gentoo auto-resync : 30:10:2024 - 03:04:35

19 files changed, 1264 insertions, 9 deletions

diff --git a/sys-libs/Manifest.gz b/sys-libs/Manifest.gz
index 5d3e74d4c16b..83d3631ddfb0 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 02f0b7e0e80b..ed5db4b988b8 100644
--- a/sys-libs/compiler-rt-sanitizers/Manifest
+++ b/sys-libs/compiler-rt-sanitizers/Manifest
@@ -2,6 +2,7 @@ DIST llvm-gentoo-patchset-15.0.7-r6.tar.xz 25208 BLAKE2B c9fca31a053ee059c3060a9
 DIST llvm-gentoo-patchset-16.0.6-r5.tar.xz 19728 BLAKE2B 36b605401893034b2b560d26cfb57512c81eddbc35b25d9c3d1fe051b8825c38cae1b8ed999faf8fef564ca5578402d3979bc56ba0a5514dc62594d893696f41 SHA512 20a36b69dfc2b4796ce33318a28529ebdc213945ee67a983e4218117d2ee2c93be1ecb38b0e8189249c5806a442cba708e0890e1b7bf6376edec4403bcc71425
 DIST llvm-gentoo-patchset-17.0.6-r3.tar.xz 4648 BLAKE2B c709162068e83575f71a2ac2243665f47a3d42cac078daa5762bbd339d8593e8c1c5c58e2e415ba6659fe2f3c3824bd098c9be579103362084079140c0386f76 SHA512 251a33f146fcbdbe51c9e1ad7b08c2cd7d062d0b136c833cda8a5155c86080c506d575e4288cde4ba8530ca7f230c2afa63621878a8df0f23076a93c924e7d65
 DIST llvm-gentoo-patchset-18.1.8-r4.tar.xz 15912 BLAKE2B 7300128244aafe42fcf5863e3aad2beb0c96c3df527e6d35fe571369bad520ba4aa397a329287da17eb33dca902057da5cd5193ec560ea7f5767ba2d00a45818 SHA512 b32633db387d4adb3bb2d067f824ae4e8e8a24a25aaa4888520f6e61a4bb1f8f70ad5f44057fbc0892c6f93c803e360612b0fc02c4ec068470b546a55f246cba
+DIST llvm-gentoo-patchset-18.1.8-r6.tar.xz 24816 BLAKE2B a7e9e007b05205fa7adba032ba932eba1996dd7ed6cd4cfb460a731f0d2e5fda2174f46c2ee5554ca7f82297a4baddbabc7fdfbd530056471853df957c221f2f SHA512 e1666bba6678eff3ee3666818a656ba7b8f964acb8466bd220bfbf0cc2922820e84b9daaa84c3a8ed26f3160fddea63fbc13872b007eb6922eaee462c08aeaef
 DIST llvm-project-0cb80c4f00689ca00a85e1f38bc6ae9dd0bf980e.tar.gz 220327440 BLAKE2B b58d9fe8527d5849266c56400d451faff3b9138ee7d71f24d904c146dfcf05a1734e1234bab1b4035b55a9588633f05264ebf87886aab27a2a2f18a945869041 SHA512 d0d443bc4b21c9b32bd079d0538702737bb4cb4218edfdfd24164e9b14ee25d5809e7aa840f6c1bb0e3d73cd1fe59053aff041df93274fdbcf436ae57cef99ae
 DIST llvm-project-15.0.7.src.tar.xz 110936452 BLAKE2B f3d277e2029157329e5be78b78af36b0826a1dfd9a337992499bf701e33149665bfc47d5e14978e38f342559629a559f8b2ce328705ba34fdf6830f5ae9721a5 SHA512 4836d3603f32e8e54434cbfa8ef33d9d473ac5dc20ebf9c67132653c73f4524931abd1084655eaee5f20bcfcb91bcc4bbc5c4a0b603ad0c9029c556e14dc4c52
 DIST llvm-project-15.0.7.src.tar.xz.sig 566 BLAKE2B 47dc8c82d86237b80c6d85f83a6c9a6e9e174cf8e7f367b071e0cd9481d7cd408e991337c5624e07f3f370f26387c814f212808575ed1c1b58404d3e3836b7df SHA512 fc6891b440dd1175eb8df3790590af8d36bc92301660f84744ae15123475aeb900a151e6a8e7998ded27ec4d86871903ad0b89cd61164943054c2e3bc8d8beb2
@@ -13,13 +14,16 @@ DIST llvm-project-18.1.8.src.tar.xz 132067260 BLAKE2B a950492f1dbfb874dff63b1ffe
 DIST llvm-project-18.1.8.src.tar.xz.sig 566 BLAKE2B 6ab0efc5b38d4483f4e32e8b85774b2edd5d88fdf29f23b88eb0b5130a7a7f0e80549612b025f927e92de4a08ff7c292cff224dbda91a5d598244e98f7ad0fbd SHA512 ddfd1e8a06756759af6cbe488c82a6d6a62ba91f3e8a0eb4cece561321824f5d165b08ed91010588790b76e19790931d2651b24dba8567e3b151d3cb43bec25b
 DIST llvm-project-19.1.2.src.tar.xz 141241032 BLAKE2B 38a3f528ddae7cd738236a317551fdb94acd8fb736a57def15b75e1ed2f6572e1370fb3f1e4ff261d3cfb87df7d50d4db8fa9e70dc5e3dde617af09eb059fdd3 SHA512 e98ee405f5c30004b39f0de0470400dd2965adf4cda4b47a1d3792ae362ed43eb45e96a9b1689f31e1064e0b39252379270bd95bf8081cf9b92ecb9b371bf43b
 DIST llvm-project-19.1.2.src.tar.xz.sig 438 BLAKE2B f5bc0cc43bc10ee2438289d62aa8169cbb9e0ea598381b4c744e6a09daf710650fbec0656a9ac7c0e6f84a0ff3541fe223fa9efc61fb3d4c496cad9df7b9edd4 SHA512 307cd88116e68f901229fc2f6db72bad5f964bacee178e2efad3419cec277b5a7e23fb347386fb4e83e1886551bbc78d187259518193cac7654573ee17e3cb63
+DIST llvm-project-3f4468faaa9525ad615118675c3c68938f4a8d5f.tar.gz 221860252 BLAKE2B 6c531df34163dc0879c79b029a13215d1bef2cd95bbaf4a6d5e10b81a8352236283d40f14b62e23a57cc1cf8edce138fb6e2720ced2397d6469c5863564c626d SHA512 4aa485f4547e210cf8f6f8147c4adab3e75afe77f1e4e1bc4718fe681b64bdcf8937f843964542f8ead90ceef52cc0fd4bd8275824d1a4c6961eddafc7d35115
 DIST llvm-project-9aef0fd52a0b2bf31cf3bae8a0693d6df8db6e04.tar.gz 219987707 BLAKE2B a3f0acd0fd3b66c3a826ac6760653fa6ea893ffba7587cf4a14f472026a9d9d8bf6b63c26d8bc39e83936afe6b735496bd88ce6c00d16abe1d0ccd1f9a644302 SHA512 5104669d78930363afeba045dc27a4c36ca8bb7537d432c765e023cbd91155b248c3a60d4768e1f8690c88e82d4ff95a44fb73f26d25d6646dddc857992485ba
 EBUILD compiler-rt-sanitizers-15.0.7-r1.ebuild 6668 BLAKE2B aeaf6893fc56ddaf06f0b2c2d0d9a0aa465b3ccdd19cfad213d7375be9678d9e17865fa0fbb1f007492f373e231b31c7174b32a4e324c8ec8d4a207cade24fbf SHA512 8b4847e70d11ec8cee9682866940589f862fc07efd165a9a964d32648f5db3d2795b31a914f204ce568903870c555a60dbb3277aa504e92f432468db33aba00f
 EBUILD compiler-rt-sanitizers-16.0.6-r1.ebuild 6655 BLAKE2B db5371e8891181bc3652688c2bceabc28ab5bdaec5afc80415f57b7ebe13875a84a15bc309a4d1c7e5a66c9a51a79d4c6a24a140eca5f7a1c91333e15003d430 SHA512 2053df1e8c059535bb8fc3c766fbf7bce440cf508f6f22dd78e73048af629d51e7f04a0c667632a2b9f672c2b9ebe8f72de3c5886200c36bcbb7adcd16ae5d13
 EBUILD compiler-rt-sanitizers-17.0.6-r1.ebuild 6487 BLAKE2B 5083f082d2e9bc0152bd601b5702cb2d5566ed8b9cb7640503bcc02cf42d5d85ae94945aaf72899ea1ab89c2396090113286efd6157baee51d6000920c91ef10 SHA512 b61fd0bd3a2a29fb72ec4fb4f53546febbc70168951f4c0cec52c5670f0db5c009032d9911e4f78230eac91a02d9c25a6e209d5f4f7b62b0e32d51b8e04555d7
 EBUILD compiler-rt-sanitizers-18.1.8-r1.ebuild 6399 BLAKE2B 89775029b096011375f25b0c96c17ec26472e2d298673182b6a9284b1273d0f878a7d7a72e28bbb4e800434de4c248e24475edee22f5bbd26157b663ea383b97 SHA512 e3352e1b3dce27a223159cc7d7a31d9ed71944e204725acc36ee381e32ff571d5b6c6b8ce7706afaf853d96d42630ee216f0321cb173533b3cf4e15ba166e850
+EBUILD compiler-rt-sanitizers-18.1.8-r6.ebuild 6404 BLAKE2B 44eb48fd2ab90c0b2e5dabdbb4e05e79544799c8c28daa3ac4b762cfd43fba641e2f827ea51d39cc573a6f4707ec95e0559bb137f31f112135e463f6430ac812 SHA512 814e50974005572618d672aa86761977819aab9e53b3dc5cb3865717ef3dcd776f892792cb29b331531a2d2c8fceb775c6c633dfacb57ae57a59ad19455c280b
 EBUILD compiler-rt-sanitizers-19.1.2.ebuild 6479 BLAKE2B db6bd87ee4cb4be87537152c8041fb0e6bd69100e6fa4242e231c98ec1222834dd87a7b0350b42bddc6d50597919169f44d136b7a3f609407cf752f9a5ee6cff SHA512 3a992ea97ce2028d99a94adc291bf6c084af6ccb103dab7dbba43568e1283b7c4c6dfc03385b931c185eed2fc4c37563edaeff76ed3e8528c92293030121ac7e
 EBUILD compiler-rt-sanitizers-20.0.0.9999.ebuild 6394 BLAKE2B 458582b435bbd97d6fc776b1dcf653af9d41e53b0540803a3528db993eddf33284a11ec72ba7bdd2e54bbe4cf7c51e340e04970f9dc3f1f8a08edb9e5c98b9db SHA512 7f2432f6ffe217d3dcaf2185c5b08321674f1b9e5da46a2abdebebb68bccc761f0a713aa85741d9a32c29e1b54f1b12f93110146e533742265d0bb182a45501f
 EBUILD compiler-rt-sanitizers-20.0.0_pre20241015.ebuild 6394 BLAKE2B 458582b435bbd97d6fc776b1dcf653af9d41e53b0540803a3528db993eddf33284a11ec72ba7bdd2e54bbe4cf7c51e340e04970f9dc3f1f8a08edb9e5c98b9db SHA512 7f2432f6ffe217d3dcaf2185c5b08321674f1b9e5da46a2abdebebb68bccc761f0a713aa85741d9a32c29e1b54f1b12f93110146e533742265d0bb182a45501f
 EBUILD compiler-rt-sanitizers-20.0.0_pre20241023.ebuild 6394 BLAKE2B 458582b435bbd97d6fc776b1dcf653af9d41e53b0540803a3528db993eddf33284a11ec72ba7bdd2e54bbe4cf7c51e340e04970f9dc3f1f8a08edb9e5c98b9db SHA512 7f2432f6ffe217d3dcaf2185c5b08321674f1b9e5da46a2abdebebb68bccc761f0a713aa85741d9a32c29e1b54f1b12f93110146e533742265d0bb182a45501f
+EBUILD compiler-rt-sanitizers-20.0.0_pre20241029.ebuild 6394 BLAKE2B 458582b435bbd97d6fc776b1dcf653af9d41e53b0540803a3528db993eddf33284a11ec72ba7bdd2e54bbe4cf7c51e340e04970f9dc3f1f8a08edb9e5c98b9db SHA512 7f2432f6ffe217d3dcaf2185c5b08321674f1b9e5da46a2abdebebb68bccc761f0a713aa85741d9a32c29e1b54f1b12f93110146e533742265d0bb182a45501f
 MISC metadata.xml 1599 BLAKE2B 2db46fca9bbf85a6cdb70d9bc99a8e1bdc60c065b3e5f44ce31fb6cc08cc6da9037eb3155b1e73975b5e1bbb448be6b2164413f2234e89a4bc191c4562dd9342 SHA512 10bb564b181a9ce38680a05f854e58a3a726b052200d735c3959a0a42af97a47e0a5df60fbec374c7265e0eac16e1247ed0862aeab138b9dc035db8da52fb4ce
diff --git a/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-18.1.8-r6.ebuild b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-18.1.8-r6.ebuild
new file mode 100644
index 000000000000..fcff09fb2e3f
--- /dev/null
+++ b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-18.1.8-r6.ebuild
@@ -0,0 +1,221 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+inherit check-reqs cmake flag-o-matic llvm.org llvm-utils 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="~amd64 ~arm ~arm64 ~loong ~mips ~ppc64 ~riscv ~x86 ~amd64-linux ~ppc-macos ~x64-macos"
+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="
+	clang? (
+		sys-devel/clang:${LLVM_MAJOR}
+		sys-libs/compiler-rt:${LLVM_MAJOR}
+	)
+	elibc_glibc? ( net-libs/libtirpc )
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=sys-devel/clang-${LLVM_VERSION}*:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake )
+LLVM_PATCHSET=${PV}-r6
+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[${PYTHON_USEDEP}]"
+}
+
+check_space() {
+	if use test; then
+		local CHECKREQS_DISK_BUILD=11G
+		check-reqs_pkg_pretend
+	fi
+}
+
+pkg_pretend() {
+	check_space
+}
+
+pkg_setup() {
+	check_space
+	python-any-r1_pkg_setup
+}
+
+src_prepare() {
+	sed -i -e 's:-Werror::' lib/tsan/go/buildgo.sh || die
+
+	local flag
+	for flag in "${SANITIZER_FLAGS[@]}"; do
+		if ! use "${flag}"; then
+			local cmake_flag=${flag/-/_}
+			sed -i -e "/COMPILER_RT_HAS_${cmake_flag^^}/s:TRUE:FALSE:" \
+				cmake/config-ix.cmake || die
+		fi
+	done
+
+	# TODO: fix these tests to be skipped upstream
+	if use asan && ! use profile; then
+		rm test/asan/TestCases/asan_and_llvm_coverage_test.cpp || die
+	fi
+	if use ubsan && ! use cfi; then
+		> test/cfi/CMakeLists.txt || die
+	fi
+	# hangs, sigh
+	rm test/tsan/getline_nohang.cpp || die
+
+	llvm.org_src_prepare
+}
+
+src_configure() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	# 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}/$(get_libdir)/ || die
+		fi
+	fi
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+	# disable sandbox to have it stop clobbering LD_PRELOAD
+	local -x SANDBOX_ON=0
+	# wipe LD_PRELOAD to make ASAN happy
+	local -x LD_PRELOAD=
+
+	cmake_build check-all
+}
diff --git a/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-20.0.0_pre20241029.ebuild b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-20.0.0_pre20241029.ebuild
new file mode 100644
index 000000000000..59a64398c9bc
--- /dev/null
+++ b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-20.0.0_pre20241029.ebuild
@@ -0,0 +1,222 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+inherit check-reqs cmake flag-o-matic llvm.org llvm-utils python-any-r1
+
+DESCRIPTION="Compiler runtime libraries for clang (sanitizers & xray)"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="${LLVM_MAJOR}"
+IUSE="+abi_x86_32 abi_x86_64 +clang +debug test"
+# base targets
+IUSE+=" +ctx-profile +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 nsan rtsan
+)
+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="
+	clang? (
+		sys-devel/clang:${LLVM_MAJOR}
+		sys-libs/compiler-rt:${LLVM_MAJOR}
+	)
+	elibc_glibc? ( net-libs/libtirpc )
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=sys-devel/clang-${LLVM_VERSION}*:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake )
+LLVM_TEST_COMPONENTS=(
+	llvm/include/llvm/ProfileData llvm/lib/Testing/Support third-party
+)
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${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
+	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
+	# hangs, sigh
+	rm test/tsan/getline_nohang.cpp || die
+
+	llvm.org_src_prepare
+}
+
+src_configure() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${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_CTX_PROFILE=$(usex ctx-profile)
+		-DCOMPILER_RT_BUILD_LIBFUZZER=$(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 d8e8dffa5ac7..2a520a4619b4 100644
--- a/sys-libs/compiler-rt/Manifest
+++ b/sys-libs/compiler-rt/Manifest
@@ -12,6 +12,7 @@ DIST llvm-project-18.1.8.src.tar.xz 132067260 BLAKE2B a950492f1dbfb874dff63b1ffe
 DIST llvm-project-18.1.8.src.tar.xz.sig 566 BLAKE2B 6ab0efc5b38d4483f4e32e8b85774b2edd5d88fdf29f23b88eb0b5130a7a7f0e80549612b025f927e92de4a08ff7c292cff224dbda91a5d598244e98f7ad0fbd SHA512 ddfd1e8a06756759af6cbe488c82a6d6a62ba91f3e8a0eb4cece561321824f5d165b08ed91010588790b76e19790931d2651b24dba8567e3b151d3cb43bec25b
 DIST llvm-project-19.1.2.src.tar.xz 141241032 BLAKE2B 38a3f528ddae7cd738236a317551fdb94acd8fb736a57def15b75e1ed2f6572e1370fb3f1e4ff261d3cfb87df7d50d4db8fa9e70dc5e3dde617af09eb059fdd3 SHA512 e98ee405f5c30004b39f0de0470400dd2965adf4cda4b47a1d3792ae362ed43eb45e96a9b1689f31e1064e0b39252379270bd95bf8081cf9b92ecb9b371bf43b
 DIST llvm-project-19.1.2.src.tar.xz.sig 438 BLAKE2B f5bc0cc43bc10ee2438289d62aa8169cbb9e0ea598381b4c744e6a09daf710650fbec0656a9ac7c0e6f84a0ff3541fe223fa9efc61fb3d4c496cad9df7b9edd4 SHA512 307cd88116e68f901229fc2f6db72bad5f964bacee178e2efad3419cec277b5a7e23fb347386fb4e83e1886551bbc78d187259518193cac7654573ee17e3cb63
+DIST llvm-project-3f4468faaa9525ad615118675c3c68938f4a8d5f.tar.gz 221860252 BLAKE2B 6c531df34163dc0879c79b029a13215d1bef2cd95bbaf4a6d5e10b81a8352236283d40f14b62e23a57cc1cf8edce138fb6e2720ced2397d6469c5863564c626d SHA512 4aa485f4547e210cf8f6f8147c4adab3e75afe77f1e4e1bc4718fe681b64bdcf8937f843964542f8ead90ceef52cc0fd4bd8275824d1a4c6961eddafc7d35115
 DIST llvm-project-9aef0fd52a0b2bf31cf3bae8a0693d6df8db6e04.tar.gz 219987707 BLAKE2B a3f0acd0fd3b66c3a826ac6760653fa6ea893ffba7587cf4a14f472026a9d9d8bf6b63c26d8bc39e83936afe6b735496bd88ce6c00d16abe1d0ccd1f9a644302 SHA512 5104669d78930363afeba045dc27a4c36ca8bb7537d432c765e023cbd91155b248c3a60d4768e1f8690c88e82d4ff95a44fb73f26d25d6646dddc857992485ba
 EBUILD compiler-rt-15.0.7-r1.ebuild 4252 BLAKE2B 7270c3ae2a4a30b79774cd38041ee5e4381a0393be7768d56c2a59000a509e2b48336467d34ee09f8d82afbe9f453f79ddc17a2708746f89d2227b66cbfc6b01 SHA512 836e4cc58522c48d6fc40ca27efd68d18cca9914ce1810ab0b6d307bfa163b9d8b883729b917fb5ff129985ec86e5ba655587c3f93980f73e762e2bfd4ca2ab4
 EBUILD compiler-rt-16.0.6-r5.ebuild 5235 BLAKE2B 7b246061a0f3de0f07d1610329d4a7a509028de9297aca31d986a5e8deb0396d3cfe3733a7b277e794ba90959974242154b46f8de3d331869c3b74d1b4073b3d SHA512 52bf753237708227cf61a75997a5dd82d8b5847a723b950048d8d386b254d2774456e895c0335020ced7514ee4b57e8d4d3bd9c8564b467c1119ef349d7c30c3
@@ -21,4 +22,5 @@ EBUILD compiler-rt-19.1.2.ebuild 5086 BLAKE2B 73ce4892ff3df803dae4ff3f3b17ed8993
 EBUILD compiler-rt-20.0.0.9999.ebuild 4977 BLAKE2B 4a8175408e7946c688c362e4df75ea733260807de4f0bdbc371c0aaccda328e0ceae0be106b2a6cf233e1541e81b03670387940d8822121d81d11f2cf71e6be5 SHA512 5fae782e62cd6234b9d637e379299d869df2b7641f52919ee52750d92eb02a1027a13be827ed53caac33f08c111174f803cd199645aab90fda77e8710977e71b
 EBUILD compiler-rt-20.0.0_pre20241015.ebuild 4977 BLAKE2B 4a8175408e7946c688c362e4df75ea733260807de4f0bdbc371c0aaccda328e0ceae0be106b2a6cf233e1541e81b03670387940d8822121d81d11f2cf71e6be5 SHA512 5fae782e62cd6234b9d637e379299d869df2b7641f52919ee52750d92eb02a1027a13be827ed53caac33f08c111174f803cd199645aab90fda77e8710977e71b
 EBUILD compiler-rt-20.0.0_pre20241023.ebuild 4977 BLAKE2B 4a8175408e7946c688c362e4df75ea733260807de4f0bdbc371c0aaccda328e0ceae0be106b2a6cf233e1541e81b03670387940d8822121d81d11f2cf71e6be5 SHA512 5fae782e62cd6234b9d637e379299d869df2b7641f52919ee52750d92eb02a1027a13be827ed53caac33f08c111174f803cd199645aab90fda77e8710977e71b
+EBUILD compiler-rt-20.0.0_pre20241029.ebuild 4977 BLAKE2B 4a8175408e7946c688c362e4df75ea733260807de4f0bdbc371c0aaccda328e0ceae0be106b2a6cf233e1541e81b03670387940d8822121d81d11f2cf71e6be5 SHA512 5fae782e62cd6234b9d637e379299d869df2b7641f52919ee52750d92eb02a1027a13be827ed53caac33f08c111174f803cd199645aab90fda77e8710977e71b
 MISC metadata.xml 416 BLAKE2B 79a58249c94b605ba57f346c4e05b43853cf6cfb8bb65a4f4e3c44039cccfdb83dd31bfaaaf398bcbdc393efabdfc7ed186fe775976c46227e74decf2c8f4fb2 SHA512 ce30c79a575e5933effb1fec36f9a4ef02d9f97f312feb39c55a88cbda9a1bae1d7af2ec4ad5f66212cbb2cdbfb26f1a436689f16f410153c9d65eb010264c48
diff --git a/sys-libs/compiler-rt/compiler-rt-20.0.0_pre20241029.ebuild b/sys-libs/compiler-rt/compiler-rt-20.0.0_pre20241029.ebuild
new file mode 100644
index 000000000000..7642499a8792
--- /dev/null
+++ b/sys-libs/compiler-rt/compiler-rt-20.0.0_pre20241029.ebuild
@@ -0,0 +1,173 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+inherit cmake crossdev flag-o-matic llvm.org llvm-utils python-any-r1
+inherit 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}"
+IUSE="+abi_x86_32 abi_x86_64 +clang +debug test"
+RESTRICT="!test? ( test ) !clang? ( test )"
+
+DEPEND="
+	sys-devel/llvm:${LLVM_MAJOR}
+"
+BDEPEND="
+	clang? ( sys-devel/clang:${LLVM_MAJOR} )
+	test? (
+		$(python_gen_any_dep ">=dev-python/lit-15[\${PYTHON_USEDEP}]")
+		=sys-devel/clang-${LLVM_VERSION}*:${LLVM_MAJOR}
+	)
+	!test? (
+		${PYTHON_DEPS}
+	)
+"
+
+LLVM_COMPONENTS=( compiler-rt cmake llvm/cmake )
+LLVM_TEST_COMPONENTS=( llvm/include/llvm/TargetParser )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version ">=dev-python/lit-15[${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() {
+	if target_is_not_host || tc-is-cross-compiler ; then
+		# strips vars like CFLAGS="-march=x86_64-v3" for non-x86 architectures
+		CHOST=${CTARGET} strip-unsupported-flags
+		# overrides host docs otherwise
+		DOCS=()
+	fi
+	python-any-r1_pkg_setup
+}
+
+test_compiler() {
+	target_is_not_host && return
+	$(tc-getCC) ${CFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+src_configure() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	# pre-set since we need to pass it to cmake
+	BUILD_DIR=${WORKDIR}/${P}_build
+
+	if use clang && ! is_crosspkg; then
+		# Only do this conditionally to allow overriding with
+		# e.g. CC=clang-13 in case of breakage
+		if ! tc-is-clang ; then
+			local -x CC=${CHOST}-clang
+			local -x CXX=${CHOST}-clang++
+		fi
+
+		strip-unsupported-flags
+	fi
+
+	if ! is_crosspkg && ! test_compiler ; then
+		local nolib_flags=( -nodefaultlibs -lc )
+
+		if test_compiler "${nolib_flags[@]}"; then
+			local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
+			ewarn "${CC} seems to lack runtime, trying with ${nolib_flags[*]}"
+		elif test_compiler "${nolib_flags[@]}" -nostartfiles; then
+			# Avoiding -nostartfiles earlier on for bug #862540,
+			# and set available entry symbol for bug #862798.
+			nolib_flags+=( -nostartfiles -e main )
+
+			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_CTX_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_LIBFUZZER=OFF
+		-DCOMPILER_RT_BUILD_MEMPROF=OFF
+		-DCOMPILER_RT_BUILD_ORC=OFF
+		-DCOMPILER_RT_BUILD_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_SANITIZERS=OFF
+		-DCOMPILER_RT_BUILD_XRAY=OFF
+
+		-DPython3_EXECUTABLE="${PYTHON}"
+	)
+
+	if use amd64 && ! target_is_not_host; then
+		mycmakeargs+=(
+			-DCAN_TARGET_i386=$(usex abi_x86_32)
+			-DCAN_TARGET_x86_64=$(usex abi_x86_64)
+		)
+	fi
+
+	if is_crosspkg; then
+		# Needed to target built libc headers
+		export CFLAGS="${CFLAGS} -isystem /usr/${CTARGET}/usr/include"
+		mycmakeargs+=(
+			# Without this, the compiler will compile a test program
+			# and fail due to no builtins.
+			-DCMAKE_C_COMPILER_WORKS=1
+			-DCMAKE_CXX_COMPILER_WORKS=1
+
+			# Without this, compiler-rt install location is not unique
+			# to target triples, only to architecture.
+			# Needed if you want to target multiple libcs for one arch.
+			-DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON
+
+			-DCMAKE_ASM_COMPILER_TARGET="${CTARGET}"
+			-DCMAKE_C_COMPILER_TARGET="${CTARGET}"
+			-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON
+		)
+	fi
+
+	if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
+		mycmakeargs+=(
+			# setting -isysroot is disabled with compiler-rt-prefix-paths.patch
+			# this allows adding arm64 support using SDK in EPREFIX
+			-DDARWIN_macosx_CACHED_SYSROOT="${EPREFIX}/MacOSX.sdk"
+			# Set version based on the SDK in EPREFIX.
+			# This disables i386 for SDK >= 10.15
+			-DDARWIN_macosx_OVERRIDE_SDK_VERSION="$(realpath ${EPREFIX}/MacOSX.sdk | sed -e 's/.*MacOSX\(.*\)\.sdk/\1/')"
+			# Use our libtool instead of looking it up with xcrun
+			-DCMAKE_LIBTOOL="${EPREFIX}/usr/bin/${CHOST}-libtool"
+		)
+	fi
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+
+			-DCOMPILER_RT_TEST_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${EPREFIX}/usr/lib/llvm/${LLVM_MAJOR}/bin/clang++"
+		)
+	fi
+
+	cmake_src_configure
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-builtins
+}
diff --git a/sys-libs/libcap/Manifest b/sys-libs/libcap/Manifest
index be7ae5616bba..a133d4972cb4 100644
--- a/sys-libs/libcap/Manifest
+++ b/sys-libs/libcap/Manifest
@@ -1,7 +1,9 @@
 AUX libcap-2.62-ignore-RAISE_SETFCAP-install-failures.patch 724 BLAKE2B 39b2924071c9c6b1ffba3acf2fbeea6196c20da175ed4a5ddd6fac5375d604df3823bf183c36da6eb03e1b9cd918d107fd7e5b30f2f3746ce17b589a77f3dec5 SHA512 11ca33d7f1a352cce9dad179be415b6282efdbb9049a92ba945cbfbee2b6c263af39adb3a93f62e5077d9b33e0f098f9125362432bd333601345d8c3671d40bd
 DIST libcap-2.69.tar.xz 189200 BLAKE2B 94d1fef7666a1c383a8b96f1f6092bd242164631532868b628d2f5de71b42a371d041a978ef7fbadfee3eeb433165444995d1078cd790275bc0433a7875a697e SHA512 647c307dc451517da9d089495ab959b4a6fbbe41c79f4e1e9bb663569dad630ead0c2e413dfb393319e3ea14dc9848c81b392107fe3382ce1813d278c3394a7f
 DIST libcap-2.70.tar.xz 191388 BLAKE2B 77b72acee53032117ea481e3380d1b497f9264b6193b9523542508c7c3e46070248ca4ed910d35809ce6e52caa60cbb31edb125c47221627eeda35c61bd0914b SHA512 4e0bf0efeccb654c409afe9727b2b53c1d4da8190d7a0a9848fc52550ff3e13502add3eacde04a68a5b7bec09e91df487f64c5746ba987f873236a9e53b3d4e8
-EBUILD libcap-2.69-r1.ebuild 2174 BLAKE2B d98693144422803ec9916ae39b64eb75c9f7d9bbd9a888744f790e23d92484c51e41f9c7176000cce42bc803f1818257a4fceda01a72efc6e2d3cad191ec86f4 SHA512 a4f26b0b631d75ba70e924659db575ba6f86f087060945299e01cd22eebaabc8c80eb5d54dc27a712e0df98ead3a8d0ea051163bea525251781901f918349085
-EBUILD libcap-2.70.ebuild 2174 BLAKE2B d98693144422803ec9916ae39b64eb75c9f7d9bbd9a888744f790e23d92484c51e41f9c7176000cce42bc803f1818257a4fceda01a72efc6e2d3cad191ec86f4 SHA512 a4f26b0b631d75ba70e924659db575ba6f86f087060945299e01cd22eebaabc8c80eb5d54dc27a712e0df98ead3a8d0ea051163bea525251781901f918349085
-EBUILD libcap-9999.ebuild 2182 BLAKE2B 8c7c18df57ddd8d2a2c3832332fa777fc2dd70bc533a6a8c3dec243f12db767c80b54172c35a067e521f07a9a26b971908ebb51fbd4d26c35fd89f29baab6ec7 SHA512 d06793ae4f275ad88b3bac677668972a1b4936a818fe0896ac326593244935fe9f413b193616d7468c3f0b43a82c42170968d6f9cce99383b229b046502f8705
+DIST libcap-2.71.tar.xz 193512 BLAKE2B a4bc55d8b58db5d75b4615f287a15614c075f8f7e690e7a833c453658c80d6f99e633132bc8a3b8cc7d1393e513763d924bf2cbe6bc29c7a40e2a5f19755e662 SHA512 59bb6781d96776595ad3df890f4e5188380634eabbb6128f3a5307946b01cf3bd19dee8a29d3e501de1d9e1c6ed0092c4cd5adc91da227a1260c1f4356cc0bf3
+EBUILD libcap-2.69-r1.ebuild 2156 BLAKE2B b2acc2c17492048d25d4a0c76d48906ea439b61732e13b484d8dec532964f136a0f3c63c9f071e3befa4013659212b1b3fa8b0caf87e81b76d0f73c3fa4ef398 SHA512 8f7367e13684046b731f99093364777e8d289821e277f9204a006c478b1bbf4f63903d364437364b557360db73ab7bfd79502619975a2893b007a39f7f7e0783
+EBUILD libcap-2.70.ebuild 2156 BLAKE2B b2acc2c17492048d25d4a0c76d48906ea439b61732e13b484d8dec532964f136a0f3c63c9f071e3befa4013659212b1b3fa8b0caf87e81b76d0f73c3fa4ef398 SHA512 8f7367e13684046b731f99093364777e8d289821e277f9204a006c478b1bbf4f63903d364437364b557360db73ab7bfd79502619975a2893b007a39f7f7e0783
+EBUILD libcap-2.71.ebuild 2164 BLAKE2B a93f2469d68dcd19f4c4307f8021e6f7efcde0363ffb38e42d768404bb899d1606a46c228e1aa58c6e3cd8d13c6bd52a6243462069c54b125781ee7a9ad1a15e SHA512 1e9c6f5d71b8d1a2ae6aebb886c54b0a078c2036f6c69b7b1d9d7b8fd3c9be553b32214749c6235a5529e941068fd32195752a08668b916842c78a5252fcbfee
+EBUILD libcap-9999.ebuild 2164 BLAKE2B a93f2469d68dcd19f4c4307f8021e6f7efcde0363ffb38e42d768404bb899d1606a46c228e1aa58c6e3cd8d13c6bd52a6243462069c54b125781ee7a9ad1a15e SHA512 1e9c6f5d71b8d1a2ae6aebb886c54b0a078c2036f6c69b7b1d9d7b8fd3c9be553b32214749c6235a5529e941068fd32195752a08668b916842c78a5252fcbfee
 MISC metadata.xml 438 BLAKE2B b5260cc84a3fe6b992bb6218846c738af296522d7a467337c05a6240fd07fc9d6cece779bd9fcf24a11486a70874e17acae8182647d307a31cf43e1c19c3a2d3 SHA512 fa3713dcf6b7bb2ea6d4c2fdefc05e92ae345c76a6187ebcb40dab8c4ce0148650a8301f236efcb8cf53fff25730977a385578dbaa160b800159c6d6abbf37a9
diff --git a/sys-libs/libcap/libcap-2.69-r1.ebuild b/sys-libs/libcap/libcap-2.69-r1.ebuild
index 787957fa273f..735aed2e5395 100644
--- a/sys-libs/libcap/libcap-2.69-r1.ebuild
+++ b/sys-libs/libcap/libcap-2.69-r1.ebuild
@@ -17,8 +17,7 @@ fi
 DESCRIPTION="POSIX 1003.1e capabilities"
 HOMEPAGE="https://sites.google.com/site/fullycapable/"
 
-# it's available under either of the licenses
-LICENSE="|| ( GPL-2 BSD )"
+LICENSE="|| ( GPL-2 BSD ) pam? ( || ( LGPL-2+ BSD ) )"
 SLOT="0"
 IUSE="pam static-libs tools"
 
diff --git a/sys-libs/libcap/libcap-2.70.ebuild b/sys-libs/libcap/libcap-2.70.ebuild
index 787957fa273f..735aed2e5395 100644
--- a/sys-libs/libcap/libcap-2.70.ebuild
+++ b/sys-libs/libcap/libcap-2.70.ebuild
@@ -17,8 +17,7 @@ fi
 DESCRIPTION="POSIX 1003.1e capabilities"
 HOMEPAGE="https://sites.google.com/site/fullycapable/"
 
-# it's available under either of the licenses
-LICENSE="|| ( GPL-2 BSD )"
+LICENSE="|| ( GPL-2 BSD ) pam? ( || ( LGPL-2+ BSD ) )"
 SLOT="0"
 IUSE="pam static-libs tools"
 
diff --git a/sys-libs/libcap/libcap-2.71.ebuild b/sys-libs/libcap/libcap-2.71.ebuild
new file mode 100644
index 000000000000..b81da91b6121
--- /dev/null
+++ b/sys-libs/libcap/libcap-2.71.ebuild
@@ -0,0 +1,93 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit multilib-minimal toolchain-funcs pam
+
+if [[ ${PV} == *9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://git.kernel.org/pub/scm/libs/libcap/libcap.git"
+else
+	SRC_URI="https://www.kernel.org/pub/linux/libs/security/linux-privs/libcap2/${P}.tar.xz"
+
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux"
+fi
+
+DESCRIPTION="POSIX 1003.1e capabilities"
+HOMEPAGE="https://sites.google.com/site/fullycapable/"
+
+LICENSE="|| ( GPL-2 BSD ) pam? ( || ( LGPL-2+ BSD ) )"
+SLOT="0"
+IUSE="pam static-libs tools"
+
+# While the build system optionally uses gperf, we don't DEPEND on it because
+# the build automatically falls back when it's unavailable.  #604802
+PDEPEND="pam? ( sys-libs/pam[${MULTILIB_USEDEP}] )"
+DEPEND="${PDEPEND}
+	sys-kernel/linux-headers"
+BDEPEND="
+	sys-apps/diffutils
+	tools? ( dev-lang/go )"
+
+QA_FLAGS_IGNORED="sbin/captree" # go binaries don't use LDFLAGS
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-2.62-ignore-RAISE_SETFCAP-install-failures.patch
+)
+
+src_prepare() {
+	default
+	multilib_copy_sources
+}
+
+run_emake() {
+	local args=(
+		AR="$(tc-getAR)"
+		CC="$(tc-getCC)"
+		OBJCOPY="$(tc-getOBJCOPY)"
+		RANLIB="$(tc-getRANLIB)"
+		exec_prefix="${EPREFIX}"
+		lib_prefix="${EPREFIX}/usr"
+		lib="$(get_libdir)"
+		prefix="${EPREFIX}/usr"
+		PAM_CAP="$(usex pam yes no)"
+		DYNAMIC=yes
+		GOLANG="$(multilib_native_usex tools yes no)"
+	)
+	emake "${args[@]}" "$@"
+}
+
+src_configure() {
+	tc-export_build_env BUILD_CC
+	multilib-minimal_src_configure
+}
+
+multilib_src_compile() {
+	run_emake
+}
+
+multilib_src_test() {
+	run_emake test
+}
+
+multilib_src_install() {
+	# no configure, needs explicit install line #444724#c3
+	run_emake DESTDIR="${D}" install
+
+	if ! use static-libs ; then
+		rm "${ED}"/usr/$(get_libdir)/lib{cap,psx}.a || die
+	fi
+
+	# install pam plugins ourselves
+	rm -rf "${ED}"/usr/$(get_libdir)/security || die
+
+	if use pam ; then
+		dopammod pam_cap/pam_cap.so
+		dopamsecurity '' pam_cap/capability.conf
+	fi
+}
+
+multilib_src_install_all() {
+	dodoc CHANGELOG README doc/capability.md
+}
diff --git a/sys-libs/libcap/libcap-9999.ebuild b/sys-libs/libcap/libcap-9999.ebuild
index 0d484bbc425e..b81da91b6121 100644
--- a/sys-libs/libcap/libcap-9999.ebuild
+++ b/sys-libs/libcap/libcap-9999.ebuild
@@ -17,8 +17,7 @@ fi
 DESCRIPTION="POSIX 1003.1e capabilities"
 HOMEPAGE="https://sites.google.com/site/fullycapable/"
 
-# it's available under either of the licenses
-LICENSE="|| ( GPL-2 BSD )"
+LICENSE="|| ( GPL-2 BSD ) pam? ( || ( LGPL-2+ BSD ) )"
 SLOT="0"
 IUSE="pam static-libs tools"
 
diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index ae0b63bb2eda..bb6fabc16073 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -11,6 +11,7 @@ DIST llvm-project-18.1.8.src.tar.xz 132067260 BLAKE2B a950492f1dbfb874dff63b1ffe
 DIST llvm-project-18.1.8.src.tar.xz.sig 566 BLAKE2B 6ab0efc5b38d4483f4e32e8b85774b2edd5d88fdf29f23b88eb0b5130a7a7f0e80549612b025f927e92de4a08ff7c292cff224dbda91a5d598244e98f7ad0fbd SHA512 ddfd1e8a06756759af6cbe488c82a6d6a62ba91f3e8a0eb4cece561321824f5d165b08ed91010588790b76e19790931d2651b24dba8567e3b151d3cb43bec25b
 DIST llvm-project-19.1.2.src.tar.xz 141241032 BLAKE2B 38a3f528ddae7cd738236a317551fdb94acd8fb736a57def15b75e1ed2f6572e1370fb3f1e4ff261d3cfb87df7d50d4db8fa9e70dc5e3dde617af09eb059fdd3 SHA512 e98ee405f5c30004b39f0de0470400dd2965adf4cda4b47a1d3792ae362ed43eb45e96a9b1689f31e1064e0b39252379270bd95bf8081cf9b92ecb9b371bf43b
 DIST llvm-project-19.1.2.src.tar.xz.sig 438 BLAKE2B f5bc0cc43bc10ee2438289d62aa8169cbb9e0ea598381b4c744e6a09daf710650fbec0656a9ac7c0e6f84a0ff3541fe223fa9efc61fb3d4c496cad9df7b9edd4 SHA512 307cd88116e68f901229fc2f6db72bad5f964bacee178e2efad3419cec277b5a7e23fb347386fb4e83e1886551bbc78d187259518193cac7654573ee17e3cb63
+DIST llvm-project-3f4468faaa9525ad615118675c3c68938f4a8d5f.tar.gz 221860252 BLAKE2B 6c531df34163dc0879c79b029a13215d1bef2cd95bbaf4a6d5e10b81a8352236283d40f14b62e23a57cc1cf8edce138fb6e2720ced2397d6469c5863564c626d SHA512 4aa485f4547e210cf8f6f8147c4adab3e75afe77f1e4e1bc4718fe681b64bdcf8937f843964542f8ead90ceef52cc0fd4bd8275824d1a4c6961eddafc7d35115
 DIST llvm-project-9aef0fd52a0b2bf31cf3bae8a0693d6df8db6e04.tar.gz 219987707 BLAKE2B a3f0acd0fd3b66c3a826ac6760653fa6ea893ffba7587cf4a14f472026a9d9d8bf6b63c26d8bc39e83936afe6b735496bd88ce6c00d16abe1d0ccd1f9a644302 SHA512 5104669d78930363afeba045dc27a4c36ca8bb7537d432c765e023cbd91155b248c3a60d4768e1f8690c88e82d4ff95a44fb73f26d25d6646dddc857992485ba
 EBUILD libcxx-15.0.7-r1.ebuild 5283 BLAKE2B 4380fc5b851054a5ec226ee4c92a2b79511d73ac9b3f8bccc977211601eca36113fc0ae605854da53898507021f24a8b319197605c556244d84253bede7b84f4 SHA512 0a5859269422e794deb43ed960651a1dea830af28b5e395f32e28de8e67a1f399507340230af1c84248853f554e751709a60a9a78aeb0eb42804cb41907dbfce
 EBUILD libcxx-16.0.6.ebuild 5300 BLAKE2B 4714e22ad2fdcb07c62ead4cfa47fb4734e45dc055700b63a0f24cd6e93dde960c638fa16f55f4c04c6130fc2a7fa5729814c4aee12e9953f603ea5ccb706cc1 SHA512 3eab779107b5c737d971abe29b7bd9f44a73570957bd7d54d6aaa98ec78a6045d7d69272d611f7f09c60e1aa30bbad46b4bd1358b0b2c69e5bc686ab21444857
@@ -20,4 +21,5 @@ EBUILD libcxx-19.1.2.ebuild 5181 BLAKE2B dbad2e4443d758b1b2570dd2e5bf448f6fc4d8e
 EBUILD libcxx-20.0.0.9999.ebuild 5358 BLAKE2B f1653197106b3f12fa21ca3e82968e2a4b1d5376bf0c7a72ffafe28623919c85de6180de6d2bb75092de2101ddd98c07cfa1866fda15c50832802e1a712a3f60 SHA512 501844ea65ad7200b74c412e5b9298559a78859f25f01a6b963a336db5f4be4790e079f861ab749f5b87241da014958bf166695b7aa03a6e84a7bc598dd455c2
 EBUILD libcxx-20.0.0_pre20241015.ebuild 5352 BLAKE2B d9c49814193b00a3c7453c8886c8bf18b8ce1b4d2893c50421cbe1db30385991cce8cd06c9435b05b93017338bd2ab52cb8815a07c8bf9bd2cae613e15551743 SHA512 e05e0da05a7c943e27102addfdf54845e09104cb98fe3beba0bf8c007c8e8c5b23477ef0e4a9d7d88d6e67673519e48aee7686c665eb88603c7409b70be2546c
 EBUILD libcxx-20.0.0_pre20241023.ebuild 5358 BLAKE2B f1653197106b3f12fa21ca3e82968e2a4b1d5376bf0c7a72ffafe28623919c85de6180de6d2bb75092de2101ddd98c07cfa1866fda15c50832802e1a712a3f60 SHA512 501844ea65ad7200b74c412e5b9298559a78859f25f01a6b963a336db5f4be4790e079f861ab749f5b87241da014958bf166695b7aa03a6e84a7bc598dd455c2
+EBUILD libcxx-20.0.0_pre20241029.ebuild 5358 BLAKE2B f1653197106b3f12fa21ca3e82968e2a4b1d5376bf0c7a72ffafe28623919c85de6180de6d2bb75092de2101ddd98c07cfa1866fda15c50832802e1a712a3f60 SHA512 501844ea65ad7200b74c412e5b9298559a78859f25f01a6b963a336db5f4be4790e079f861ab749f5b87241da014958bf166695b7aa03a6e84a7bc598dd455c2
 MISC metadata.xml 598 BLAKE2B b7a60449e0d8e4e7605ec203dfaa45b17a265b024e21a3bcfe05a3aeb6c3d19a1d2a218cb1f9ac9ed52296f0d6e723fed251f364341fb70cbd91b747962db580 SHA512 a23f912efff52c4687767023da826ace8c6e5dcd5e69ece86aabbea99da89e48ba81cdc292f03193e2e8a05743e62ebf4d4735d038e0cc4b42714fa277569335
diff --git a/sys-libs/libcxx/libcxx-20.0.0_pre20241029.ebuild b/sys-libs/libcxx/libcxx-20.0.0_pre20241029.ebuild
new file mode 100644
index 000000000000..73b362d082dd
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-20.0.0_pre20241029.ebuild
@@ -0,0 +1,208 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+inherit cmake-multilib flag-o-matic llvm.org llvm-utils python-any-r1
+inherit 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"
+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-debug/gdb[python]
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+	)
+"
+
+LLVM_COMPONENTS=(
+	runtimes libcxx{,abi} libc 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() {
+	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() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	# note: we need to do this before multilib kicks in since it will
+	# alter the CHOST
+	local cxxabi cxxabi_incs
+	if use libcxxabi; then
+		cxxabi=system-libcxxabi
+		cxxabi_incs="${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_INSTALL_MODULES=ON
+		-DLIBCXX_USE_COMPILER_RT=${use_compiler_rt}
+		# this is broken with standalone builds, and also meaningless
+		-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
+	)
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="$(get_lit_flags)"
+			-DPython3_EXECUTABLE="${PYTHON}"
+		)
+	fi
+	cmake_src_configure
+}
+
+multilib_src_compile() {
+	cmake_src_compile
+	if [[ ${CHOST} != *-darwin* ]] ; then
+		gen_shared_ldscript
+		use static-libs && gen_static_ldscript
+	fi
+}
+
+multilib_src_test() {
+	local -x LIT_PRESERVES_TMP=1
+	cmake_build install-cxx-test-suite-prefix
+	cp "${BUILD_DIR}"/{lib,libcxx/test-suite-install/$(get_libdir)}/libc++_shared.so || die
+	if use static-libs; then
+		cp "${BUILD_DIR}"/{lib,libcxx/test-suite-install/$(get_libdir)}/libc++_static.a || die
+	fi
+	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 299977df4089..c07d4e880007 100644
--- a/sys-libs/libcxxabi/Manifest
+++ b/sys-libs/libcxxabi/Manifest
@@ -9,6 +9,7 @@ DIST llvm-project-18.1.8.src.tar.xz 132067260 BLAKE2B a950492f1dbfb874dff63b1ffe
 DIST llvm-project-18.1.8.src.tar.xz.sig 566 BLAKE2B 6ab0efc5b38d4483f4e32e8b85774b2edd5d88fdf29f23b88eb0b5130a7a7f0e80549612b025f927e92de4a08ff7c292cff224dbda91a5d598244e98f7ad0fbd SHA512 ddfd1e8a06756759af6cbe488c82a6d6a62ba91f3e8a0eb4cece561321824f5d165b08ed91010588790b76e19790931d2651b24dba8567e3b151d3cb43bec25b
 DIST llvm-project-19.1.2.src.tar.xz 141241032 BLAKE2B 38a3f528ddae7cd738236a317551fdb94acd8fb736a57def15b75e1ed2f6572e1370fb3f1e4ff261d3cfb87df7d50d4db8fa9e70dc5e3dde617af09eb059fdd3 SHA512 e98ee405f5c30004b39f0de0470400dd2965adf4cda4b47a1d3792ae362ed43eb45e96a9b1689f31e1064e0b39252379270bd95bf8081cf9b92ecb9b371bf43b
 DIST llvm-project-19.1.2.src.tar.xz.sig 438 BLAKE2B f5bc0cc43bc10ee2438289d62aa8169cbb9e0ea598381b4c744e6a09daf710650fbec0656a9ac7c0e6f84a0ff3541fe223fa9efc61fb3d4c496cad9df7b9edd4 SHA512 307cd88116e68f901229fc2f6db72bad5f964bacee178e2efad3419cec277b5a7e23fb347386fb4e83e1886551bbc78d187259518193cac7654573ee17e3cb63
+DIST llvm-project-3f4468faaa9525ad615118675c3c68938f4a8d5f.tar.gz 221860252 BLAKE2B 6c531df34163dc0879c79b029a13215d1bef2cd95bbaf4a6d5e10b81a8352236283d40f14b62e23a57cc1cf8edce138fb6e2720ced2397d6469c5863564c626d SHA512 4aa485f4547e210cf8f6f8147c4adab3e75afe77f1e4e1bc4718fe681b64bdcf8937f843964542f8ead90ceef52cc0fd4bd8275824d1a4c6961eddafc7d35115
 DIST llvm-project-9aef0fd52a0b2bf31cf3bae8a0693d6df8db6e04.tar.gz 219987707 BLAKE2B a3f0acd0fd3b66c3a826ac6760653fa6ea893ffba7587cf4a14f472026a9d9d8bf6b63c26d8bc39e83936afe6b735496bd88ce6c00d16abe1d0ccd1f9a644302 SHA512 5104669d78930363afeba045dc27a4c36ca8bb7537d432c765e023cbd91155b248c3a60d4768e1f8690c88e82d4ff95a44fb73f26d25d6646dddc857992485ba
 EBUILD libcxxabi-15.0.7.ebuild 2911 BLAKE2B 5f2004d2f68fe4eddb0b22be82d28fcca7954d0e3ad9a5510744adc4d0dfd7a1ab9fd928404adcd3eeecc58703f51117d0a80e5895b53e0ae7b71621ad5a435c SHA512 5b8e2c6abdec785649aa41b7f05ab86ecab30ff0631d6078c9b1052b406c320c5847b8f16ffa6d9e62ba4a6bca5959b18770810924d6e6da264fb08d6ff738d0
 EBUILD libcxxabi-16.0.6.ebuild 2932 BLAKE2B 837ab88ee88d5497b8bddb9f001d4b4ddd44ed982ef47114c965174135ed136abd0e3a6f3848a4aba53d0ca3748c54674cb28de8d46fda3bb7a90f326d41c7c6 SHA512 e4ebf7f35d2cad3bf3ba02754c85fee1cd1c4e52887770698ebaa3ef2fe66873f468677d307ea2d6956c2f6d3ac9b61943461193a5315f1e8a2846f2463b0581
@@ -18,4 +19,5 @@ EBUILD libcxxabi-19.1.2.ebuild 2764 BLAKE2B 279e2dedfd47b02e89b0d34b7ce17ddfcc40
 EBUILD libcxxabi-20.0.0.9999.ebuild 2663 BLAKE2B 51f73901a172d1d38eb2204428cab606794110644be1d95e542da7c80e2f88f12b1dde949f3b000a27677108922413351d7f79547101a22b14595b31f3cb9138 SHA512 3d61d2c559bcdb9d13a8134dd75dfb66b46b51eb8c3c870fa807f0dfc6298ed1582a6a3eeba732d9aac6e974e28bf5fc8efb6825654b11b0fcbb4eeaa4d40492
 EBUILD libcxxabi-20.0.0_pre20241015.ebuild 2658 BLAKE2B a111c58d16d4cf11e3c0211a4c4498862213e8c2619c62572ad50bbc805fecc3e36d0ce0b51e9b8f81f02083715c187730e721d47dedc9b0dace7c27eef59627 SHA512 1115ca8467e3ad84fc30f2517e3ebd1b9784dd2438f32df7553043e9595ca0027a4122dbd5f5311cd6287b898324c3fa9ef1f99aebabc49c414941a9633f780d
 EBUILD libcxxabi-20.0.0_pre20241023.ebuild 2663 BLAKE2B 51f73901a172d1d38eb2204428cab606794110644be1d95e542da7c80e2f88f12b1dde949f3b000a27677108922413351d7f79547101a22b14595b31f3cb9138 SHA512 3d61d2c559bcdb9d13a8134dd75dfb66b46b51eb8c3c870fa807f0dfc6298ed1582a6a3eeba732d9aac6e974e28bf5fc8efb6825654b11b0fcbb4eeaa4d40492
+EBUILD libcxxabi-20.0.0_pre20241029.ebuild 2663 BLAKE2B 51f73901a172d1d38eb2204428cab606794110644be1d95e542da7c80e2f88f12b1dde949f3b000a27677108922413351d7f79547101a22b14595b31f3cb9138 SHA512 3d61d2c559bcdb9d13a8134dd75dfb66b46b51eb8c3c870fa807f0dfc6298ed1582a6a3eeba732d9aac6e974e28bf5fc8efb6825654b11b0fcbb4eeaa4d40492
 MISC metadata.xml 438 BLAKE2B 0a830a06a53a6cdaf138ad7620fe366fae05c1c1451267d6a58caf7da5ce8f5a26d302fab53b9460920074ab5a65991d3bd24fde087809e8dc12188dd94c7676 SHA512 d53e13c497569636fb453a159c5ca5ddfabf8e5debd5f92e5149c52d54c876753842ab73293d6d08e2d9b279363b4f0c743eed3a5027a61246c6b60496be8e87
diff --git a/sys-libs/libcxxabi/libcxxabi-20.0.0_pre20241029.ebuild b/sys-libs/libcxxabi/libcxxabi-20.0.0_pre20241029.ebuild
new file mode 100644
index 000000000000..13b5d3b6c275
--- /dev/null
+++ b/sys-libs/libcxxabi/libcxxabi-20.0.0_pre20241029.ebuild
@@ -0,0 +1,109 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+inherit cmake-multilib flag-o-matic llvm.org llvm-utils python-any-r1
+inherit 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"
+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=( libc llvm/utils/llvm-lit )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+multilib_src_configure() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	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="${EPREFIX}"/usr/include
+		# this is broken with standalone builds, and also meaningless
+		-DLIBCXXABI_USE_LLVM_UNWINDER=OFF
+
+		-DLIBCXX_ENABLE_SHARED=ON
+		-DLIBCXX_ENABLE_STATIC=OFF
+		-DLIBCXX_CXX_ABI=libcxxabi
+		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+		-DLIBCXX_HAS_MUSL_LIBC=$(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 067660ff4d14..47c6d00006fa 100644
--- a/sys-libs/libomp/Manifest
+++ b/sys-libs/libomp/Manifest
@@ -10,6 +10,7 @@ DIST llvm-project-18.1.8.src.tar.xz 132067260 BLAKE2B a950492f1dbfb874dff63b1ffe
 DIST llvm-project-18.1.8.src.tar.xz.sig 566 BLAKE2B 6ab0efc5b38d4483f4e32e8b85774b2edd5d88fdf29f23b88eb0b5130a7a7f0e80549612b025f927e92de4a08ff7c292cff224dbda91a5d598244e98f7ad0fbd SHA512 ddfd1e8a06756759af6cbe488c82a6d6a62ba91f3e8a0eb4cece561321824f5d165b08ed91010588790b76e19790931d2651b24dba8567e3b151d3cb43bec25b
 DIST llvm-project-19.1.2.src.tar.xz 141241032 BLAKE2B 38a3f528ddae7cd738236a317551fdb94acd8fb736a57def15b75e1ed2f6572e1370fb3f1e4ff261d3cfb87df7d50d4db8fa9e70dc5e3dde617af09eb059fdd3 SHA512 e98ee405f5c30004b39f0de0470400dd2965adf4cda4b47a1d3792ae362ed43eb45e96a9b1689f31e1064e0b39252379270bd95bf8081cf9b92ecb9b371bf43b
 DIST llvm-project-19.1.2.src.tar.xz.sig 438 BLAKE2B f5bc0cc43bc10ee2438289d62aa8169cbb9e0ea598381b4c744e6a09daf710650fbec0656a9ac7c0e6f84a0ff3541fe223fa9efc61fb3d4c496cad9df7b9edd4 SHA512 307cd88116e68f901229fc2f6db72bad5f964bacee178e2efad3419cec277b5a7e23fb347386fb4e83e1886551bbc78d187259518193cac7654573ee17e3cb63
+DIST llvm-project-3f4468faaa9525ad615118675c3c68938f4a8d5f.tar.gz 221860252 BLAKE2B 6c531df34163dc0879c79b029a13215d1bef2cd95bbaf4a6d5e10b81a8352236283d40f14b62e23a57cc1cf8edce138fb6e2720ced2397d6469c5863564c626d SHA512 4aa485f4547e210cf8f6f8147c4adab3e75afe77f1e4e1bc4718fe681b64bdcf8937f843964542f8ead90ceef52cc0fd4bd8275824d1a4c6961eddafc7d35115
 DIST llvm-project-9aef0fd52a0b2bf31cf3bae8a0693d6df8db6e04.tar.gz 219987707 BLAKE2B a3f0acd0fd3b66c3a826ac6760653fa6ea893ffba7587cf4a14f472026a9d9d8bf6b63c26d8bc39e83936afe6b735496bd88ce6c00d16abe1d0ccd1f9a644302 SHA512 5104669d78930363afeba045dc27a4c36ca8bb7537d432c765e023cbd91155b248c3a60d4768e1f8690c88e82d4ff95a44fb73f26d25d6646dddc857992485ba
 EBUILD libomp-15.0.7-r6.ebuild 3470 BLAKE2B 9f76ca5b080ccf01617d7dcbfe3eb424c525adbcf72f2b5f09dc7bead1e28df1a0ffdf5ef47bcc7f8cac130f1d22e804e29938cda6df0ee58359ac5ff88aea86 SHA512 1a0a4b10f9a67634ea265e6df3c3f9993ed5ee3818eba2cbb6b65d8f5c3a0d2d266134f3e276985e87eca18b47a44d6de61e4c9c3496fd36c6c338dcf79b9850
 EBUILD libomp-16.0.6.ebuild 3984 BLAKE2B 8302d2776c0d8c50dcc7cac2dde8523f1abdf391d48594fdd26ebe17a089efdfee93825bdec07569878d06873b571e469411f108564df6c7eb50dc425615c255 SHA512 714da170fba4b62f3267e2530a82c583d299e8dc6c6f4037417c216c1239cc0fadc1aebf823608df37a932a7722144e67a148b58079e50560450b94c93f3e415
@@ -19,4 +20,5 @@ EBUILD libomp-19.1.2.ebuild 2248 BLAKE2B 8493ef91a33d9415c1ae604e8d65a972964b8a4
 EBUILD libomp-20.0.0.9999.ebuild 2163 BLAKE2B 522f4f9099cf7ca69f3bd2d93f1bfa0f80fd1937d8147b0464d3bcb143b161cf5b17b8e2fc80a981188a1962a3dc1396979dd726028f546ccb10b56265405415 SHA512 5ae5744e3addc95f790c15e1d89d3da4080ea0216518ece8097ac21a71432892d920722618ea3589f7bf4f70c505b5be37fa9b8c49683fd2307988b4425e7bea
 EBUILD libomp-20.0.0_pre20241015.ebuild 2163 BLAKE2B 522f4f9099cf7ca69f3bd2d93f1bfa0f80fd1937d8147b0464d3bcb143b161cf5b17b8e2fc80a981188a1962a3dc1396979dd726028f546ccb10b56265405415 SHA512 5ae5744e3addc95f790c15e1d89d3da4080ea0216518ece8097ac21a71432892d920722618ea3589f7bf4f70c505b5be37fa9b8c49683fd2307988b4425e7bea
 EBUILD libomp-20.0.0_pre20241023.ebuild 2163 BLAKE2B 522f4f9099cf7ca69f3bd2d93f1bfa0f80fd1937d8147b0464d3bcb143b161cf5b17b8e2fc80a981188a1962a3dc1396979dd726028f546ccb10b56265405415 SHA512 5ae5744e3addc95f790c15e1d89d3da4080ea0216518ece8097ac21a71432892d920722618ea3589f7bf4f70c505b5be37fa9b8c49683fd2307988b4425e7bea
+EBUILD libomp-20.0.0_pre20241029.ebuild 2163 BLAKE2B 522f4f9099cf7ca69f3bd2d93f1bfa0f80fd1937d8147b0464d3bcb143b161cf5b17b8e2fc80a981188a1962a3dc1396979dd726028f546ccb10b56265405415 SHA512 5ae5744e3addc95f790c15e1d89d3da4080ea0216518ece8097ac21a71432892d920722618ea3589f7bf4f70c505b5be37fa9b8c49683fd2307988b4425e7bea
 MISC metadata.xml 883 BLAKE2B 127e896b82a49633a6866b33ca776ebe2dd149a5d04da4484a53186f219a85db0ab9d826bc1cc61d4df9fa54c9bcc546be070a0b28985174925fd947aa09cca2 SHA512 dc32cae01401feb93eede6506b3955c766ff19b44976fcc67277559b23ac151993377daeed9ba83b2dd71dbdeea330cd1208dcb0c9c5f56be270883b31f9b15f
diff --git a/sys-libs/libomp/libomp-20.0.0_pre20241029.ebuild b/sys-libs/libomp/libomp-20.0.0_pre20241029.ebuild
new file mode 100644
index 000000000000..32b91b3699c4
--- /dev/null
+++ b/sys-libs/libomp/libomp-20.0.0_pre20241029.ebuild
@@ -0,0 +1,88 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+inherit flag-o-matic cmake-multilib linux-info llvm.org python-single-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/${LLVM_SOABI}"
+IUSE="+debug gdb-plugin hwloc ompt test"
+REQUIRED_USE="
+	gdb-plugin? ( ${PYTHON_REQUIRED_USE} )
+"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	gdb-plugin? ( ${PYTHON_DEPS} )
+	hwloc? ( >=sys-apps/hwloc-2.5:0=[${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
+	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
+
+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="${CPPFLAGS} -DNDEBUG"
+
+	local libdir="$(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)
+
+		# do not install libgomp.so & libiomp5.so aliases
+		-DLIBOMP_INSTALL_ALIASES=OFF
+		# disable unnecessary hack copying stuff back to srcdir
+		-DLIBOMP_COPY_EXPORTS=OFF
+	)
+
+	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++")"
+	)
+	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 802132b73856..a39899d71edf 100644
--- a/sys-libs/llvm-libunwind/Manifest
+++ b/sys-libs/llvm-libunwind/Manifest
@@ -9,6 +9,7 @@ DIST llvm-project-18.1.8.src.tar.xz 132067260 BLAKE2B a950492f1dbfb874dff63b1ffe
 DIST llvm-project-18.1.8.src.tar.xz.sig 566 BLAKE2B 6ab0efc5b38d4483f4e32e8b85774b2edd5d88fdf29f23b88eb0b5130a7a7f0e80549612b025f927e92de4a08ff7c292cff224dbda91a5d598244e98f7ad0fbd SHA512 ddfd1e8a06756759af6cbe488c82a6d6a62ba91f3e8a0eb4cece561321824f5d165b08ed91010588790b76e19790931d2651b24dba8567e3b151d3cb43bec25b
 DIST llvm-project-19.1.2.src.tar.xz 141241032 BLAKE2B 38a3f528ddae7cd738236a317551fdb94acd8fb736a57def15b75e1ed2f6572e1370fb3f1e4ff261d3cfb87df7d50d4db8fa9e70dc5e3dde617af09eb059fdd3 SHA512 e98ee405f5c30004b39f0de0470400dd2965adf4cda4b47a1d3792ae362ed43eb45e96a9b1689f31e1064e0b39252379270bd95bf8081cf9b92ecb9b371bf43b
 DIST llvm-project-19.1.2.src.tar.xz.sig 438 BLAKE2B f5bc0cc43bc10ee2438289d62aa8169cbb9e0ea598381b4c744e6a09daf710650fbec0656a9ac7c0e6f84a0ff3541fe223fa9efc61fb3d4c496cad9df7b9edd4 SHA512 307cd88116e68f901229fc2f6db72bad5f964bacee178e2efad3419cec277b5a7e23fb347386fb4e83e1886551bbc78d187259518193cac7654573ee17e3cb63
+DIST llvm-project-3f4468faaa9525ad615118675c3c68938f4a8d5f.tar.gz 221860252 BLAKE2B 6c531df34163dc0879c79b029a13215d1bef2cd95bbaf4a6d5e10b81a8352236283d40f14b62e23a57cc1cf8edce138fb6e2720ced2397d6469c5863564c626d SHA512 4aa485f4547e210cf8f6f8147c4adab3e75afe77f1e4e1bc4718fe681b64bdcf8937f843964542f8ead90ceef52cc0fd4bd8275824d1a4c6961eddafc7d35115
 DIST llvm-project-9aef0fd52a0b2bf31cf3bae8a0693d6df8db6e04.tar.gz 219987707 BLAKE2B a3f0acd0fd3b66c3a826ac6760653fa6ea893ffba7587cf4a14f472026a9d9d8bf6b63c26d8bc39e83936afe6b735496bd88ce6c00d16abe1d0ccd1f9a644302 SHA512 5104669d78930363afeba045dc27a4c36ca8bb7537d432c765e023cbd91155b248c3a60d4768e1f8690c88e82d4ff95a44fb73f26d25d6646dddc857992485ba
 EBUILD llvm-libunwind-15.0.7.ebuild 3032 BLAKE2B 9b47e894db1a764f3eca3135f4caba68261953f4433af017b7bb53181e345ad26c570733f997022c53c9ef49a0a3b823188d92cfcc16a2113825d767b1ffab2a SHA512 0b68480fb2a8e5a351574e81fbcff824cd324754ed40378f06fec12fedbba94a921043d72db6ecc37f8b0680b7f518bbbd8d63f69ce8d84f86ca522653d293fb
 EBUILD llvm-libunwind-16.0.6-r1.ebuild 3440 BLAKE2B eafe21a3de172043ca0039ba27c80c64d32b02cc86bdb5a6d108ded35770e0352216337cbf24ee4fde43b699a68a85c8145be2d17510d525452bfd5a02674998 SHA512 164fdc1c62405e02c035af7997b8522b51f5b9337d2bb66d7fc9b1f45df74ec70d31b26dc5324c59792d32c543fe18abf74ed3b07a64c131e3c1bb4f9f733c5d
@@ -18,4 +19,5 @@ EBUILD llvm-libunwind-19.1.2.ebuild 3413 BLAKE2B 7f510e3b4b415a4178c5783a5252adf
 EBUILD llvm-libunwind-20.0.0.9999.ebuild 3321 BLAKE2B 11e3226e8d8fd4781f2c3b9b4a40068a57fba8b0797726c88f592e69147a99bbfc78d98449daccfd0d30fd378ba8ced48d6dcd4df938fb7604d02dcee3f18f3e SHA512 9c815395dcb606b62f192c978185d88978c4f280a71c69611a1d106dcec1758b901cfd74652e2b4e4adcb944bec318de8f2aa8d32aaea3d471b43870dbf2d562
 EBUILD llvm-libunwind-20.0.0_pre20241015.ebuild 3316 BLAKE2B bd35bebb24f85df1df172da2753279735077353c2a2b06df35700ad58b32fecdb29f6045be9d3c51316e764bda2a75295fb879fd635da71747ad0ab11dc5649d SHA512 8211878d4fde53625702b27cce8bf7a09cf97238c52e1078f6895b58675f76c78aa60f8a886a2f25d0cf71becdcefd94e8666b9c8915fecbe5b47accdc9b988a
 EBUILD llvm-libunwind-20.0.0_pre20241023.ebuild 3321 BLAKE2B 11e3226e8d8fd4781f2c3b9b4a40068a57fba8b0797726c88f592e69147a99bbfc78d98449daccfd0d30fd378ba8ced48d6dcd4df938fb7604d02dcee3f18f3e SHA512 9c815395dcb606b62f192c978185d88978c4f280a71c69611a1d106dcec1758b901cfd74652e2b4e4adcb944bec318de8f2aa8d32aaea3d471b43870dbf2d562
+EBUILD llvm-libunwind-20.0.0_pre20241029.ebuild 3321 BLAKE2B 11e3226e8d8fd4781f2c3b9b4a40068a57fba8b0797726c88f592e69147a99bbfc78d98449daccfd0d30fd378ba8ced48d6dcd4df938fb7604d02dcee3f18f3e SHA512 9c815395dcb606b62f192c978185d88978c4f280a71c69611a1d106dcec1758b901cfd74652e2b4e4adcb944bec318de8f2aa8d32aaea3d471b43870dbf2d562
 MISC metadata.xml 438 BLAKE2B 2a36fbbc59e137056029c62aef6d167d9c82531c2582d7bad5cb13cc36e5c4c9518ffe8c56d06bbcfd97ad22eda71a8b776f3984195f53d06cf45659b438dc00 SHA512 4f18b054072d00e5440faa31a59f9ef587d035b5f25e30913f0b1449debee967fa794fae2548e87db3fb2177ce853ab075e1f11f3cc763f5d7fdf06147108845
diff --git a/sys-libs/llvm-libunwind/llvm-libunwind-20.0.0_pre20241029.ebuild b/sys-libs/llvm-libunwind/llvm-libunwind-20.0.0_pre20241029.ebuild
new file mode 100644
index 000000000000..f2972aaec14a
--- /dev/null
+++ b/sys-libs/llvm-libunwind/llvm-libunwind-20.0.0_pre20241029.ebuild
@@ -0,0 +1,128 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+inherit cmake-multilib flag-o-matic llvm.org llvm-utils python-any-r1
+inherit 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"
+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=( libc libcxxabi llvm/utils/llvm-lit )
+llvm.org_set_globals
+
+python_check_deps() {
+	use test || return 0
+	python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+multilib_src_configure() {
+	llvm_prepend_path "${LLVM_MAJOR}"
+
+	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
+	[[ $(tc-get-c-rtlib) == compiler-rt ]] && use_compiler_rt=ON
+
+	# Respect upstream build type assumptions (bug #910436) where they do:
+	# -DLIBUNWIND_ENABLE_ASSERTIONS=ON =>
+	#       -DCMAKE_BUILD_TYPE=DEBUG  => -UNDEBUG
+	#       -DCMAKE_BUILD_TYPE!=debug => -DNDEBUG
+	# -DLIBUNWIND_ENABLE_ASSERTIONS=OFF =>
+	#       -UNDEBUG
+	# See also https://github.com/llvm/llvm-project/issues/86#issuecomment-1649668826.
+	use debug || append-cppflags -DNDEBUG
+
+	local mycmakeargs=(
+		-DCMAKE_CXX_COMPILER_TARGET="${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
+}