17 files changed, 991 insertions, 4 deletions
diff --git a/sys-libs/Manifest.gz b/sys-libs/Manifest.gz
index 00d328616609..4693cf06b22f 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 1d6279fd4b3c..ee5255ae4d8b 100644
--- a/sys-libs/compiler-rt-sanitizers/Manifest
+++ b/sys-libs/compiler-rt-sanitizers/Manifest
@@ -6,6 +6,7 @@ DIST llvm-project-14.0.6.src.tar.xz 105618228 BLAKE2B ee67c5407df8cef493b9c0004f
 DIST llvm-project-14.0.6.src.tar.xz.sig 566 BLAKE2B cb658ad43d8ab6c43a5773aedadf0569c97b5ee4b1bd58eceb10e1879a30880c741c3d66bedd462c892309b688fb7b2673115a62d1f74d71ee375a578de9547f SHA512 b4a7b368532a7a4a24376cfa7db8f6d3478f6d4446474342fc00b474ecf466330cd0f16783209263c4c72d5fc7ddedfb11b95578842e700cfb7ee0bb34cc95d6
 DIST llvm-project-15.0.1.src.tar.xz 112068688 BLAKE2B 8fd6690445f7cbc8b47a7c1dd1f2c4fbc39f9a97f9d4a0015d466726454b090b0d1ff9b0d926eba7065e84782901687f74e6540a36dc6656a93f3c92c7bc7e06 SHA512 cef84bc173118a30db3ece5e5c6f874bf689c77afc40a4792fdcb7556555ac14a8e6de1dc811755405e5d162d63bc69abaecba30d220a42765160d69f0073fda
 DIST llvm-project-15.0.1.src.tar.xz.sig 438 BLAKE2B d8f634adab531bb19178fb27bc83b3a90c856e9402dd5af700f9af43813f68d20c21b9112dd95e9f6f10609ee51ed5aaf77edb96ca16fb93136b8aea432affd3 SHA512 cbf2570840d8dc12f6436c495a23cf9d439ee195755c01a6d1d5bcc20133599dc956dc43a0f5016698e3c9a960826f5f3c2840a73f993467e275856a67999fda
+DIST llvm-project-215c9fa4deac9ec6b4e504843830551f03b60620.tar.gz 168942763 BLAKE2B 545c7c372c38667b7d811753464e91134aae600060d9054979eab8735d535a72d6bbb33a6008dc81f3b14513f58791ca3b8c3068e62ff146ccb14f32abb41a32 SHA512 d0c244357650ef5d56bc7afd836cd747cc2cce92d5f7fb4ddec3414e5bafe4e611acb2a7ff42343c184caad14a30fa9a6ced7e493df3ceb06fe8f9445aeb5a9b
 DIST llvm-project-303526ef3aa211c1930be2885deae15eeeda3b18.tar.gz 167503164 BLAKE2B 143c72c58517b3e40ee74c1a0df47bfd0d0f9e71926bc8c39a007e674a08df95d0ffe05f523f97e4409b248349e13719cabbc7ac6938feebe702959e84a07243 SHA512 9aa5c86de6c6be1d26c085eb29ea283429e41330e937e5fdbd545bb3f5b996ac82cd6268701fcbbd202e89ee35f2b67e595fc595bb7383778e9ad5fd52ca10a0
 DIST llvmorg-13.0.1.tar.gz 147290251 BLAKE2B 2a44b012a672501761d0c27c6b3a315b69bfef0cd13b078a7e7d2fccc4a9c8c0f2bee0f164c4271c9106b0a99cb06e8b64986f66253b613336719fb86b82541b SHA512 9a8cb5d11964ba88b7624f19ec861fb28701f23956ea3c92f6ac644332d5f41fde97bd8933dd3ee70ed378058c252fa3a3887c8d1af90d219970c2b27691166f
 EBUILD compiler-rt-sanitizers-13.0.1.ebuild 6369 BLAKE2B 4e8a715cd19dd39087fe7d6cad9e30a7e130c69bde12ea382fc748cc152099607c23b75915c644785820ded954eaba31779f7c58b63a71255f9c6b610afcee7d SHA512 f5a680a5de09feecde1a3038ab185cc3b321eb2dc15b5841cd58863323fd6da727307c44127d2af5077ce2b17744ee5d3f8a17dd3bceea71b1dec2a13555dd66
@@ -14,4 +15,5 @@ EBUILD compiler-rt-sanitizers-15.0.1.ebuild 6400 BLAKE2B e5888e647efbac5b066d644
 EBUILD compiler-rt-sanitizers-15.0.2.9999.ebuild 6325 BLAKE2B 6477a9afca51d95071229d9959af18ac6afebbc1348cbb26a4a9e1253e4a40d57604f74a138b027cf3ec07bffe7e001543a356e5fc5d173e5f83fadd8e646d4e SHA512 9c553af9ff3f8ad99ef2da81a86362abcfcadcbf5407565a60be6c79f9fb89f2ae1f536f8df03cc4f3f797d8019f29d0e949dcbf82f59d2e1b1fa316d9074db2
 EBUILD compiler-rt-sanitizers-16.0.0.9999.ebuild 6325 BLAKE2B 6477a9afca51d95071229d9959af18ac6afebbc1348cbb26a4a9e1253e4a40d57604f74a138b027cf3ec07bffe7e001543a356e5fc5d173e5f83fadd8e646d4e SHA512 9c553af9ff3f8ad99ef2da81a86362abcfcadcbf5407565a60be6c79f9fb89f2ae1f536f8df03cc4f3f797d8019f29d0e949dcbf82f59d2e1b1fa316d9074db2
 EBUILD compiler-rt-sanitizers-16.0.0_pre20220918.ebuild 6325 BLAKE2B 6477a9afca51d95071229d9959af18ac6afebbc1348cbb26a4a9e1253e4a40d57604f74a138b027cf3ec07bffe7e001543a356e5fc5d173e5f83fadd8e646d4e SHA512 9c553af9ff3f8ad99ef2da81a86362abcfcadcbf5407565a60be6c79f9fb89f2ae1f536f8df03cc4f3f797d8019f29d0e949dcbf82f59d2e1b1fa316d9074db2
+EBUILD compiler-rt-sanitizers-16.0.0_pre20220930.ebuild 6325 BLAKE2B 6477a9afca51d95071229d9959af18ac6afebbc1348cbb26a4a9e1253e4a40d57604f74a138b027cf3ec07bffe7e001543a356e5fc5d173e5f83fadd8e646d4e SHA512 9c553af9ff3f8ad99ef2da81a86362abcfcadcbf5407565a60be6c79f9fb89f2ae1f536f8df03cc4f3f797d8019f29d0e949dcbf82f59d2e1b1fa316d9074db2
 MISC metadata.xml 1412 BLAKE2B 75675507000fa6a6b8182e6b45a08a2716ae7fb9a7e3428dc8420464e4c1d1bdb5bea62cc2f553c579de5a4faa752b35cb3529d980fb07a055ff4ddf6e752707 SHA512 f05ea5168b923db72f4f5b53e9b748ebbcdae9eff09d86323313055933b47fc0089e1b2d73cd997d73dcfb2dca032344955816425fbddc09d27ca751463aadbb
diff --git a/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-16.0.0_pre20220930.ebuild b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-16.0.0_pre20220930.ebuild
new file mode 100644
index 000000000000..f716dc74b423
--- /dev/null
+++ b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-16.0.0_pre20220930.ebuild
@@ -0,0 +1,220 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..11} )
+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="$(ver_cut 1-3)"
+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="
+	|| ( ${SANITIZER_FLAGS[*]} libfuzzer orc profile xray )
+	test? (
+		cfi? ( ubsan )
+		gwp-asan? ( scudo )
+	)
+"
+RESTRICT="
+	!clang? ( test )
+	!test? ( test )
+"
+
+LLVM_MAX_SLOT=${SLOT%%.*}
+DEPEND="
+	sys-devel/llvm:${LLVM_MAX_SLOT}
+	virtual/libcrypt[abi_x86_32(-)?,abi_x86_64(-)?]
+"
+BDEPEND="
+	>=dev-util/cmake-3.16
+	clang? ( sys-devel/clang )
+	elibc_glibc? ( net-libs/libtirpc )
+	test? (
+		!!<sys-apps/sandbox-2.13
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=sys-devel/clang-${PV%_*}*:${LLVM_MAX_SLOT}
+		sys-libs/compiler-rt:${SLOT}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake )
+LLVM_TEST_COMPONENTS=( llvm/lib/Testing/Support llvm/utils/unittest )
+LLVM_PATCHSET=9999-1
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${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_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="${EPREFIX}/usr/lib/clang/${SLOT}"
+		# use a build dir structure consistent with install
+		# this makes it possible to easily deploy test-friendly clang
+		-DCOMPILER_RT_OUTPUT_DIR="${BUILD_DIR}/lib/clang/${SLOT}"
+
+		-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_MAIN_SRC_DIR="${WORKDIR}/llvm"
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+
+			# they are created during src_test()
+			-DCOMPILER_RT_TEST_COMPILER="${BUILD_DIR}/lib/llvm/${LLVM_MAX_SLOT}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${BUILD_DIR}/lib/llvm/${LLVM_MAX_SLOT}/bin/clang++"
+		)
+
+		# same flags are passed for build & tests, so we need to strip
+		# them down to a subset supported by clang
+		CC=${EPREFIX}/usr/lib/llvm/${LLVM_MAX_SLOT}/bin/clang \
+		CXX=${EPREFIX}/usr/lib/llvm/${LLVM_MAX_SLOT}/bin/clang++ \
+		strip-unsupported-flags
+	fi
+
+	if use prefix && [[ "${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=( "${EPREFIX}"/usr/lib/clang/${SLOT}/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/${LLVM_MAX_SLOT}/{bin,$(get_libdir)},clang/${SLOT}/include} || die
+		cp "${EPREFIX}"/usr/lib/llvm/${LLVM_MAX_SLOT}/bin/clang{,++} \
+			"${BUILD_DIR}"/lib/llvm/${LLVM_MAX_SLOT}/bin/ || die
+		cp "${EPREFIX}"/usr/lib/clang/${SLOT}/include/*.h \
+			"${BUILD_DIR}"/lib/clang/${SLOT}/include/ || die
+		cp "${sys_dir}"/*builtins*.a \
+			"${BUILD_DIR}/lib/clang/${SLOT}/lib/${sys_dir##*/}/" || die
+		# we also need LLVMgold.so for gold-based tests
+		if [[ -f ${EPREFIX}/usr/lib/llvm/${LLVM_MAX_SLOT}/$(get_libdir)/LLVMgold.so ]]; then
+			ln -s "${EPREFIX}"/usr/lib/llvm/${LLVM_MAX_SLOT}/$(get_libdir)/LLVMgold.so \
+				"${BUILD_DIR}"/lib/llvm/${LLVM_MAX_SLOT}/$(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 197b49737353..587a97c8f64f 100644
--- a/sys-libs/compiler-rt/Manifest
+++ b/sys-libs/compiler-rt/Manifest
@@ -6,6 +6,7 @@ DIST llvm-project-14.0.6.src.tar.xz 105618228 BLAKE2B ee67c5407df8cef493b9c0004f
 DIST llvm-project-14.0.6.src.tar.xz.sig 566 BLAKE2B cb658ad43d8ab6c43a5773aedadf0569c97b5ee4b1bd58eceb10e1879a30880c741c3d66bedd462c892309b688fb7b2673115a62d1f74d71ee375a578de9547f SHA512 b4a7b368532a7a4a24376cfa7db8f6d3478f6d4446474342fc00b474ecf466330cd0f16783209263c4c72d5fc7ddedfb11b95578842e700cfb7ee0bb34cc95d6
 DIST llvm-project-15.0.1.src.tar.xz 112068688 BLAKE2B 8fd6690445f7cbc8b47a7c1dd1f2c4fbc39f9a97f9d4a0015d466726454b090b0d1ff9b0d926eba7065e84782901687f74e6540a36dc6656a93f3c92c7bc7e06 SHA512 cef84bc173118a30db3ece5e5c6f874bf689c77afc40a4792fdcb7556555ac14a8e6de1dc811755405e5d162d63bc69abaecba30d220a42765160d69f0073fda
 DIST llvm-project-15.0.1.src.tar.xz.sig 438 BLAKE2B d8f634adab531bb19178fb27bc83b3a90c856e9402dd5af700f9af43813f68d20c21b9112dd95e9f6f10609ee51ed5aaf77edb96ca16fb93136b8aea432affd3 SHA512 cbf2570840d8dc12f6436c495a23cf9d439ee195755c01a6d1d5bcc20133599dc956dc43a0f5016698e3c9a960826f5f3c2840a73f993467e275856a67999fda
+DIST llvm-project-215c9fa4deac9ec6b4e504843830551f03b60620.tar.gz 168942763 BLAKE2B 545c7c372c38667b7d811753464e91134aae600060d9054979eab8735d535a72d6bbb33a6008dc81f3b14513f58791ca3b8c3068e62ff146ccb14f32abb41a32 SHA512 d0c244357650ef5d56bc7afd836cd747cc2cce92d5f7fb4ddec3414e5bafe4e611acb2a7ff42343c184caad14a30fa9a6ced7e493df3ceb06fe8f9445aeb5a9b
 DIST llvm-project-303526ef3aa211c1930be2885deae15eeeda3b18.tar.gz 167503164 BLAKE2B 143c72c58517b3e40ee74c1a0df47bfd0d0f9e71926bc8c39a007e674a08df95d0ffe05f523f97e4409b248349e13719cabbc7ac6938feebe702959e84a07243 SHA512 9aa5c86de6c6be1d26c085eb29ea283429e41330e937e5fdbd545bb3f5b996ac82cd6268701fcbbd202e89ee35f2b67e595fc595bb7383778e9ad5fd52ca10a0
 DIST llvmorg-13.0.1.tar.gz 147290251 BLAKE2B 2a44b012a672501761d0c27c6b3a315b69bfef0cd13b078a7e7d2fccc4a9c8c0f2bee0f164c4271c9106b0a99cb06e8b64986f66253b613336719fb86b82541b SHA512 9a8cb5d11964ba88b7624f19ec861fb28701f23956ea3c92f6ac644332d5f41fde97bd8933dd3ee70ed378058c252fa3a3887c8d1af90d219970c2b27691166f
 EBUILD compiler-rt-13.0.1.ebuild 3880 BLAKE2B 83202517f413772d355aa49b5a3bd8b7000c86f6538da1a5ae96de5e84bc7536d0e639b530d1f504dc68b769565504434cc80d25426207b19283b9bc41df3388 SHA512 fe5329aee6c29d408c67af9e9891205fcdf313676780b948975f94ddce31b3f54e68cc041233c81b3005ff94f7685dcc09044f3634760d90e8c18c61f63651c3
@@ -15,4 +16,5 @@ EBUILD compiler-rt-15.0.1.ebuild 4258 BLAKE2B df62cbe91d13f12dd842ff007cd1d9e671
 EBUILD compiler-rt-15.0.2.9999.ebuild 4183 BLAKE2B dc863bb9300dbf0b109642c9e79e6cd1c836209453f5f09e94d0bdb532336f9612af25c2154abe391998b66eddc6900593734570062800635985be4fccbd5581 SHA512 6e63963e9d6f4918714d97f37c69411ad95a7c0ffe03aacc96df829c35172e46b1595505a551063789988f2956674dbc7926128a8a03804458a8baca6280ab34
 EBUILD compiler-rt-16.0.0.9999.ebuild 4183 BLAKE2B dc863bb9300dbf0b109642c9e79e6cd1c836209453f5f09e94d0bdb532336f9612af25c2154abe391998b66eddc6900593734570062800635985be4fccbd5581 SHA512 6e63963e9d6f4918714d97f37c69411ad95a7c0ffe03aacc96df829c35172e46b1595505a551063789988f2956674dbc7926128a8a03804458a8baca6280ab34
 EBUILD compiler-rt-16.0.0_pre20220918.ebuild 4183 BLAKE2B dc863bb9300dbf0b109642c9e79e6cd1c836209453f5f09e94d0bdb532336f9612af25c2154abe391998b66eddc6900593734570062800635985be4fccbd5581 SHA512 6e63963e9d6f4918714d97f37c69411ad95a7c0ffe03aacc96df829c35172e46b1595505a551063789988f2956674dbc7926128a8a03804458a8baca6280ab34
+EBUILD compiler-rt-16.0.0_pre20220930.ebuild 4183 BLAKE2B dc863bb9300dbf0b109642c9e79e6cd1c836209453f5f09e94d0bdb532336f9612af25c2154abe391998b66eddc6900593734570062800635985be4fccbd5581 SHA512 6e63963e9d6f4918714d97f37c69411ad95a7c0ffe03aacc96df829c35172e46b1595505a551063789988f2956674dbc7926128a8a03804458a8baca6280ab34
 MISC metadata.xml 416 BLAKE2B 79a58249c94b605ba57f346c4e05b43853cf6cfb8bb65a4f4e3c44039cccfdb83dd31bfaaaf398bcbdc393efabdfc7ed186fe775976c46227e74decf2c8f4fb2 SHA512 ce30c79a575e5933effb1fec36f9a4ef02d9f97f312feb39c55a88cbda9a1bae1d7af2ec4ad5f66212cbb2cdbfb26f1a436689f16f410153c9d65eb010264c48
diff --git a/sys-libs/compiler-rt/compiler-rt-16.0.0_pre20220930.ebuild b/sys-libs/compiler-rt/compiler-rt-16.0.0_pre20220930.ebuild
new file mode 100644
index 000000000000..236d4a319ccf
--- /dev/null
+++ b/sys-libs/compiler-rt/compiler-rt-16.0.0_pre20220930.ebuild
@@ -0,0 +1,151 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..11} )
+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="$(ver_cut 1-3)"
+KEYWORDS=""
+IUSE="+abi_x86_32 abi_x86_64 +clang debug test"
+RESTRICT="!test? ( test ) !clang? ( test )"
+
+LLVM_MAX_SLOT=${SLOT%%.*}
+DEPEND="
+	sys-devel/llvm:${LLVM_MAX_SLOT}
+"
+BDEPEND="
+	>=dev-util/cmake-3.16
+	clang? ( sys-devel/clang )
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=sys-devel/clang-${PV%_*}*:${LLVM_MAX_SLOT}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake )
+LLVM_PATCHSET=9999-1
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${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 dev-lang/llvm; then
+		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/${SLOT}"
+
+		-DCOMPILER_RT_INCLUDE_TESTS=$(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_MAX_SLOT}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAX_SLOT}/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 738d889b2d22..af218c12dd74 100644
--- a/sys-libs/ldb/Manifest
+++ b/sys-libs/ldb/Manifest
@@ -11,7 +11,7 @@ DIST ldb-2.6.1.tar.gz 1740497 BLAKE2B 3e831e4689297f3415928507c4c498cba937df104f
 EBUILD ldb-2.3.3.ebuild 2942 BLAKE2B d2495240018b7ecece8c88092c30ea64f411ea0f073f0ff2404ca6184fe931ada8342ea3beffd710fb0d3c137174cc01fba37d73d7884ad11edba84855f2ae08 SHA512 8711a2758689c818b66af5548af9881cf217839d5ea951cbcdbc83531ec602a9b39e1d2b12e8452e60691f09ef4e9db0d0d639e7d4a45d16cc7e75db583c714b
 EBUILD ldb-2.3.4.ebuild 3010 BLAKE2B 632921f7638af2e4b226b67daf4a8129aa939261e1f2dd9000b86be4027a2e415b532b26b1a6356c5da0d2e89eb54617e218e7aba768fab8815d2829660cf29f SHA512 23a97f3a216f9059da3e0181d5c30bd2409675ac0d18a099d6e3b1a8dacba1e9733ef33d0b7aafadd201621783adf4df8ccb6eb5206b61604c11ca6942d2cb43
 EBUILD ldb-2.4.2-r1.ebuild 3000 BLAKE2B b792c10c41f0f6aa6e05ee45fc59bfb88c7bdec2a3e6c191a374b387e9b4d169b9179fcf698e8d0856b4335dff27741e1d6873a013f298faf3e73889a7210671 SHA512 a9b6fe64a246d67c6193a2d14377a479a4dca9c851b9c183984c217dcfb32a0a5e15bf32ba5f373eb6aa2c4d106c2403f11c39123685ddd001c93072b6cb3e7b
-EBUILD ldb-2.4.4.ebuild 3067 BLAKE2B 367048331bd26f4920b2b4d6d514bfc11a4ece835eb6939ff397c47998a7d8b9f552b2297209df23dc0712ae755043c4596405af15dee84cbf090bf3d38e2ac7 SHA512 13dc06b1f368da58fdc3b920fe94d051babc57b836a08dc97edddc0b15b4e9456b41486ba54107a8201fd653c465562440758e60c82e7cc931ab4ce07ed53396
+EBUILD ldb-2.4.4.ebuild 3064 BLAKE2B ffba29c19b9de67217dae3314f2c623a1f0558047f0cada00e5e539d7d4a0a2441af1243ca1ff94479af622048a8369ae0360a58327cfe52463f6ae9092c512c SHA512 be187227fc6fe065f6c5f66ba05a83beb3b6eba5cfc410aabcf9d8580088a7012a164e67e8b33c007d7fa915b862766c914c382c41b11526cf3f71e50dccba40
 EBUILD ldb-2.5.2.ebuild 3074 BLAKE2B ca2228344bada5c0f6a2625f246adc4d276ce0bd361c66ecfa2c4efc1ff26999058abf1b372aa94443ac144ce1dc068a57d2d501dab2998c7d2b860121ee43da SHA512 6481ffaff1571d1f68db2d5d8f1d4c49fb533ff7ab0781b980226ebf2aeb31521af4caf8588fc4cb926df69d8c8f85e50af67032b1ef98f5ef0670de20e0626b
 EBUILD ldb-2.6.1.ebuild 4544 BLAKE2B d22cfccbd5938706d0c4103d8fdfcaca1b815c72e8ce5281b5558720516ba9559dab1780ccb71c9aa6cb8162d7849c9d9b0eda3ef241974529fa7c664fcb44b8 SHA512 3e43cd3373baeb6370196da88614c3551b596d79f1824685ff58e888a5aa6e4731025d374c7ae3bad89f93dc59c695e8e61d91d0794fbb1c33f85e27b0e1c6d5
 MISC metadata.xml 526 BLAKE2B 004dbbf0286ced4bcd404eb3caf091f973e67e00b9230d2399f07dcb31d93a423045b353c1813958da151cded2f52996608de1b4294e3cb90cb8da0ac8877f9f SHA512 9f8008b5b57e5f73e79df68d828f1644edb0a154fa97504c3088301aa60e6ba3ac83a2e06d55d14c06cded89196dd635598f1d767ca93398cbf9610af3b49038
diff --git a/sys-libs/ldb/ldb-2.4.4.ebuild b/sys-libs/ldb/ldb-2.4.4.ebuild
index 1b553e360e10..355275273d13 100644
--- a/sys-libs/ldb/ldb-2.4.4.ebuild
+++ b/sys-libs/ldb/ldb-2.4.4.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 ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+KEYWORDS="~alpha amd64 ~arm ~arm64 ~hppa ~ia64 ~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 89f846996f59..b31c0c5ab53e 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -4,6 +4,7 @@ DIST llvm-project-14.0.6.src.tar.xz 105618228 BLAKE2B ee67c5407df8cef493b9c0004f
 DIST llvm-project-14.0.6.src.tar.xz.sig 566 BLAKE2B cb658ad43d8ab6c43a5773aedadf0569c97b5ee4b1bd58eceb10e1879a30880c741c3d66bedd462c892309b688fb7b2673115a62d1f74d71ee375a578de9547f SHA512 b4a7b368532a7a4a24376cfa7db8f6d3478f6d4446474342fc00b474ecf466330cd0f16783209263c4c72d5fc7ddedfb11b95578842e700cfb7ee0bb34cc95d6
 DIST llvm-project-15.0.1.src.tar.xz 112068688 BLAKE2B 8fd6690445f7cbc8b47a7c1dd1f2c4fbc39f9a97f9d4a0015d466726454b090b0d1ff9b0d926eba7065e84782901687f74e6540a36dc6656a93f3c92c7bc7e06 SHA512 cef84bc173118a30db3ece5e5c6f874bf689c77afc40a4792fdcb7556555ac14a8e6de1dc811755405e5d162d63bc69abaecba30d220a42765160d69f0073fda
 DIST llvm-project-15.0.1.src.tar.xz.sig 438 BLAKE2B d8f634adab531bb19178fb27bc83b3a90c856e9402dd5af700f9af43813f68d20c21b9112dd95e9f6f10609ee51ed5aaf77edb96ca16fb93136b8aea432affd3 SHA512 cbf2570840d8dc12f6436c495a23cf9d439ee195755c01a6d1d5bcc20133599dc956dc43a0f5016698e3c9a960826f5f3c2840a73f993467e275856a67999fda
+DIST llvm-project-215c9fa4deac9ec6b4e504843830551f03b60620.tar.gz 168942763 BLAKE2B 545c7c372c38667b7d811753464e91134aae600060d9054979eab8735d535a72d6bbb33a6008dc81f3b14513f58791ca3b8c3068e62ff146ccb14f32abb41a32 SHA512 d0c244357650ef5d56bc7afd836cd747cc2cce92d5f7fb4ddec3414e5bafe4e611acb2a7ff42343c184caad14a30fa9a6ced7e493df3ceb06fe8f9445aeb5a9b
 DIST llvm-project-303526ef3aa211c1930be2885deae15eeeda3b18.tar.gz 167503164 BLAKE2B 143c72c58517b3e40ee74c1a0df47bfd0d0f9e71926bc8c39a007e674a08df95d0ffe05f523f97e4409b248349e13719cabbc7ac6938feebe702959e84a07243 SHA512 9aa5c86de6c6be1d26c085eb29ea283429e41330e937e5fdbd545bb3f5b996ac82cd6268701fcbbd202e89ee35f2b67e595fc595bb7383778e9ad5fd52ca10a0
 DIST llvmorg-13.0.1.tar.gz 147290251 BLAKE2B 2a44b012a672501761d0c27c6b3a315b69bfef0cd13b078a7e7d2fccc4a9c8c0f2bee0f164c4271c9106b0a99cb06e8b64986f66253b613336719fb86b82541b SHA512 9a8cb5d11964ba88b7624f19ec861fb28701f23956ea3c92f6ac644332d5f41fde97bd8933dd3ee70ed378058c252fa3a3887c8d1af90d219970c2b27691166f
 EBUILD libcxx-13.0.1.ebuild 6768 BLAKE2B 71b0f62e35538d718d99e3d43447f98752933868d999bf831969a6940d3a817452789c2044e9ca3bb4d5d1f0c2976fc276c4d10cb018c44e0cc6109095d9c6d6 SHA512 a12023fa135a7945e8088b34421f575cab32bb8ac53f1aeaa61bcf2a7b9fe045a6e21efba168056ef47b165ef3100e382100f910c84dee972017de6355d2e9c0
@@ -12,4 +13,5 @@ EBUILD libcxx-15.0.1.ebuild 5737 BLAKE2B ee1e8abbc711cecdc7e92d19941191fc29016ae
 EBUILD libcxx-15.0.2.9999.ebuild 5689 BLAKE2B db5070429808dfd0c9cacd0e97c8573b4691e444705b499bb598c53aacbc344c0a1b7d05573eca3d44d23cfb3e7523fe03529215ca5039985e9a6737cc12c1c3 SHA512 697802bc6e30a2609cc949a1028655e535a10c77be6ec39897f30cfb7bedd89192221510528d63ee16ee6176c6d15fcc980da0b2a380e98a186bd21c7b5276cd
 EBUILD libcxx-16.0.0.9999.ebuild 5689 BLAKE2B db5070429808dfd0c9cacd0e97c8573b4691e444705b499bb598c53aacbc344c0a1b7d05573eca3d44d23cfb3e7523fe03529215ca5039985e9a6737cc12c1c3 SHA512 697802bc6e30a2609cc949a1028655e535a10c77be6ec39897f30cfb7bedd89192221510528d63ee16ee6176c6d15fcc980da0b2a380e98a186bd21c7b5276cd
 EBUILD libcxx-16.0.0_pre20220918.ebuild 5689 BLAKE2B db5070429808dfd0c9cacd0e97c8573b4691e444705b499bb598c53aacbc344c0a1b7d05573eca3d44d23cfb3e7523fe03529215ca5039985e9a6737cc12c1c3 SHA512 697802bc6e30a2609cc949a1028655e535a10c77be6ec39897f30cfb7bedd89192221510528d63ee16ee6176c6d15fcc980da0b2a380e98a186bd21c7b5276cd
+EBUILD libcxx-16.0.0_pre20220930.ebuild 5689 BLAKE2B db5070429808dfd0c9cacd0e97c8573b4691e444705b499bb598c53aacbc344c0a1b7d05573eca3d44d23cfb3e7523fe03529215ca5039985e9a6737cc12c1c3 SHA512 697802bc6e30a2609cc949a1028655e535a10c77be6ec39897f30cfb7bedd89192221510528d63ee16ee6176c6d15fcc980da0b2a380e98a186bd21c7b5276cd
 MISC metadata.xml 828 BLAKE2B 40af456df8ac1cfdb66fd62a217abbb4ca837956529906118c35232000435d9e991d18dd0332b7b95eed70d4c7610c7a1aee80af8ba511763edc1423749a4aa4 SHA512 257f8fd05fcade26ca02305356b67c8e2d67a87b180e38a189a659212093b07b9a710b871fbaab894dba9eba5fe450b76c52cc82f6405c24cc1ab2df3abe8bfd
diff --git a/sys-libs/libcxx/libcxx-16.0.0_pre20220930.ebuild b/sys-libs/libcxx/libcxx-16.0.0_pre20220930.ebuild
new file mode 100644
index 000000000000..28c4cca66346
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-16.0.0_pre20220930.ebuild
@@ -0,0 +1,219 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..11} )
+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?,${MULTILIB_USEDEP}]
+	)
+	!libcxxabi? ( >=sys-devel/gcc-4.7:=[cxx] )
+"
+LLVM_MAX_SLOT=${PV%%.*}
+DEPEND="
+	${RDEPEND}
+	sys-devel/llvm:${LLVM_MAX_SLOT}
+"
+BDEPEND="
+	clang? (
+		sys-devel/clang:${LLVM_MAX_SLOT}
+	)
+	!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 dev-lang/llvm; then
+		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 against compiler-rt instead of libgcc if this is what clang does
+	local want_compiler_rt=OFF
+	if tc-is-clang; then
+		local compiler_rt=$($(tc-getCC) ${CFLAGS} ${CPPFLAGS} \
+			${LDFLAGS} -print-libgcc-file-name)
+		if [[ ${compiler_rt} == *libclang_rt* ]]; then
+			want_compiler_rt=ON
+		fi
+	fi
+
+	# bootstrap: cmake is unhappy if compiler can't link to stdlib
+	local nolib_flags=( -nodefaultlibs -lc )
+	if ! test_compiler; then
+		if test_compiler "${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=${want_compiler_rt}
+	)
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${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
+}
+
+pkg_postinst() {
+	elog "This package (${PN}) is mainly intended as a replacement for the C++"
+	elog "standard library when using clang."
+	elog "To use it, instead of libstdc++, use:"
+	elog "    clang++ -stdlib=libc++"
+	elog "to compile your C++ programs."
+}
diff --git a/sys-libs/libcxxabi/Manifest b/sys-libs/libcxxabi/Manifest
index 15578a423526..1eee21230150 100644
--- a/sys-libs/libcxxabi/Manifest
+++ b/sys-libs/libcxxabi/Manifest
@@ -2,6 +2,7 @@ DIST llvm-project-14.0.6.src.tar.xz 105618228 BLAKE2B ee67c5407df8cef493b9c0004f
 DIST llvm-project-14.0.6.src.tar.xz.sig 566 BLAKE2B cb658ad43d8ab6c43a5773aedadf0569c97b5ee4b1bd58eceb10e1879a30880c741c3d66bedd462c892309b688fb7b2673115a62d1f74d71ee375a578de9547f SHA512 b4a7b368532a7a4a24376cfa7db8f6d3478f6d4446474342fc00b474ecf466330cd0f16783209263c4c72d5fc7ddedfb11b95578842e700cfb7ee0bb34cc95d6
 DIST llvm-project-15.0.1.src.tar.xz 112068688 BLAKE2B 8fd6690445f7cbc8b47a7c1dd1f2c4fbc39f9a97f9d4a0015d466726454b090b0d1ff9b0d926eba7065e84782901687f74e6540a36dc6656a93f3c92c7bc7e06 SHA512 cef84bc173118a30db3ece5e5c6f874bf689c77afc40a4792fdcb7556555ac14a8e6de1dc811755405e5d162d63bc69abaecba30d220a42765160d69f0073fda
 DIST llvm-project-15.0.1.src.tar.xz.sig 438 BLAKE2B d8f634adab531bb19178fb27bc83b3a90c856e9402dd5af700f9af43813f68d20c21b9112dd95e9f6f10609ee51ed5aaf77edb96ca16fb93136b8aea432affd3 SHA512 cbf2570840d8dc12f6436c495a23cf9d439ee195755c01a6d1d5bcc20133599dc956dc43a0f5016698e3c9a960826f5f3c2840a73f993467e275856a67999fda
+DIST llvm-project-215c9fa4deac9ec6b4e504843830551f03b60620.tar.gz 168942763 BLAKE2B 545c7c372c38667b7d811753464e91134aae600060d9054979eab8735d535a72d6bbb33a6008dc81f3b14513f58791ca3b8c3068e62ff146ccb14f32abb41a32 SHA512 d0c244357650ef5d56bc7afd836cd747cc2cce92d5f7fb4ddec3414e5bafe4e611acb2a7ff42343c184caad14a30fa9a6ced7e493df3ceb06fe8f9445aeb5a9b
 DIST llvm-project-303526ef3aa211c1930be2885deae15eeeda3b18.tar.gz 167503164 BLAKE2B 143c72c58517b3e40ee74c1a0df47bfd0d0f9e71926bc8c39a007e674a08df95d0ffe05f523f97e4409b248349e13719cabbc7ac6938feebe702959e84a07243 SHA512 9aa5c86de6c6be1d26c085eb29ea283429e41330e937e5fdbd545bb3f5b996ac82cd6268701fcbbd202e89ee35f2b67e595fc595bb7383778e9ad5fd52ca10a0
 DIST llvmorg-13.0.1.tar.gz 147290251 BLAKE2B 2a44b012a672501761d0c27c6b3a315b69bfef0cd13b078a7e7d2fccc4a9c8c0f2bee0f164c4271c9106b0a99cb06e8b64986f66253b613336719fb86b82541b SHA512 9a8cb5d11964ba88b7624f19ec861fb28701f23956ea3c92f6ac644332d5f41fde97bd8933dd3ee70ed378058c252fa3a3887c8d1af90d219970c2b27691166f
 EBUILD libcxxabi-13.0.1.ebuild 3593 BLAKE2B 2e8717a8dadf431dc4360e4cee5d74875153f375f241388e3cc47410c9ecf4c97f2641c276927a99c6643460bbd1f7bddae72b06e7994e162cc1e7f3fd5e4fbe SHA512 4c943fe5483f94329e3f9390c8ddeaf89dc168220696fd5eb00692e7458d6ff92d3b37343bd6de23df70eea814243aee75bc8d75681ecb944a66cf37562fbdf7
@@ -10,4 +11,5 @@ EBUILD libcxxabi-15.0.1.ebuild 3106 BLAKE2B e5058971c3a8b58ea39aa5d09d885e437698
 EBUILD libcxxabi-15.0.2.9999.ebuild 3058 BLAKE2B 89bf6165d8e93a22e3cccb88f2760d82bd31a286b37ae341af23546ae7863b599285967f6bce31dcea1ac74572fcc046de2407c404198ec086384d22b994e6b8 SHA512 03b9133bfbbfbae4df5163196f3125cf35c8b90b6e447b2f3ca3c26f6d24705a0f05a0b24a2fc670ebaa4bbbdcca46852a374f6729f20822b880dd7f773163bb
 EBUILD libcxxabi-16.0.0.9999.ebuild 3058 BLAKE2B 89bf6165d8e93a22e3cccb88f2760d82bd31a286b37ae341af23546ae7863b599285967f6bce31dcea1ac74572fcc046de2407c404198ec086384d22b994e6b8 SHA512 03b9133bfbbfbae4df5163196f3125cf35c8b90b6e447b2f3ca3c26f6d24705a0f05a0b24a2fc670ebaa4bbbdcca46852a374f6729f20822b880dd7f773163bb
 EBUILD libcxxabi-16.0.0_pre20220918.ebuild 3058 BLAKE2B 89bf6165d8e93a22e3cccb88f2760d82bd31a286b37ae341af23546ae7863b599285967f6bce31dcea1ac74572fcc046de2407c404198ec086384d22b994e6b8 SHA512 03b9133bfbbfbae4df5163196f3125cf35c8b90b6e447b2f3ca3c26f6d24705a0f05a0b24a2fc670ebaa4bbbdcca46852a374f6729f20822b880dd7f773163bb
+EBUILD libcxxabi-16.0.0_pre20220930.ebuild 3058 BLAKE2B 89bf6165d8e93a22e3cccb88f2760d82bd31a286b37ae341af23546ae7863b599285967f6bce31dcea1ac74572fcc046de2407c404198ec086384d22b994e6b8 SHA512 03b9133bfbbfbae4df5163196f3125cf35c8b90b6e447b2f3ca3c26f6d24705a0f05a0b24a2fc670ebaa4bbbdcca46852a374f6729f20822b880dd7f773163bb
 MISC metadata.xml 557 BLAKE2B 4f6b0acb7cfdf74971a6fd96051d9f9020141c6117333a8de42bd043935b7bff8d9942faabdf3b1c94597c460393f64eb7d3f7b7d49f39ecfd0094de460f563e SHA512 67a812ef768e681ae77ef6e13bccffcbe53b41e94901f0558b3c7acaf896605ca670c4bb5a690bd9afa3b5a76271341710520a6abc0024c18f437fabde20e847
diff --git a/sys-libs/libcxxabi/libcxxabi-16.0.0_pre20220930.ebuild b/sys-libs/libcxxabi/libcxxabi-16.0.0_pre20220930.ebuild
new file mode 100644
index 000000000000..78be4b5b862f
--- /dev/null
+++ b/sys-libs/libcxxabi/libcxxabi-16.0.0_pre20220930.ebuild
@@ -0,0 +1,123 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..11} )
+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
+"
+LLVM_MAX_SLOT=${PV%%.*}
+DEPEND="
+	${RDEPEND}
+	sys-devel/llvm:${LLVM_MAX_SLOT}
+"
+BDEPEND="
+	clang? (
+		sys-devel/clang:${LLVM_MAX_SLOT}
+	)
+	!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 [[ ${CHOST} != *-darwin* ]] || has_version dev-lang/llvm; then
+		llvm_pkg_setup
+	fi
+	python-any-r1_pkg_setup
+}
+
+multilib_src_configure() {
+	if use clang; then
+		local -x CC=${CHOST}-clang
+		local -x CXX=${CHOST}-clang++
+		strip-unsupported-flags
+	fi
+
+	# link against compiler-rt instead of libgcc if this is what clang does
+	local want_compiler_rt=OFF
+	if tc-is-clang; then
+		local compiler_rt=$($(tc-getCC) ${CFLAGS} ${CPPFLAGS} \
+			${LDFLAGS} -print-libgcc-file-name)
+		if [[ ${compiler_rt} == *libclang_rt* ]]; then
+			want_compiler_rt=ON
+		fi
+	fi
+
+	local libdir=$(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=$(usex test)
+		-DLIBCXXABI_USE_COMPILER_RT=${want_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 0194e4b085d1..906edeef2e19 100644
--- a/sys-libs/libomp/Manifest
+++ b/sys-libs/libomp/Manifest
@@ -4,6 +4,7 @@ DIST llvm-project-14.0.6.src.tar.xz 105618228 BLAKE2B ee67c5407df8cef493b9c0004f
 DIST llvm-project-14.0.6.src.tar.xz.sig 566 BLAKE2B cb658ad43d8ab6c43a5773aedadf0569c97b5ee4b1bd58eceb10e1879a30880c741c3d66bedd462c892309b688fb7b2673115a62d1f74d71ee375a578de9547f SHA512 b4a7b368532a7a4a24376cfa7db8f6d3478f6d4446474342fc00b474ecf466330cd0f16783209263c4c72d5fc7ddedfb11b95578842e700cfb7ee0bb34cc95d6
 DIST llvm-project-15.0.1.src.tar.xz 112068688 BLAKE2B 8fd6690445f7cbc8b47a7c1dd1f2c4fbc39f9a97f9d4a0015d466726454b090b0d1ff9b0d926eba7065e84782901687f74e6540a36dc6656a93f3c92c7bc7e06 SHA512 cef84bc173118a30db3ece5e5c6f874bf689c77afc40a4792fdcb7556555ac14a8e6de1dc811755405e5d162d63bc69abaecba30d220a42765160d69f0073fda
 DIST llvm-project-15.0.1.src.tar.xz.sig 438 BLAKE2B d8f634adab531bb19178fb27bc83b3a90c856e9402dd5af700f9af43813f68d20c21b9112dd95e9f6f10609ee51ed5aaf77edb96ca16fb93136b8aea432affd3 SHA512 cbf2570840d8dc12f6436c495a23cf9d439ee195755c01a6d1d5bcc20133599dc956dc43a0f5016698e3c9a960826f5f3c2840a73f993467e275856a67999fda
+DIST llvm-project-215c9fa4deac9ec6b4e504843830551f03b60620.tar.gz 168942763 BLAKE2B 545c7c372c38667b7d811753464e91134aae600060d9054979eab8735d535a72d6bbb33a6008dc81f3b14513f58791ca3b8c3068e62ff146ccb14f32abb41a32 SHA512 d0c244357650ef5d56bc7afd836cd747cc2cce92d5f7fb4ddec3414e5bafe4e611acb2a7ff42343c184caad14a30fa9a6ced7e493df3ceb06fe8f9445aeb5a9b
 DIST llvm-project-303526ef3aa211c1930be2885deae15eeeda3b18.tar.gz 167503164 BLAKE2B 143c72c58517b3e40ee74c1a0df47bfd0d0f9e71926bc8c39a007e674a08df95d0ffe05f523f97e4409b248349e13719cabbc7ac6938feebe702959e84a07243 SHA512 9aa5c86de6c6be1d26c085eb29ea283429e41330e937e5fdbd545bb3f5b996ac82cd6268701fcbbd202e89ee35f2b67e595fc595bb7383778e9ad5fd52ca10a0
 DIST llvmorg-13.0.1.tar.gz 147290251 BLAKE2B 2a44b012a672501761d0c27c6b3a315b69bfef0cd13b078a7e7d2fccc4a9c8c0f2bee0f164c4271c9106b0a99cb06e8b64986f66253b613336719fb86b82541b SHA512 9a8cb5d11964ba88b7624f19ec861fb28701f23956ea3c92f6ac644332d5f41fde97bd8933dd3ee70ed378058c252fa3a3887c8d1af90d219970c2b27691166f
 EBUILD libomp-13.0.1.ebuild 3907 BLAKE2B 46ed471cb355b70f78b59faeffbcc5148d47a3b971818c831e7b155f4f0973238fdbfb5f2fa91913fef93e01beed45f42b1158af92e56cd8445c4a8157508bb7 SHA512 13f150c5223689e4d98e16cafa11e44164b177eb68d3df213582b85c5194e7f736143b49b2075f4178689efcfa8320e2b1faf34242c09dbfcda923b443d42741
@@ -12,4 +13,5 @@ EBUILD libomp-15.0.1.ebuild 3387 BLAKE2B c61c0fc5f15d2743dadada477d545632aa2f9fc
 EBUILD libomp-15.0.2.9999.ebuild 3321 BLAKE2B 72941bd52ea34f2393fe8d0759c24f005e71e0755ee47e50638eb96a02faf9f2624c6517657d27922a4e0ebf35a36e6893b8250d0081246c9921e6183dc1d15b SHA512 b086900cfd5cb8d557a2a84607021b5c2942a4a15db8b6883525db14f6909f7243f568c970f4cd0e3c9b02e9ac9f3271bd7403edbc499f826ebcd6a426406c13
 EBUILD libomp-16.0.0.9999.ebuild 3410 BLAKE2B e7ea68de80926ebed3b72c3be5632f117a53c94217265daddfbe41bde90727630a8944ce37ed7b6dcfcd512c73ef02373a0bbc864987ff4ed3ab256415409a64 SHA512 04160d125a402579092d31eb8836c0b4733948f24f0bb328eb40bf60a9dad986816615ed9e01df505c1d8d2f88be5ab3e1ec2dbf2c50e6e0e0de73c70330adfd
 EBUILD libomp-16.0.0_pre20220918.ebuild 3410 BLAKE2B e7ea68de80926ebed3b72c3be5632f117a53c94217265daddfbe41bde90727630a8944ce37ed7b6dcfcd512c73ef02373a0bbc864987ff4ed3ab256415409a64 SHA512 04160d125a402579092d31eb8836c0b4733948f24f0bb328eb40bf60a9dad986816615ed9e01df505c1d8d2f88be5ab3e1ec2dbf2c50e6e0e0de73c70330adfd
+EBUILD libomp-16.0.0_pre20220930.ebuild 3410 BLAKE2B e7ea68de80926ebed3b72c3be5632f117a53c94217265daddfbe41bde90727630a8944ce37ed7b6dcfcd512c73ef02373a0bbc864987ff4ed3ab256415409a64 SHA512 04160d125a402579092d31eb8836c0b4733948f24f0bb328eb40bf60a9dad986816615ed9e01df505c1d8d2f88be5ab3e1ec2dbf2c50e6e0e0de73c70330adfd
 MISC metadata.xml 908 BLAKE2B c200fb1c93ae8fbd3963b2b575586fbe8f6df2308a2babbe3da77c2cf59c3fa43f938849d47df2ef4acf381f247848c363a20cf33ad763be169764cbe43c4bb4 SHA512 3cde603a2de523c21fbf288d459d76c697f2291d3dc3dac47e70781a910b4d524442d3076d8541818f2d43c3c6477af75d5f0cb76c4fbe0b4567a11d67edb056
diff --git a/sys-libs/libomp/libomp-16.0.0_pre20220930.ebuild b/sys-libs/libomp/libomp-16.0.0_pre20220930.ebuild
new file mode 100644
index 000000000000..7cff82c5f737
--- /dev/null
+++ b/sys-libs/libomp/libomp-16.0.0_pre20220930.ebuild
@@ -0,0 +1,133 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..11} )
+inherit flag-o-matic cmake-multilib linux-info llvm llvm.org python-any-r1
+
+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"
+KEYWORDS=""
+IUSE="
+	debug hwloc offload ompt test
+	llvm_targets_AMDGPU llvm_targets_NVPTX
+"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	hwloc? ( >=sys-apps/hwloc-2.5:0=[${MULTILIB_USEDEP}] )
+	offload? (
+		virtual/libelf:=[${MULTILIB_USEDEP}]
+		dev-libs/libffi:=[${MULTILIB_USEDEP}]
+		~sys-devel/llvm-${PV}[${MULTILIB_USEDEP}]
+	)
+"
+# 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? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+		sys-devel/clang
+	)
+"
+
+LLVM_COMPONENTS=( openmp cmake llvm/include )
+llvm.org_set_globals
+
+python_check_deps() {
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+kernel_pds_check() {
+	if use kernel_linux && kernel_is -lt 4 15 && kernel_is -ge 4 13; then
+		local CONFIG_CHECK="~!SCHED_PDS"
+		local ERROR_SCHED_PDS="\
+PDS scheduler versions >= 0.98c < 0.98i (e.g. used in kernels >= 4.13-pf11
+< 4.14-pf9) do not implement sched_yield() call which may result in horrible
+performance problems with libomp. If you are using one of the specified
+kernel versions, you may want to disable the PDS scheduler."
+
+		check_extra_config
+	fi
+}
+
+pkg_pretend() {
+	kernel_pds_check
+}
+
+pkg_setup() {
+	use offload && LLVM_MAX_SLOT=${PV%%.*} llvm_pkg_setup
+	use test && python-any-r1_pkg_setup
+}
+
+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="${CPPFLAGS} -DNDEBUG"
+
+	local libdir="$(get_libdir)"
+	local mycmakeargs=(
+		-DOPENMP_LIBDIR_SUFFIX="${libdir#lib}"
+
+		-DLIBOMP_USE_HWLOC=$(usex hwloc)
+		-DLIBOMP_OMPT_SUPPORT=$(usex ompt)
+
+		-DOPENMP_ENABLE_LIBOMPTARGET=$(usex offload)
+
+		# do not install libgomp.so & libiomp5.so aliases
+		-DLIBOMP_INSTALL_ALIASES=OFF
+		# disable unnecessary hack copying stuff back to srcdir
+		-DLIBOMP_COPY_EXPORTS=OFF
+		# disable until upstream fixes it to use positive logic
+		-DDISABLE_OMPD_GDB_PLUGIN=ON
+	)
+
+	if use offload; 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 f3c46feb57ad..93ee2aaa48c6 100644
--- a/sys-libs/llvm-libunwind/Manifest
+++ b/sys-libs/llvm-libunwind/Manifest
@@ -3,6 +3,7 @@ DIST llvm-project-14.0.6.src.tar.xz 105618228 BLAKE2B ee67c5407df8cef493b9c0004f
 DIST llvm-project-14.0.6.src.tar.xz.sig 566 BLAKE2B cb658ad43d8ab6c43a5773aedadf0569c97b5ee4b1bd58eceb10e1879a30880c741c3d66bedd462c892309b688fb7b2673115a62d1f74d71ee375a578de9547f SHA512 b4a7b368532a7a4a24376cfa7db8f6d3478f6d4446474342fc00b474ecf466330cd0f16783209263c4c72d5fc7ddedfb11b95578842e700cfb7ee0bb34cc95d6
 DIST llvm-project-15.0.1.src.tar.xz 112068688 BLAKE2B 8fd6690445f7cbc8b47a7c1dd1f2c4fbc39f9a97f9d4a0015d466726454b090b0d1ff9b0d926eba7065e84782901687f74e6540a36dc6656a93f3c92c7bc7e06 SHA512 cef84bc173118a30db3ece5e5c6f874bf689c77afc40a4792fdcb7556555ac14a8e6de1dc811755405e5d162d63bc69abaecba30d220a42765160d69f0073fda
 DIST llvm-project-15.0.1.src.tar.xz.sig 438 BLAKE2B d8f634adab531bb19178fb27bc83b3a90c856e9402dd5af700f9af43813f68d20c21b9112dd95e9f6f10609ee51ed5aaf77edb96ca16fb93136b8aea432affd3 SHA512 cbf2570840d8dc12f6436c495a23cf9d439ee195755c01a6d1d5bcc20133599dc956dc43a0f5016698e3c9a960826f5f3c2840a73f993467e275856a67999fda
+DIST llvm-project-215c9fa4deac9ec6b4e504843830551f03b60620.tar.gz 168942763 BLAKE2B 545c7c372c38667b7d811753464e91134aae600060d9054979eab8735d535a72d6bbb33a6008dc81f3b14513f58791ca3b8c3068e62ff146ccb14f32abb41a32 SHA512 d0c244357650ef5d56bc7afd836cd747cc2cce92d5f7fb4ddec3414e5bafe4e611acb2a7ff42343c184caad14a30fa9a6ced7e493df3ceb06fe8f9445aeb5a9b
 DIST llvm-project-303526ef3aa211c1930be2885deae15eeeda3b18.tar.gz 167503164 BLAKE2B 143c72c58517b3e40ee74c1a0df47bfd0d0f9e71926bc8c39a007e674a08df95d0ffe05f523f97e4409b248349e13719cabbc7ac6938feebe702959e84a07243 SHA512 9aa5c86de6c6be1d26c085eb29ea283429e41330e937e5fdbd545bb3f5b996ac82cd6268701fcbbd202e89ee35f2b67e595fc595bb7383778e9ad5fd52ca10a0
 DIST llvmorg-13.0.1.tar.gz 147290251 BLAKE2B 2a44b012a672501761d0c27c6b3a315b69bfef0cd13b078a7e7d2fccc4a9c8c0f2bee0f164c4271c9106b0a99cb06e8b64986f66253b613336719fb86b82541b SHA512 9a8cb5d11964ba88b7624f19ec861fb28701f23956ea3c92f6ac644332d5f41fde97bd8933dd3ee70ed378058c252fa3a3887c8d1af90d219970c2b27691166f
 EBUILD llvm-libunwind-13.0.1-r1.ebuild 3912 BLAKE2B 4d66504181497e9234ce0192dc75d68dd89652739f5b40f4ce5a6bac927b128be1f45feb0e960650d06fb4086592b6833f51972b77e908c525cf5257b88e3908 SHA512 70ca5f5567e654c33524b459f000dba8aa9b93c0b108ad88bd3eed3d7154904e6c775d54a0d9245d9f41d6229ae42a74ed6ed6728e31e94feae253106f463e53
@@ -11,4 +12,5 @@ EBUILD llvm-libunwind-15.0.1.ebuild 3180 BLAKE2B 795d5d2954ce760102453b4d2d81274
 EBUILD llvm-libunwind-15.0.2.9999.ebuild 3120 BLAKE2B 1c57bdc94602d5243a0aec800112545a97c111d80747b398ac1ee7f67751009069c390c11c3cc43613dcbbe83d127eee5d08e6702fbc966ea70b5a7e94ad0730 SHA512 6900401066b73cc3f4f709c12f7350d4bf7d0d680b17ceb9c01c475fcf00ef576c16e47545c2f802409862862cf5741dcca609fd187d25b4c39baf39c6567fd0
 EBUILD llvm-libunwind-16.0.0.9999.ebuild 3120 BLAKE2B 1c57bdc94602d5243a0aec800112545a97c111d80747b398ac1ee7f67751009069c390c11c3cc43613dcbbe83d127eee5d08e6702fbc966ea70b5a7e94ad0730 SHA512 6900401066b73cc3f4f709c12f7350d4bf7d0d680b17ceb9c01c475fcf00ef576c16e47545c2f802409862862cf5741dcca609fd187d25b4c39baf39c6567fd0
 EBUILD llvm-libunwind-16.0.0_pre20220918.ebuild 3120 BLAKE2B 1c57bdc94602d5243a0aec800112545a97c111d80747b398ac1ee7f67751009069c390c11c3cc43613dcbbe83d127eee5d08e6702fbc966ea70b5a7e94ad0730 SHA512 6900401066b73cc3f4f709c12f7350d4bf7d0d680b17ceb9c01c475fcf00ef576c16e47545c2f802409862862cf5741dcca609fd187d25b4c39baf39c6567fd0
+EBUILD llvm-libunwind-16.0.0_pre20220930.ebuild 3084 BLAKE2B 64af0ccfe2b63946dfeeb5fcdec9079a9427ca14021148ec3e2046088e237cadf5cd41df9f4157184b85c62e2d27eb1834159b534de03d7c6e8818b523f18a69 SHA512 f70f31cdd0267aaa6d33b21734df86343257913ea61f1a5d52996e048a1ade2e59696e347f01c3c48fbfcde815ea8c135239a7ca29d9896d1c653f2e659b360a
 MISC metadata.xml 438 BLAKE2B 2a36fbbc59e137056029c62aef6d167d9c82531c2582d7bad5cb13cc36e5c4c9518ffe8c56d06bbcfd97ad22eda71a8b776f3984195f53d06cf45659b438dc00 SHA512 4f18b054072d00e5440faa31a59f9ef587d035b5f25e30913f0b1449debee967fa794fae2548e87db3fb2177ce853ab075e1f11f3cc763f5d7fdf06147108845
diff --git a/sys-libs/llvm-libunwind/llvm-libunwind-16.0.0_pre20220930.ebuild b/sys-libs/llvm-libunwind/llvm-libunwind-16.0.0_pre20220930.ebuild
new file mode 100644
index 000000000000..71139d2b5fda
--- /dev/null
+++ b/sys-libs/llvm-libunwind/llvm-libunwind-16.0.0_pre20220930.ebuild
@@ -0,0 +1,129 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{8..11} )
+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
+"
+LLVM_MAX_SLOT=${PV%%.*}
+DEPEND="
+	sys-devel/llvm:${LLVM_MAX_SLOT}
+"
+BDEPEND="
+	clang? (
+		sys-devel/clang:${LLVM_MAX_SLOT}
+	)
+	!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[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	llvm_pkg_setup
+	python-any-r1_pkg_setup
+}
+
+multilib_src_configure() {
+	local use_compiler_rt=OFF
+	local libdir=$(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
+	if tc-is-clang; then
+		local compiler_rt=$($(tc-getCC) ${CFLAGS} ${CPPFLAGS} \
+		   ${LD_FLAGS} -print-libgcc-file-name)
+		if [[ ${compiler_rt} == *libclang_rt* ]]; then
+			use_compiler_rt=ON
+		fi
+	fi
+
+	local mycmakeargs=(
+		-DCMAKE_CXX_COMPILER_TARGET="${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=$(usex test)
+		-DLIBUNWIND_INSTALL_HEADERS=ON
+
+		# temporarily disabled due to upstream regression
+		-DLIBUNWIND_ENABLE_CROSS_UNWINDING=OFF
+
+		# avoid dependency on libgcc_s if compiler-rt is used
+		-DLIBUNWIND_USE_COMPILER_RT=${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
+}
diff --git a/sys-libs/tevent/Manifest b/sys-libs/tevent/Manifest
index 7cdd28c12ffc..4a2f334b3c88 100644
--- a/sys-libs/tevent/Manifest
+++ b/sys-libs/tevent/Manifest
@@ -5,6 +5,6 @@ DIST tevent-0.12.1.tar.gz 879683 BLAKE2B 51521aa26dc3ac38dcf69cdb77a7ad33fede889
 DIST tevent-0.13.0.tar.gz 880601 BLAKE2B 4e2a2c055bac28cecae1a95b7ddab349ed780f44427e74709eca497d6242bc4f46a91878d3d253c1af4819887ce7df522fe41f88f6059ec5f6c706c7e071ee35 SHA512 7aa05c09e3c708769e31cda88b319cee3629c88c51bda559193a85d4ab32204a8b4ba11f142861dbca06b578bf54953f2aca1ad847e99995a4fc40bf08618a93
 EBUILD tevent-0.10.2.ebuild 1591 BLAKE2B 63043bf0d721a46e303bc72f1166470068f57582ea529f8cdcf0dae3228b681c0649d20dab279f0e3a46c85c9ba755ba95bdf3944abd951899715f1c46a504ae SHA512 768d207948ac5a27d1ca62b108e3ee4d91f849b2f887596b469e5338e9e00050d34d518b8adc4e1283f1db9f88e519813dc7aced6df94449b784965fe72c5992
 EBUILD tevent-0.11.0.ebuild 1672 BLAKE2B 876840924440fc319c04b0ff51d9cc50fedeaefea973d3117da5ea039e817f61a42f8f4fd1b986594b026ee485927375047c16bf53be0098f1b6133b43ecd7f3 SHA512 f01a7ccb816617fbdd4ea46ee7d99a40b02dadca8759c9c36985cdadce309adec81a1ae47b8cc019a58e661983ecaa179805941e637bc04262401e68fc15040b
-EBUILD tevent-0.12.1.ebuild 1657 BLAKE2B aa598e63b28bca73cefa1f7bf714aecdf7112d8564d4db1744a9e94d7de6182c6138615615c2c194367e69b3e5295ce54be6c11d81fabfb4ba27559b306a5567 SHA512 a41d02eccb1f6d4fdd0c3e79f4b7b97574ca3d6ac0cb78c6e57e01e70b4054cec9289212a38322b79a44f74bd36402dcccf203d02aefb746693174063d275228
+EBUILD tevent-0.12.1.ebuild 1649 BLAKE2B 7e3bcebc08be11247675653d052219691c823d3835ccfd218e601de42dc2bff30940a3e382b937ac93c6e438a50083b60b0d3c352f5ac8a96de2fe0a43c67372 SHA512 561c7d4c2116d5206b66c3f66652fb7da9ebf95f8c571ea4b04e10e03a729c2301e351af830b2d941d5cb868949f85fdfe3cad6277814b434792dee49b1936f5
 EBUILD tevent-0.13.0.ebuild 2460 BLAKE2B 89de60b58ef750de474dd8613cd4704c8daa49cbd3c32c28fd7871bdb2a12b5b97902f43395902def90118a0a4ea5fecbf95ae6fdabf070c3ca3e62520cdeecb SHA512 63904502d0faa08a93f2116e08d97b7941387a350d3f4ffe6a6587613afe74d349ffd56ecbc77239f51bac668a6a9e98e0c3e4f1a1d27f0730f77178df658185
 MISC metadata.xml 239 BLAKE2B 7127a2a67e79dc98a78fcaca706fd348389c7f08465112215855afe5978d2932ecbee93944efb1df528fbb6d09e884b277cb1d55a8b3926487b6ca07f9330b8a SHA512 4ea42efe4d083d013b85796ca25a132678bcefe6e3687fd6dd371814fd307118fbc8da8c15ce7f4d956e5f824cd0202f49d3469406c88008e84ff9f4d360f424
diff --git a/sys-libs/tevent/tevent-0.12.1.ebuild b/sys-libs/tevent/tevent-0.12.1.ebuild
index 487aad5cf6f6..adb7238df026 100644
--- a/sys-libs/tevent/tevent-0.12.1.ebuild
+++ b/sys-libs/tevent/tevent-0.12.1.ebuild
@@ -13,7 +13,7 @@ SRC_URI="https://samba.org/ftp/tevent/${P}.tar.gz"
 
 LICENSE="GPL-3"
 SLOT="0"
-KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~x86-linux"
+KEYWORDS="~alpha amd64 arm arm64 hppa ~ia64 ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 sparc x86 ~x86-linux"
 IUSE="python"
 
 REQUIRED_USE="${PYTHON_REQUIRED_USE}"