a7274655419b9a9ef54c63da63c04baa3377ce
 EBUILD ldb-2.5.3.ebuild 3304 BLAKE2B 964b05f053f408631a48390dd780c6fc1cfd75e611b24bd4c695c5f1cbc2dbe6a17b8db0afde708b9822dfda0429aa88f30a53714de65093116bd1a9b2efa725 SHA512 29c7d01e5f97b041cf1031006cf7edc27da9219f3f30969e682b632cb900f08a0d82c7af9a546ede1e77f75ef7eb19e35e34a6f6998225d646e205cb6abdf5b5
 EBUILD ldb-2.6.2.ebuild 4774 BLAKE2B 7e1eb1daf07db82a51dab1924acddc8f58acc715f8a192237fee562172ceeecb65c38f2b1318ab34a21522fff525425855d42046f8a7f3ccc9705139ee669f69 SHA512 e4810911da620cf1389b7fbf07983d7d68f2fcb151f924f4cf661daf10a071d09c3405c62613cb421125f2c2b182ab25ef3ef72037e522b12b631dcbf4643c34
-EBUILD ldb-2.7.2.ebuild 4769 BLAKE2B a1592828ab76ac4c36071fd9fe5f463ff80dd3f1f346972261f5ca571cbe2f0ed03f25d610a35d2ef3331451c4dd685a022ed13c33c55a5ac0f010d4f0e33352 SHA512 649bb3d2642652af5274bac07acc092b7309fe39fe8ad21a2fe78d1d1403190bc1197fe12847794eb150f74370510dee5d528c9192d78853d93ddb31b476c60a
+EBUILD ldb-2.7.2.ebuild 4767 BLAKE2B aee4e9f694b5404a7d62a28e2e86e7b1d07c4b381a410d7b19a9c7920043697b5e3ae233914f676dea50fe1a14177b926e1a2fc706d4e64ef41eccc0f0675140 SHA512 ecf2224fd3ef75a2d768673f9b6f2751d718289cc363638af2c542279499b2ac1112411c0e2c7d2e6e656361d8c97f0692ef67fcc51140c6359f89b9864c4391
 MISC metadata.xml 526 BLAKE2B 004dbbf0286ced4bcd404eb3caf091f973e67e00b9230d2399f07dcb31d93a423045b353c1813958da151cded2f52996608de1b4294e3cb90cb8da0ac8877f9f SHA512 9f8008b5b57e5f73e79df68d828f1644edb0a154fa97504c3088301aa60e6ba3ac83a2e06d55d14c06cded89196dd635598f1d767ca93398cbf9610af3b49038
diff --git a/sys-libs/ldb/ldb-2.7.2.ebuild b/sys-libs/ldb/ldb-2.7.2.ebuild
index b458813e7f28..13af13b43302 100644
--- a/sys-libs/ldb/ldb-2.7.2.ebuild
+++ b/sys-libs/ldb/ldb-2.7.2.ebuild
@@ -13,7 +13,7 @@ SRC_URI="https://samba.org/ftp/pub/${PN}/${P}.tar.gz"
 
 LICENSE="LGPL-3"
 SLOT="0/${PV}"
-KEYWORDS="~alpha amd64 arm arm64 ~hppa ~ia64 ~loong ~mips ppc ppc64 ~riscv ~s390 ~sparc ~x86"
+KEYWORDS="~alpha amd64 arm arm64 ~hppa ~ia64 ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86"
 IUSE="doc ldap +lmdb python test"
 
 REQUIRED_USE="${PYTHON_REQUIRED_USE}
diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index ad89b4c184c6..d7ace5ae3391 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -7,6 +7,8 @@ DIST llvm-project-15.0.7.src.tar.xz 110936452 BLAKE2B f3d277e2029157329e5be78b78
 DIST llvm-project-15.0.7.src.tar.xz.sig 566 BLAKE2B 47dc8c82d86237b80c6d85f83a6c9a6e9e174cf8e7f367b071e0cd9481d7cd408e991337c5624e07f3f370f26387c814f212808575ed1c1b58404d3e3836b7df SHA512 fc6891b440dd1175eb8df3790590af8d36bc92301660f84744ae15123475aeb900a151e6a8e7998ded27ec4d86871903ad0b89cd61164943054c2e3bc8d8beb2
 DIST llvm-project-16.0.6.src.tar.xz 118013488 BLAKE2B 95192d39cbd2914e5609db365965f1c00bfea6c2d653b3996bd2acef8a2b37e37f6fc8a9d2b65711ad72657e0ef52c42f733053cf65051e7822f27396c30406d SHA512 89a67ebfbbc764cc456e8825ecfa90707741f8835b1b2adffae0b227ab1fe5ca9cce75b0efaffc9ca8431cae528dc54fd838867a56a2b645344d9e82d19ab1b7
 DIST llvm-project-16.0.6.src.tar.xz.sig 566 BLAKE2B 2060cebd5ed57cb8a86a44238c43dfd4b921649298b10c3d19da308374c1e49869174294e29943c2af459fe06428264e26881d6c1288ebbc48686cc2cf467c7a SHA512 ca249262c7102e0889ec1bdc6f71a3a6f0e7e5d5fbab8abcd6fccd2871e7955eff7af5b055a76006097baf0dfaf2f5069eff3035b3107fc552abdb2481b21447
+DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd271691c259925b8047d8425b0eafb55d2c1daf637c3a56903b88e50283667955e780a47f61e7215a1e3a1acd3634c62960cf17317f SHA512 fa7ebe7fad14087861dc0eea08f68e8aa01dcc6560d70163ec38819a7fd799484f6ab1e35a69393a14962b45fa0a469c9d6c5fd2882b3609305bd01bc9f6701f
+DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-5f1a388a11ae67c2e5d7a4d1fe45e369a393c572.tar.gz 194911977 BLAKE2B d7277591ddca0046dcc244f591732440a6c63c06557d96d18792c2544797a3bcea4af241ad1e9c0106a9751f52bfbcec0544020cc20874e8c64a31a8055d07d0 SHA512 b38aed6a21a3dd4325faf45475b843dcebab89d8ad9683e0f7699701f9645fa9467e032b822473c53a3242930d681caba9dd9530560636cf093108640470bbbe
 EBUILD libcxx-14.0.6.ebuild 6950 BLAKE2B f4f8068f1b9dd1a8c22abd4acb4206da1dd7bb4eb029723a2edfe8c5db3a6ed74a677ba00c508ff54806a33b60b131ffd4b9729ed0d6d0bf5296a1e53e2ababf SHA512 a602e45046d931f28d2656bd733823d3289a993acd7399c5cd29915e65eb9ae0cb601f2774dad34534299366ecd9c038488e037b13af8b732f254e561f56c592
 EBUILD libcxx-15.0.7-r1.ebuild 5308 BLAKE2B aeeee8aab5d3aa09f6165186eafe5bd2802105f763295d4160d81563779999fa03aca891474cd8eae9755ee43ec73bfb7ae3d9fa6d32c7c01040cc46f85858af SHA512 7780ac83f357ffc9d4fc72d2649b2996b7ba5f9473d75ab56e04ccff99a8811c4d14f69de4024fe6472794dc0ed267ee2f34b9430f4d8ed054c65b018abd1778
@@ -14,5 +16,6 @@ EBUILD libcxx-15.0.7.ebuild 5283 BLAKE2B 09c43241bab7e5015d3dae5466e49fb24337b87
 EBUILD libcxx-16.0.6.ebuild 5313 BLAKE2B 37f077d523482df9e4949dbd3a9957593e88c4ea82f30fce213c1847b2559fd4dd91ea88c8d5810c08c841e9c7102a6a188d8fea3a63cd63b9cf0b76c9a423e0 SHA512 c34aeb5f1579c83e40eae1c56fe2c370f75976daf9f8ccf25f9129b9a238736b8f180758f453e137e6c6ddd6950cee448c97e814e334ad9b0d22918d680ff466
 EBUILD libcxx-17.0.0.9999.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
 EBUILD libcxx-17.0.0_pre20230722.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
+EBUILD libcxx-17.0.0_rc1.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
 EBUILD libcxx-18.0.0.9999.ebuild 5241 BLAKE2B d2cefdfde25f1f87a3a1419268aa0600dba7a3eb7a62a508b8be403134ab9398e881ba8344753fc5ead6c3eac198eebea07d3554a1d6ee3a5676377b5830729b SHA512 e96c1769afd4927dca8ed02a1add344cfb137d0072651524d4077558b31e9dfd70b6179c86c5aa2cb3c80e5864c5ccdaf867350d3f8f9bf696f92e059db71591
 MISC metadata.xml 718 BLAKE2B 3cc1e43a6f1ada368cfc0bf8aaf49007f6792062b684ab9299b5180d778b158325b6931169b52dd14e85ae9ad6dc1a03be323b814fb920fe8434ad86425d699c SHA512 c2cef3e481c0c3db7de6de8c0a5aff42a1e7fe81155d99f1f0f0988f6d5ca041f787a27a2dde0073037d59e082e2f6da7eefe1303f1c1837ebc12e8e0d28729f
diff --git a/sys-libs/libcxx/libcxx-17.0.0_rc1.ebuild b/sys-libs/libcxx/libcxx-17.0.0_rc1.ebuild
new file mode 100644
index 000000000000..bb005b4d8ec8
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-17.0.0_rc1.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 7879c22eded5..e196b5d516a6 100644
--- a/sys-libs/libcxxabi/Manifest
+++ b/sys-libs/libcxxabi/Manifest
@@ -4,11 +4,14 @@ DIST llvm-project-15.0.7.src.tar.xz 110936452 BLAKE2B f3d277e2029157329e5be78b78
 DIST llvm-project-15.0.7.src.tar.xz.sig 566 BLAKE2B 47dc8c82d86237b80c6d85f83a6c9a6e9e174cf8e7f367b071e0cd9481d7cd408e991337c5624e07f3f370f26387c814f212808575ed1c1b58404d3e3836b7df SHA512 fc6891b440dd1175eb8df3790590af8d36bc92301660f84744ae15123475aeb900a151e6a8e7998ded27ec4d86871903ad0b89cd61164943054c2e3bc8d8beb2
 DIST llvm-project-16.0.6.src.tar.xz 118013488 BLAKE2B 95192d39cbd2914e5609db365965f1c00bfea6c2d653b3996bd2acef8a2b37e37f6fc8a9d2b65711ad72657e0ef52c42f733053cf65051e7822f27396c30406d SHA512 89a67ebfbbc764cc456e8825ecfa90707741f8835b1b2adffae0b227ab1fe5ca9cce75b0efaffc9ca8431cae528dc54fd838867a56a2b645344d9e82d19ab1b7
 DIST llvm-project-16.0.6.src.tar.xz.sig 566 BLAKE2B 2060cebd5ed57cb8a86a44238c43dfd4b921649298b10c3d19da308374c1e49869174294e29943c2af459fe06428264e26881d6c1288ebbc48686cc2cf467c7a SHA512 ca249262c7102e0889ec1bdc6f71a3a6f0e7e5d5fbab8abcd6fccd2871e7955eff7af5b055a76006097baf0dfaf2f5069eff3035b3107fc552abdb2481b21447
+DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd271691c259925b8047d8425b0eafb55d2c1daf637c3a56903b88e50283667955e780a47f61e7215a1e3a1acd3634c62960cf17317f SHA512 fa7ebe7fad14087861dc0eea08f68e8aa01dcc6560d70163ec38819a7fd799484f6ab1e35a69393a14962b45fa0a469c9d6c5fd2882b3609305bd01bc9f6701f
+DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-5f1a388a11ae67c2e5d7a4d1fe45e369a393c572.tar.gz 194911977 BLAKE2B d7277591ddca0046dcc244f591732440a6c63c06557d96d18792c2544797a3bcea4af241ad1e9c0106a9751f52bfbcec0544020cc20874e8c64a31a8055d07d0 SHA512 b38aed6a21a3dd4325faf45475b843dcebab89d8ad9683e0f7699701f9645fa9467e032b822473c53a3242930d681caba9dd9530560636cf093108640470bbbe
 EBUILD libcxxabi-14.0.6.ebuild 3386 BLAKE2B 25c436f437060cdc323ff18e34d8694f558f100f81b990077ed584b7cacabb54fcaa74e67c07179d84dbd8e184f51d157b2bc8d2f48efc607985234b716840f2 SHA512 481c84912363d33b8582b61ed655be3dad86038de100c9ecf072f8bb11d850e25aa587fd43bd19dd84c280a968d2950360115f414f61748d726224aade36da6e
 EBUILD libcxxabi-15.0.7.ebuild 2911 BLAKE2B 5f2004d2f68fe4eddb0b22be82d28fcca7954d0e3ad9a5510744adc4d0dfd7a1ab9fd928404adcd3eeecc58703f51117d0a80e5895b53e0ae7b71621ad5a435c SHA512 5b8e2c6abdec785649aa41b7f05ab86ecab30ff0631d6078c9b1052b406c320c5847b8f16ffa6d9e62ba4a6bca5959b18770810924d6e6da264fb08d6ff738d0
 EBUILD libcxxabi-16.0.6.ebuild 2921 BLAKE2B a2460fad8d08c9fadf8ee69fd9da105d3e7dd42e25c3c18eb3d8e5e0ec2534f682849b33a49655d04c3a4d940bc144ddaff9cb6019985e5b364b9385e3af3357 SHA512 2794a65afd12eb9a6ede8c34081ddc340722a7074c842288e42f732a1edf6fd4d8a51cb7d7da1eadfe3aa1770a0dfc3a9324c629693162effcdc74c246d978e8
 EBUILD libcxxabi-17.0.0.9999.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
 EBUILD libcxxabi-17.0.0_pre20230722.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
+EBUILD libcxxabi-17.0.0_rc1.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
 EBUILD libcxxabi-18.0.0.9999.ebuild 2869 BLAKE2B 28e1f3e4567b4dc38d3e2a687711b4d25049dc3c3e8c2b336697f5296fd6b3345e327f64ef01d791904e7914b243acceac8285e08b18c3d7459b3ff37b0d273e SHA512 ee68103cdbab5d6d510fac94fefb689cb17f7229cfee7389ca3a15e649465fa43017ccf312b8c2c642fd690fcf9ca6be3d2021560f0053beaf90f747b5a8e42d
 MISC metadata.xml 557 BLAKE2B 4f6b0acb7cfdf74971a6fd96051d9f9020141c6117333a8de42bd043935b7bff8d9942faabdf3b1c94597c460393f64eb7d3f7b7d49f39ecfd0094de460f563e SHA512 67a812ef768e681ae77ef6e13bccffcbe53b41e94901f0558b3c7acaf896605ca670c4bb5a690bd9afa3b5a76271341710520a6abc0024c18f437fabde20e847
diff --git a/sys-libs/libcxxabi/libcxxabi-17.0.0_rc1.ebuild b/sys-libs/libcxxabi/libcxxabi-17.0.0_rc1.ebuild
new file mode 100644
index 000000000000..4fab65aee6f0
--- /dev/null
+++ b/sys-libs/libcxxabi/libcxxabi-17.0.0_rc1.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 2e017ae105c5..3817137b6d88 100644
--- a/sys-libs/libomp/Manifest
+++ b/sys-libs/libomp/Manifest
@@ -7,6 +7,8 @@ DIST llvm-project-15.0.7.src.tar.xz 110936452 BLAKE2B f3d277e2029157329e5be78b78
 DIST llvm-project-15.0.7.src.tar.xz.sig 566 BLAKE2B 47dc8c82d86237b80c6d85f83a6c9a6e9e174cf8e7f367b071e0cd9481d7cd408e991337c5624e07f3f370f26387c814f212808575ed1c1b58404d3e3836b7df SHA512 fc6891b440dd1175eb8df3790590af8d36bc92301660f84744ae15123475aeb900a151e6a8e7998ded27ec4d86871903ad0b89cd61164943054c2e3bc8d8beb2
 DIST llvm-project-16.0.6.src.tar.xz 118013488 BLAKE2B 95192d39cbd2914e5609db365965f1c00bfea6c2d653b3996bd2acef8a2b37e37f6fc8a9d2b65711ad72657e0ef52c42f733053cf65051e7822f27396c30406d SHA512 89a67ebfbbc764cc456e8825ecfa90707741f8835b1b2adffae0b227ab1fe5ca9cce75b0efaffc9ca8431cae528dc54fd838867a56a2b645344d9e82d19ab1b7
 DIST llvm-project-16.0.6.src.tar.xz.sig 566 BLAKE2B 2060cebd5ed57cb8a86a44238c43dfd4b921649298b10c3d19da308374c1e49869174294e29943c2af459fe06428264e26881d6c1288ebbc48686cc2cf467c7a SHA512 ca249262c7102e0889ec1bdc6f71a3a6f0e7e5d5fbab8abcd6fccd2871e7955eff7af5b055a76006097baf0dfaf2f5069eff3035b3107fc552abdb2481b21447
+DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd271691c259925b8047d8425b0eafb55d2c1daf637c3a56903b88e50283667955e780a47f61e7215a1e3a1acd3634c62960cf17317f SHA512 fa7ebe7fad14087861dc0eea08f68e8aa01dcc6560d70163ec38819a7fd799484f6ab1e35a69393a14962b45fa0a469c9d6c5fd2882b3609305bd01bc9f6701f
+DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-5f1a388a11ae67c2e5d7a4d1fe45e369a393c572.tar.gz 194911977 BLAKE2B d7277591ddca0046dcc244f591732440a6c63c06557d96d18792c2544797a3bcea4af241ad1e9c0106a9751f52bfbcec0544020cc20874e8c64a31a8055d07d0 SHA512 b38aed6a21a3dd4325faf45475b843dcebab89d8ad9683e0f7699701f9645fa9467e032b822473c53a3242930d681caba9dd9530560636cf093108640470bbbe
 EBUILD libomp-14.0.6-r1.ebuild 3917 BLAKE2B d92540af690dd622122ad1a4ed2548afa141f1254fbe9a9b3d34286b36f0fa70ccaf915f218c1bea8c68377ea20724db9443d365e2e5f290707f444d3ff47ca5 SHA512 433ae63716103af5aa493c7dbae43f10003cac95abaae579dcb61cba6390da4b9b3fc921e410ba899719bd170fa153a7b3d66c8776c37fd074066173c1fea160
 EBUILD libomp-15.0.7-r2.ebuild 3474 BLAKE2B c75fddce61b7e8fe837b4c5bc1b7dacfbe4bc1572537dd7c44c23f894d05b104e8946d896b3b19d78de32a87d866d5911a0f3a8f81796469bba2753d051b2105 SHA512 7dc7c5fd7cd370acadfdf6e15ed09cde0798312ed3c72e770596aecb5817a4ec1477cc1092e3c159d1988bba4200808259705206f80d8fd0019fe07c34f4455d
@@ -14,5 +16,6 @@ EBUILD libomp-15.0.7-r6.ebuild 3480 BLAKE2B 89d638d156dba3a56ad23baef8b14084f1d8
 EBUILD libomp-16.0.6.ebuild 3990 BLAKE2B 0390690a143bbfcc2cd705cb98f87ee7413310ea9da7fb671760dd0fc96109f0661de3923ac09325b659d419b6c3aa0a360bd2f8c82e3a7132d9326a5f765f6c SHA512 4d77a870ab08e13b25ef3a2b99a684bb5be9d8f8648a8872ea3bc304e53020c333aacc8294f07e256e1675deb4382c8c6c18b3cb48dd9c17f99f72adc334c141
 EBUILD libomp-17.0.0.9999.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
 EBUILD libomp-17.0.0_pre20230722.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
+EBUILD libomp-17.0.0_rc1.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
 EBUILD libomp-18.0.0.9999.ebuild 3922 BLAKE2B 88bb2ba5b0e1e7258e20849b0774c22d6d06969adf97e2df5d2663eb83c3591494a686959bfec17e037d97d04c8fed38cefa42678ea0b40a0c88969b0f81add3 SHA512 3ab5aeabd0f94562ed3792a91e1c87f3acee86562cabbba46e39f30756815b3d82e4fb2f0b8a01da4f4d7ad2a07ffa91e2ad14e63cdd2d4ce7b79bfa21aae579
 MISC metadata.xml 963 BLAKE2B fdea4545db21492049061b85eaa7038965183e10aceae7c41daadc1ce10e7e1bcb2e86344659787ee244360b50b51c99e1a348d3acd2185dac80097541a00dd7 SHA512 c279f8e9c2463dc3f6e02856e520105d6f3321b633439bfe7409bfd6e7e43f1450053dc4f6663492caf7077caf3f4ab0f5cf0161631639e3aefa9ff985dc476f
diff --git a/sys-libs/libomp/libomp-17.0.0_rc1.ebuild b/sys-libs/libomp/libomp-17.0.0_rc1.ebuild
new file mode 100644
index 000000000000..31560a1c0eef
--- /dev/null
+++ b/sys-libs/libomp/libomp-17.0.0_rc1.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 b402a0d583ef..5936e8a82350 100644
--- a/sys-libs/llvm-libunwind/Manifest
+++ b/sys-libs/llvm-libunwind/Manifest
@@ -4,11 +4,14 @@ DIST llvm-project-15.0.7.src.tar.xz 110936452 BLAKE2B f3d277e2029157329e5be78b78
 DIST llvm-project-15.0.7.src.tar.xz.sig 566 BLAKE2B 47dc8c82d86237b80c6d85f83a6c9a6e9e174cf8e7f367b071e0cd9481d7cd408e991337c5624e07f3f370f26387c814f212808575ed1c1b58404d3e3836b7df SHA512 fc6891b440dd1175eb8df3790590af8d36bc92301660f84744ae15123475aeb900a151e6a8e7998ded27ec4d86871903ad0b89cd61164943054c2e3bc8d8beb2
 DIST llvm-project-16.0.6.src.tar.xz 118013488 BLAKE2B 95192d39cbd2914e5609db365965f1c00bfea6c2d653b3996bd2acef8a2b37e37f6fc8a9d2b65711ad72657e0ef52c42f733053cf65051e7822f27396c30406d SHA512 89a67ebfbbc764cc456e8825ecfa90707741f8835b1b2adffae0b227ab1fe5ca9cce75b0efaffc9ca8431cae528dc54fd838867a56a2b645344d9e82d19ab1b7
 DIST llvm-project-16.0.6.src.tar.xz.sig 566 BLAKE2B 2060cebd5ed57cb8a86a44238c43dfd4b921649298b10c3d19da308374c1e49869174294e29943c2af459fe06428264e26881d6c1288ebbc48686cc2cf467c7a SHA512 ca249262c7102e0889ec1bdc6f71a3a6f0e7e5d5fbab8abcd6fccd2871e7955eff7af5b055a76006097baf0dfaf2f5069eff3035b3107fc552abdb2481b21447
+DIST llvm-project-17.0.0rc1.src.tar.xz 127805900 BLAKE2B ab6e3b7e7af10bbb086bdd271691c259925b8047d8425b0eafb55d2c1daf637c3a56903b88e50283667955e780a47f61e7215a1e3a1acd3634c62960cf17317f SHA512 fa7ebe7fad14087861dc0eea08f68e8aa01dcc6560d70163ec38819a7fd799484f6ab1e35a69393a14962b45fa0a469c9d6c5fd2882b3609305bd01bc9f6701f
+DIST llvm-project-17.0.0rc1.src.tar.xz.sig 438 BLAKE2B 976098c616d7f01c08c5be1d76dd395950184d2c6750f3f2c14235cdf446f1d876d842b3591f827cf1157fa25c707862a374e34d61fb73afe5a7b08d6041ee4a SHA512 272e92dec1fd43819f6fafdaa7f55a975e60a1c3000a69875209b89b7f3e2d2851e32ec0f2725242479203068349aaeff8da261d998a2325a9c52733bc5d7697
 DIST llvm-project-5f1a388a11ae67c2e5d7a4d1fe45e369a393c572.tar.gz 194911977 BLAKE2B d7277591ddca0046dcc244f591732440a6c63c06557d96d18792c2544797a3bcea4af241ad1e9c0106a9751f52bfbcec0544020cc20874e8c64a31a8055d07d0 SHA512 b38aed6a21a3dd4325faf45475b843dcebab89d8ad9683e0f7699701f9645fa9467e032b822473c53a3242930d681caba9dd9530560636cf093108640470bbbe
 EBUILD llvm-libunwind-14.0.6-r1.ebuild 3161 BLAKE2B ba7b19ed2bc77b52eee0b04d938541d2eb4053b65a641e55e54ebac85adcd432fa60b2b484003890bc96be83d61410bb58c2f3a86f12a7c574044a8e10427db9 SHA512 11854f9ef2a552a96e51c618958e553d4cd4affc78312845a223d0fe6d2ff62e8f8b2b3c29ad4a093b08a6df63b230f21b9ef6b63440058322f6a00f160df3e4
 EBUILD llvm-libunwind-15.0.7.ebuild 3032 BLAKE2B 9b47e894db1a764f3eca3135f4caba68261953f4433af017b7bb53181e345ad26c570733f997022c53c9ef49a0a3b823188d92cfcc16a2113825d767b1ffab2a SHA512 0b68480fb2a8e5a351574e81fbcff824cd324754ed40378f06fec12fedbba94a921043d72db6ecc37f8b0680b7f518bbbd8d63f69ce8d84f86ca522653d293fb
 EBUILD llvm-libunwind-16.0.6.ebuild 3042 BLAKE2B c84ea3f5101ab6a468bac22a59053ecedbce4d3947fb1b0ca36d1bcc304109537ccf52fcf0f5917a6b51064efcefcefbe698d99acbf490b0c6e43b3ebbe7c3b7 SHA512 7891a63bde151a7e516e5d1ac48ffad0bfaadb41e680b36fbfdbc3c552f07290e770d2e69deab53b6718cb82570e4086bee0cb14ee60f5b6f5c4c3b3928d810e
 EBUILD llvm-libunwind-17.0.0.9999.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
 EBUILD llvm-libunwind-17.0.0_pre20230722.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
+EBUILD llvm-libunwind-17.0.0_rc1.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
 EBUILD llvm-libunwind-18.0.0.9999.ebuild 2980 BLAKE2B 84824dadd6f60390cb0c0609c06fbafef864a7106853e46617513358f239ff93ee2325e75d47d6463e1fe15f1c7e16c222468dbedae20cf8d0ac1d71bbfb29c1 SHA512 9eb7d59d4141eed7c93e8005976212cfc41b9ec455b13afd7579fefa052d798edc2c8da1ce0f8c575893073b4a97d3ba0b784bab8d480be08a923921bde34d57
 MISC metadata.xml 438 BLAKE2B 2a36fbbc59e137056029c62aef6d167d9c82531c2582d7bad5cb13cc36e5c4c9518ffe8c56d06bbcfd97ad22eda71a8b776f3984195f53d06cf45659b438dc00 SHA512 4f18b054072d00e5440faa31a59f9ef587d035b5f25e30913f0b1449debee967fa794fae2548e87db3fb2177ce853ab075e1f11f3cc763f5d7fdf06147108845
diff --git a/sys-libs/llvm-libunwind/llvm-libunwind-17.0.0_rc1.ebuild b/sys-libs/llvm-libunwind/llvm-libunwind-17.0.0_rc1.ebuild
new file mode 100644
index 000000000000..43f8868fc308
--- /dev/null
+++ b/sys-libs/llvm-libunwind/llvm-libunwind-17.0.0_rc1.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
+}