gentoo resync : 29.08.2018

17 files changed, 895 insertions, 8 deletions

diff --git a/sys-libs/Manifest.gz b/sys-libs/Manifest.gz
index fd84ea49b7ec..42b50759e63f 100644
--- a/sys-libs/Manifest.gz
+++ b/sys-libs/Manifest.gz
diff --git a/sys-libs/binutils-libs/Manifest b/sys-libs/binutils-libs/Manifest
index ec3ee4ab799d..31cc7a39f247 100644
--- a/sys-libs/binutils-libs/Manifest
+++ b/sys-libs/binutils-libs/Manifest
@@ -9,7 +9,7 @@ DIST binutils-2.29.1.tar.bz2 29123355 BLAKE2B 83de518a27bae0f13c57b1979493dd7f7c
 DIST binutils-2.30-patches-2.tar.xz 490272 BLAKE2B a28a5b5bb8faa33fec269f2c69d6ed0e4e7d5a9169861aa4b3c45511794e1e749c216862a8258c2029f1b40c511dcb2a0aeaecda57e75d52418f10d6f345718f SHA512 1686d5b58ee968f2000647acab2bee4c263d1c85fd43fed8c820fccfc0d7024a01211e7853cd5ce452fa90da500bc17309edf6dbc901c7fd6fc7b3e3d6f42581
 DIST binutils-2.30-patches-3.tar.xz 548804 BLAKE2B 428a1750233ae3f019e20cb5ed1d8e6fe6455181e8f5961dbfe7b66493d1c42050f889e45c02c1fc1a84d545c9e61f81ad6ffd5afc0b1099a702ccc7637c3abe SHA512 c91e902d1d9fc2e9782df04c93173c3207c771f1c063e2ff12c9336593c954ea3f1b2474a8fc045927d72fe18f7401874059599d100c4a1fd152081f05913d03
 DIST binutils-2.30.tar.xz 20286700 BLAKE2B 2dd5436a15a601011a1950e6082ec00082f5916fb82ce95ceab424fd8dc19f6daa7ac32a149f222ccdcc603354165cc206fde070eaa44fe2cc5e57486efc7868 SHA512 e747ea20d8d79fcd21b9d9f6695059caa7189d60f19256da398e34b789fea9a133c32b192e9693b5828d27683739b0198431bf8b3e39fb3b04884cf89d9aa839
-DIST binutils-2.31.1-patches-1.tar.xz 10644 BLAKE2B 3c2e09713593fc01d78d45ee4e4ac92020d5de781325c8ea98a5193a36a2a0a814f1b6730ae718ad92f92c5876e8e47d0eee7c42d2fce281cc0b37fadb85c42b SHA512 d701e6e2c9d22ca5c7ac4bf08d9206a6648b299b7b04a053aaabc34fa94d7c5fd074a08e3f3af66365069918d9000986c646430bf2adf94213cbf0d55d6e6c51
+DIST binutils-2.31.1-patches-2.tar.xz 11232 BLAKE2B b8ac65872017c063650d4e04855efa3fd3e9faa566e81fa9fb3ae777c1337627023c1af85b708a7933b577a69652451ff488340d7cc9f035d3a3a655da0fc8d6 SHA512 2d0ee2e727586fc39cdb8abc7251c12dd350d18dd84103ddacc08978db48d45445c05b7ea5f095842f6e0350db94d593270b23a38920a01ca59c363decaa2a58
 DIST binutils-2.31.1.tar.xz 20467996 BLAKE2B 6b914df1fbb7cf54f2159f71b2c2b09f3f6a569b7a3cb4cf9790d0a3733a7548bc0ea32334a178ed3b56e8b97656ae99c7abaf212601beeaeae9a0884c0f6051 SHA512 0fca326feb1d5f5fe505a827b20237fe3ec9c13eaf7ec7e35847fd71184f605ba1cefe1314b1b8f8a29c0aa9d88162849ee1c1a3e70c2f7407d88339b17edb30
 EBUILD binutils-libs-2.25.1-r2.ebuild 2725 BLAKE2B a4fe58fe79272a65c7703b3be801bd8ef197119cbb06b964a107b80eb7c3f38a65e2bb5de69a12b1eb939e04334c7767898d9adf6b853f622dfbb843fc3b7039 SHA512 8c610d03d282e72507e055fac6a3edb9b0fea10dda1934099a7b9b6577d90ce808c803ffc3e6b7378071bfa6d3fd8e1d6919031448d0d12bf86bd37dcbe4e53e
 EBUILD binutils-libs-2.27.ebuild 2847 BLAKE2B 3d02dfccc46d3398646d338e01f096de36a74fdf6d224a8ae221120fe8105cc674ed09840b01d84994ff11c4f73c88b39737b3ff484d32dbfb1183f20eb3a1a4 SHA512 629aeca9ec392f957fbbe7f2a3d5564016d096b7cbe63ef9337351e599722bced4c3eb190d8dd0f091eb3ff816e839b03f7a7662f22f9e22b36ef3e8e5bb93ae
@@ -17,5 +17,5 @@ EBUILD binutils-libs-2.28.1.ebuild 2872 BLAKE2B f0ef199dfc0025b06dbdab74f76f0a17
 EBUILD binutils-libs-2.29.1-r1.ebuild 2921 BLAKE2B f38060716462c9c51bc84b98348b82952b6bb47cd33136d7eaaca822ba6e40504fad2b0c778a4a02989ca9e20f812d928d718295376141dd02e519e541a605a3 SHA512 8fc849244e3cdb9b1a35e9bed1f2e57e8bba210e6ab9aa7408904b5a04cc532dfff52a9840e866df5985f6b1d05c96ce7549c7514389a8dae9a4d5d798d48c8e
 EBUILD binutils-libs-2.30-r2.ebuild 3200 BLAKE2B 124abad02ef385d313034760d84c58a93ac7eb0eafab6692867a07474b5d95dd21caf1bd01c4b2c58958b8e6f992a15ec7b05fd65ccf5f24da15f6a4e271e4f6 SHA512 0ff4afe328164c8280f4a8deb18028b8a0022100ff8eb627770da8da4f8772e6f6469deb5ef9cae95cb89a513eb4ac69a81a6dac0a185b1bad70af5a77280479
 EBUILD binutils-libs-2.30-r3.ebuild 3211 BLAKE2B 7715a2ba111df9c62f3b00998ecb7d2b6d9aa42273195488fd121ea3f0d52554a7dd1a98e138d5b9870becfe9038ba57da8254c84720f5768af60822113386b8 SHA512 f08ecc65cb4ec222ae651ecb9fce48ebe2503ffb18204fb3183f18e802485721937e41f9140b54d56068bfa69468261d32aacaeffe595feb8788bcc837795c39
-EBUILD binutils-libs-2.31.1.ebuild 3096 BLAKE2B 4f78b6eae723baeeff4da9d4bbc7c130b444a3629639d2a5e7226b5d4c3cb4a89308464e6d9565f161767c24020a674f60ea3791e631792e7e2f600a19c18104 SHA512 373ceca15f0b73fcab25092baae2295d3e9e216d839719809a3e5d43633f1f0163cd36a2c6beeac122bf0831df2c73508596490a4ed274885089f63c997fb4b7
+EBUILD binutils-libs-2.31.1.ebuild 3093 BLAKE2B da00f2d3a3d3d53fffd02f1d0236b6d8f2c5b184001d7ed47e5c91ae06b524e9f9b2cd85a3ce6877de9be609a75b784db0da2413bb4cabec626abe291b072939 SHA512 762534285aa25b69e981fc50a22baeb882ce758f9e62e42eda20612041aaf7fb04b89699979659850224b5d1403523a74c8f14db0360f12b012b596aeb66872e
 MISC metadata.xml 524 BLAKE2B 6f00793b2dc155b19d816b8acfd49e6bfc2ae35418ecc97fbbd3f9d0ed08b5f95a299b28fe6edad1a66f4d64abe99dc8a62a974fd70e28b535cd366239bf1cca SHA512 9db7c7a3082ee848ec4963831da06cced596d543e53660747fb56ac33998c219e1d7252892ffc32132d7db3c99ce9746fb6d9e85f866c3cba97552c31948342c
diff --git a/sys-libs/binutils-libs/binutils-libs-2.31.1.ebuild b/sys-libs/binutils-libs/binutils-libs-2.31.1.ebuild
index 415d289b8642..be5ead46558d 100644
--- a/sys-libs/binutils-libs/binutils-libs-2.31.1.ebuild
+++ b/sys-libs/binutils-libs/binutils-libs-2.31.1.ebuild
@@ -3,14 +3,14 @@
 
 EAPI=6
 
-PATCH_VER=1
+PATCH_VER=2
 
 inherit eutils toolchain-funcs multilib-minimal
 
 MY_PN="binutils"
 MY_P="${MY_PN}-${PV}"
 PATCH_BINUTILS_VER=${PATCH_BINUTILS_VER:-${PV}}
-PATCH_DEV=${PATCH_DEV:-dilfridge}
+PATCH_DEV=${PATCH_DEV:-slyfox}
 
 DESCRIPTION="Core binutils libraries (libbfd, libopcodes, libiberty) for external packages"
 HOMEPAGE="https://sourceware.org/binutils/"
diff --git a/sys-libs/compiler-rt-sanitizers/Manifest b/sys-libs/compiler-rt-sanitizers/Manifest
index a9b051750e16..93c3f47ee199 100644
--- a/sys-libs/compiler-rt-sanitizers/Manifest
+++ b/sys-libs/compiler-rt-sanitizers/Manifest
@@ -1,14 +1,17 @@
 DIST compiler-rt-4.0.1.src.tar.xz 1434100 BLAKE2B ca6bf78fc07f387b7244a52ef648b06a5685effb46a66b241a9ee847ecafb17d02602f49b0dbe473d47202586874a043a6d75141400062f526d2f808da323e1e SHA512 cfeb625884b273f7c0e6767b81a8d3e5f24e0b96a510d5764d9d47a0e215fc841b4cb9d1843c8fb428cd21def720cfbfe8d3593ff5bb390548ebc8c32a902649
 DIST compiler-rt-5.0.2.src.tar.xz 1543256 BLAKE2B 09fa84b8f3e9b8627a14387bc6eaa3d6b4588b9c8f1ac5a0114135fd830e3d45922408b237866789eb81bf38defde1186e0f7430a69f825bee12776b7cd9f74e SHA512 605a6d064877a860d6c9097e0220896dfceafed0a2392ad495c97aa347b97899d89f7e21932e29d3274f396615837414a3e730a915fe4f53eaa858ce3642a666
 DIST compiler-rt-6.0.1.src.tar.xz 1686820 BLAKE2B 59fa3f6e478bd4d6dfa056c85dcdc4349cbce7cea7fc56519feddc9d66c88c9ca48bad7967432ceb81d754213577f12707035afd827cf630a58627575b73b798 SHA512 69850c1ad92c66977fa217cbfb42a6a3f502fbe3d1a08daa7fc4cfeb617a7736d231f8ad8d93b10b1ae29bd753315d2a2d70f9ff1f4d18a9a7cc81758d91f963
+DIST compiler-rt-7.0.0rc2.src.tar.xz 1817604 BLAKE2B 27a0ab220eb40a50db6f2782f1faf249c21b79c71447d88d4dcd04653c77516ecc832a8e53ea9a3e6f5b2d3c0115ab325101f94b53987a520fc92899adff0f79 SHA512 e41c849e2d6e6786d5aa74872cbfa9774cd3bef003c1fcba91d8bebb6d4df55b3f161cb059fa124e74ca5e16f2c856e95359bedb8a18ec124da79897523266f7
 DIST compiler-rt-sanitizers-4.0.1-patchset.tar.xz 2384 BLAKE2B 6f9eee711c83570767f0bb634d0f91c18ee7f2af93a478938b8d5b6ce6f2c2fbaadb7bd5c7ee94a14dc1834359a046187db6bc7005b7c2efa539325dc0701ad9 SHA512 72d7357b4c27bbf8fa8b34803ddea905a9f1054e8fc7bf99a4ead9dc00408989ea2709f04be9cf45a27eeb4b9386c89feeb25b53a84f3cac9739196b89813887
 DIST compiler-rt-sanitizers-6.0.1-patchset.tar.xz 8820 BLAKE2B d53ca357e060d058c7f20c51e74684f4c032fdf3ccec4c9f227dc7a5757206f331b9eda25a72c5c66faf4c44b2cc63eb439bd21bdd55d37a93918ab428fd7cd4 SHA512 782a34c56134bd061da30c1f598ddb9e90cb34a4e4ef058fa9634f6da372fd8693ff5e6cf98b59700942273240f83052b89ee2736b22f4e19bc8b519fbec8cad
 DIST llvm-4.0.1.src.tar.xz 21065652 BLAKE2B 6327eed2d1feb108440f22d2581d1ff86c10a10c29793538d8d899c7e2dc83d3f7b147d3fd4bcce2bd2bf57c071b08c624aeafe40a3e7a3914506e7751727e6c SHA512 16adc39b34ddb628f81b171119a8e2a0e9138b25011e803ef0b688e2fbea116fc4953d3a1b61b90a98a75e33619f81566b7cb06a9a2ea4d04ac5e0eb303a2d1d
 DIST llvm-5.0.2.src.tar.xz 23451868 BLAKE2B b7082be2e4ad557b29b9f6869811f262adcf5c73d552faf91b339bede75cf5eab58afefa12fa779a38be71fe2b8f4ea297c3213ee4e8370cc01972c59249d91c SHA512 3588be5ed969c3f7f6f16f56a12a6af2814d3d3c960d4a36ffebb0446cc75f19220bccee7fc605f9b01f5d5c188a905a046193cc12dec42dd5922048b5c27fe1
 DIST llvm-6.0.1.src.tar.xz 25306628 BLAKE2B 60232d4d22f8096b565cc8d81fea0639f24f14e8fc4f66ade69fa15479181f07f655f26dff3fa24bf105762b495da316c5c9352db234bd0af6b9c3fff6d4d881 SHA512 cbbb00eb99cfeb4aff623ee1a5ba075e7b5a76fc00c5f9f539ff28c108598f5708a0369d5bd92683def5a20c2fe60cab7827b42d628dbfcc79b57e0e91b84dd9
+DIST llvm-7.0.0rc2.src.tar.xz 28320756 BLAKE2B 92707da30fe73a6dec2614acceada06560332d3b54edeae5047543f23808cf13b24aecc9c853ccbc3341951e1fbceff85509465aa6207275fc54c75f94baff55 SHA512 4211fdbd2278ed325d3f6a1f1fa706351e768e2cd1445abf6664bed39b7b5d0c5e04514711d627f9ae1e271300f410635bb54ba004a5bece0d68450d3a1b52e4
 EBUILD compiler-rt-sanitizers-4.0.1.ebuild 4778 BLAKE2B 5689080c9783d288206a9a7f4d8cee487ef73a951d95baf7083719c89239b299a7cb71361e060876a7564701c353a857e9a640ff5e8f5054d76c6ede66523b5e SHA512 937fab2e9791bd122005469704e5cbbc8907d0f52cb277d779bd93451178e49c8f369be0dec5bff22338a7ed3920f0e125337e9ede02c957c123f968b69ec442
 EBUILD compiler-rt-sanitizers-5.0.2.ebuild 5095 BLAKE2B 0f3348e8800d24d01231b2460025eb83a3211c44fd2987a0b0d4361372fe4af5695a131886d55029459121e8952e394c526120f12212d20a8a5c995847a04cb0 SHA512 cf13df0bad1be887c621c16f12639e385fff395985007b17a1bf14b00f0dd9dfd609e83287fc890f105d2bd586b3457b1efe3b6f687096a205b1a96f3fd1139e
 EBUILD compiler-rt-sanitizers-6.0.1.ebuild 5248 BLAKE2B 02cd036059dc9a038a440dfc356f4b5a9d7bf2ec68790d95d391f05ec62404ecbcf422082d005a9b6a23f16e2500bdcb3bd606f2f5bc53ee04cfe3724caa0771 SHA512 22527b482c1e8fe80273de88e4bcef4fbdba7000149ab31e63fab6bd8b75587eed5ac5b01aaf1c257decfb9af96b3256f19dc462ca84ee5cbf40655328851337
+EBUILD compiler-rt-sanitizers-7.0.0_rc2.ebuild 5249 BLAKE2B 78e44391fafec066838519e5be36c97f2688913b6c06f53b36e280406ce5919df0145e3d78ff909aefb1f2ba7fcce9148e37513036a0138395b5e0588b0aa49a SHA512 5f618e32b8d1e15ae31e4f1ddaf2bb4ebd7b738737dd571d56674f2e7ebb35461c72420844925aac5630086a2ec4487318120a26375880fca083e3ed84c950e9
 EBUILD compiler-rt-sanitizers-7.0.9999.ebuild 4872 BLAKE2B 22d029bcbc59f49a261bce0cec4604c6c33c4e2da9bb6ca219f7b0d929f676788e098bce5af5b6960ce7af0fa6289b23766722f513e2ddd63974d6c22bd935a8 SHA512 869c47cfd1594daf4ec2afbb51344dbb9122e26f28f91cfbaa5e703d18463fa82295bd27964b42ecee755e19fa4a63b4028954b185dd9e0d3bf15f6644d1d321
 EBUILD compiler-rt-sanitizers-9999.ebuild 4847 BLAKE2B c7e291629e46ec963053524f9a1b69c8c8e007825c5fd56d07ccfd913ba68edf4d5e233fd6167626f8ac136982d357e517f228710327660e419bf19eb7b80136 SHA512 b2352d00b4947a51635e73ce1f54efe898d043d468b7c7550db707c94ae8e9e6aee4f37f25f9a12530be7d9334846c75be40d6298bbfe94638a0074cfdd97c51
 MISC metadata.xml 333 BLAKE2B 24e417cb7b8ab7730b18a3e1e5e29d008042e4fd53cf1ba3cc9d18719160b0410854ddfae52315c690138e61fb0196015968fa09b98af6470cd8bdecc09205ef SHA512 97daa7452a696b7297c47f5f637a33425f82b51426060a75b3de6bc812f9ddcd3c70ae068bc3e88ce937ab1eb10d59b0ab48a2d2c0397a112b8b6a754e333bdc
diff --git a/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-7.0.0_rc2.ebuild b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-7.0.0_rc2.ebuild
new file mode 100644
index 000000000000..f606ef2f383e
--- /dev/null
+++ b/sys-libs/compiler-rt-sanitizers/compiler-rt-sanitizers-7.0.0_rc2.ebuild
@@ -0,0 +1,176 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
+# (needed due to CMAKE_BUILD_TYPE != Gentoo)
+CMAKE_MIN_VERSION=3.7.0-r1
+PYTHON_COMPAT=( python2_7 )
+
+inherit check-reqs cmake-utils flag-o-matic llvm \
+	multiprocessing python-any-r1
+
+MY_P=compiler-rt-${PV/_/}.src
+LLVM_P=llvm-${PV/_/}.src
+
+DESCRIPTION="Compiler runtime libraries for clang (sanitizers & xray)"
+HOMEPAGE="https://llvm.org/"
+SRC_URI="https://prereleases.llvm.org/${PV/_//}/${MY_P}.tar.xz
+	https://dev.gentoo.org/~mgorny/dist/llvm/${PN}-6.0.1-patchset.tar.xz
+	test? ( https://releases.llvm.org/${PV/_//}/${LLVM_P}.tar.xz )"
+
+LICENSE="|| ( UoI-NCSA MIT )"
+SLOT="${PV%_*}"
+KEYWORDS=""
+IUSE="+clang test elibc_glibc"
+RESTRICT="!test? ( test ) !clang? ( test )"
+
+CLANG_SLOT=${SLOT%%.*}
+# llvm-6 for new lit options
+DEPEND="
+	>=sys-devel/llvm-6
+	clang? ( sys-devel/clang )
+	test? (
+		!<sys-apps/sandbox-2.13
+		$(python_gen_any_dep ">=dev-python/lit-5[\${PYTHON_USEDEP}]")
+		=sys-devel/clang-${PV%_*}*:${CLANG_SLOT}
+		sys-libs/compiler-rt:${SLOT} )
+	${PYTHON_DEPS}"
+
+S=${WORKDIR}/${MY_P}
+
+# least intrusive of all
+CMAKE_BUILD_TYPE=RelWithDebInfo
+
+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_unpack() {
+	einfo "Unpacking ${MY_P}.tar.xz ..."
+	tar -xf "${DISTDIR}/${MY_P}.tar.xz" || die
+	einfo "Unpacking ${P}-patchset.tar.xz ..."
+	tar -xf "${DISTDIR}/${PN}-6.0.1-patchset.tar.xz" || die
+
+	if use test; then
+		einfo "Unpacking parts of ${LLVM_P}.tar.xz ..."
+		tar -xf "${DISTDIR}/${LLVM_P}.tar.xz" \
+			"${LLVM_P}"/utils/{lit,unittest} || die
+		mv "${LLVM_P}" llvm || die
+	fi
+}
+
+src_prepare() {
+	cmake-utils_src_prepare
+
+	# apply the patchset (new glibc fixes)
+	eapply "${WORKDIR}/${PN}-6.0.1-patchset/0007-sanitizer_common-Fix-using-libtirpc-on-Linux.patch"
+	eapply "${WORKDIR}/${PN}-6.0.1-patchset/0008-test-Support-using-libtirpc-on-Linux.patch"
+
+	if use test; then
+		# remove tests that are broken by new glibc
+		# https://bugs.llvm.org/show_bug.cgi?id=36065
+		if use elibc_glibc && has_version '>=sys-libs/glibc-2.25'; then
+			rm test/lsan/TestCases/Linux/use_tls_dynamic.cc || die
+			rm test/msan/dtls_test.c || die
+		fi
+	fi
+}
+
+src_configure() {
+	# pre-set since we need to pass it to cmake
+	BUILD_DIR=${WORKDIR}/${P}_build
+
+	if use clang; then
+		local -x CC=${CHOST}-clang
+		local -x CXX=${CHOST}-clang++
+		strip-unsupported-flags
+	fi
+
+	local mycmakeargs=(
+		-DCOMPILER_RT_INSTALL_PATH="${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)
+		# built-ins installed by sys-libs/compiler-rt
+		-DCOMPILER_RT_BUILD_BUILTINS=OFF
+		-DCOMPILER_RT_BUILD_LIBFUZZER=ON
+		-DCOMPILER_RT_BUILD_PROFILE=ON
+		-DCOMPILER_RT_BUILD_SANITIZERS=ON
+		-DCOMPILER_RT_BUILD_XRAY=ON
+	)
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_MAIN_SRC_DIR="${WORKDIR}/llvm"
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="-vv;-j;${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}"
+
+			# they are created during src_test()
+			-DCOMPILER_RT_TEST_COMPILER="${BUILD_DIR}/lib/llvm/${CLANG_SLOT}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${BUILD_DIR}/lib/llvm/${CLANG_SLOT}/bin/clang++"
+		)
+
+		# same flags are passed for build & tests, so we need to strip
+		# them down to a subset supported by clang
+		CC=${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang \
+		CXX=${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang++ \
+		strip-unsupported-flags
+	fi
+
+	if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
+		mycmakeargs+=(
+			# disable use of SDK for the system itself
+			-DDARWIN_macosx_CACHED_SYSROOT=/
+		)
+	fi
+
+	cmake-utils_src_configure
+
+	if use test; then
+		local sys_dir=( "${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/${CLANG_SLOT}/{bin,$(get_libdir)},clang/${SLOT}/include} || die
+		cp "${EPREFIX}"/usr/lib/llvm/${CLANG_SLOT}/bin/clang{,++} \
+			"${BUILD_DIR}"/lib/llvm/${CLANG_SLOT}/bin/ || die
+		cp "${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 ${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/$(get_libdir)/LLVMgold.so ]]; then
+			ln -s "${EPREFIX}"/usr/lib/llvm/${CLANG_SLOT}/$(get_libdir)/LLVMgold.so \
+				"${BUILD_DIR}"/lib/llvm/${CLANG_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-utils_src_make check-all
+}
diff --git a/sys-libs/compiler-rt/Manifest b/sys-libs/compiler-rt/Manifest
index e18264ec3c95..afe05f5a7b39 100644
--- a/sys-libs/compiler-rt/Manifest
+++ b/sys-libs/compiler-rt/Manifest
@@ -1,9 +1,11 @@
 DIST compiler-rt-4.0.1.src.tar.xz 1434100 BLAKE2B ca6bf78fc07f387b7244a52ef648b06a5685effb46a66b241a9ee847ecafb17d02602f49b0dbe473d47202586874a043a6d75141400062f526d2f808da323e1e SHA512 cfeb625884b273f7c0e6767b81a8d3e5f24e0b96a510d5764d9d47a0e215fc841b4cb9d1843c8fb428cd21def720cfbfe8d3593ff5bb390548ebc8c32a902649
 DIST compiler-rt-5.0.2.src.tar.xz 1543256 BLAKE2B 09fa84b8f3e9b8627a14387bc6eaa3d6b4588b9c8f1ac5a0114135fd830e3d45922408b237866789eb81bf38defde1186e0f7430a69f825bee12776b7cd9f74e SHA512 605a6d064877a860d6c9097e0220896dfceafed0a2392ad495c97aa347b97899d89f7e21932e29d3274f396615837414a3e730a915fe4f53eaa858ce3642a666
 DIST compiler-rt-6.0.1.src.tar.xz 1686820 BLAKE2B 59fa3f6e478bd4d6dfa056c85dcdc4349cbce7cea7fc56519feddc9d66c88c9ca48bad7967432ceb81d754213577f12707035afd827cf630a58627575b73b798 SHA512 69850c1ad92c66977fa217cbfb42a6a3f502fbe3d1a08daa7fc4cfeb617a7736d231f8ad8d93b10b1ae29bd753315d2a2d70f9ff1f4d18a9a7cc81758d91f963
+DIST compiler-rt-7.0.0rc2.src.tar.xz 1817604 BLAKE2B 27a0ab220eb40a50db6f2782f1faf249c21b79c71447d88d4dcd04653c77516ecc832a8e53ea9a3e6f5b2d3c0115ab325101f94b53987a520fc92899adff0f79 SHA512 e41c849e2d6e6786d5aa74872cbfa9774cd3bef003c1fcba91d8bebb6d4df55b3f161cb059fa124e74ca5e16f2c856e95359bedb8a18ec124da79897523266f7
 EBUILD compiler-rt-4.0.1.ebuild 4144 BLAKE2B a89fa2681b1254b285aeab803103860efddb6990b33bbe725fe52f7ebba5652f4ba9ecebbced1f63adc84dac4dc7dd26b10a6e7863169bc08f8e95cc2ba868fa SHA512 f14a4a61cc42a37d62e6662aeb95c8d2c3534b0ffbee57cf788ce1df62ab1387af76e90a2d79708c50b8b70d073b00298b0d31c71e8d69e11f2e9204dcbaca4e
 EBUILD compiler-rt-5.0.2.ebuild 2840 BLAKE2B 4c6e6ca121bad66f69f272a1ddc8a5153196c8f2608da08b5326e264842fe60ae8a4cb1aa98e2907b141068e5af997fe81ae13708dfd148f8676bebf18b894d2 SHA512 3fcea6a7045c1dc666ad6cd9c575b1ba931719bf31457f7493bb7b9c7950bca8e1c5eb8ce4342c1098250d0c126e85ba86b56724b17a3f6bb43c2846fb765a1f
 EBUILD compiler-rt-6.0.1.ebuild 2911 BLAKE2B 9ee423b460c62366af5525ab3b32cd2980aff78331a65b5658a50e0f808c9cb694d2e5d85bd753d291e1b5f96ab9e6cbc6a6d9f0cddcd9f7f8521ed5280f8291 SHA512 ecce0303d9db8ec0c74b3d0b248547402c32b7bceef52a5bb999f076c8fa82e209d5d113e6c14a1511e99dbf04bfd4d79077da1c010d9069a1bd284a168b26e0
+EBUILD compiler-rt-7.0.0_rc2.ebuild 2834 BLAKE2B 48508cc08d2fb0d1cbc4b75e119c53fb6ae9e7560a4cf37f6d6bbc94d81b29f9decccf21e974458682407f69e601f92cff460841bc32ccf16c1f18eb29298911 SHA512 f29090cc27290ae36dae5497593e0bb13fbd957caa2181cc50f748847350428501b609fac6cb42f7d3e5bfad50740a3a89b115af954176ce24288e4e33e76ed2
 EBUILD compiler-rt-7.0.9999.ebuild 2949 BLAKE2B a2e01edfac95532ba7dea22ef3a2d8b30de546129fc9c6e69a4618bdfcc0143cdc81942e707711c67b5d00cd6ab10c1b373594738f43554f6870536fd6f987b6 SHA512 f14213d2dd0d73ce1c75904da558d6e50ca76e2ec1cb6d2e6b4df698b56fdd52312083d481ec24d22cc48e997511144d4009841d7461dc1efaf1813858c533d7
 EBUILD compiler-rt-9999.ebuild 2924 BLAKE2B cf4a64f89ad620025fe423575b3117c69c64524d52ecd5d5a292f12c5c53eec23c631f7a7104ae101b6f5b38619d9b4480f92f922e5d36e399dd000617c36544 SHA512 5ef28c369a110e4423e346e128deb0b11805bd7086e5538b603a7644c62bc43e36a500c25ae9ee196622f24197b9bd94f405d487b62eb573208fba36d55d92ac
 MISC metadata.xml 333 BLAKE2B 24e417cb7b8ab7730b18a3e1e5e29d008042e4fd53cf1ba3cc9d18719160b0410854ddfae52315c690138e61fb0196015968fa09b98af6470cd8bdecc09205ef SHA512 97daa7452a696b7297c47f5f637a33425f82b51426060a75b3de6bc812f9ddcd3c70ae068bc3e88ce937ab1eb10d59b0ab48a2d2c0397a112b8b6a754e333bdc
diff --git a/sys-libs/compiler-rt/compiler-rt-7.0.0_rc2.ebuild b/sys-libs/compiler-rt/compiler-rt-7.0.0_rc2.ebuild
new file mode 100644
index 000000000000..18534286565d
--- /dev/null
+++ b/sys-libs/compiler-rt/compiler-rt-7.0.0_rc2.ebuild
@@ -0,0 +1,109 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
+# (needed due to CMAKE_BUILD_TYPE != Gentoo)
+CMAKE_MIN_VERSION=3.7.0-r1
+PYTHON_COMPAT=( python2_7 )
+
+inherit cmake-utils flag-o-matic llvm multiprocessing \
+	python-any-r1 toolchain-funcs
+
+DESCRIPTION="Compiler runtime library for clang (built-in part)"
+HOMEPAGE="https://llvm.org/"
+SRC_URI="https://prereleases.llvm.org/${PV/_//}/${P/_/}.src.tar.xz"
+
+LICENSE="|| ( UoI-NCSA MIT )"
+SLOT="${PV%_*}"
+KEYWORDS=""
+IUSE="+clang test"
+RESTRICT="!test? ( test ) !clang? ( test )"
+
+CLANG_SLOT=${SLOT%%.*}
+# llvm-6 for new lit options
+DEPEND="
+	>=sys-devel/llvm-6
+	clang? ( sys-devel/clang )
+	test? (
+		$(python_gen_any_dep "dev-python/lit[\${PYTHON_USEDEP}]")
+		=sys-devel/clang-${PV%_*}*:${CLANG_SLOT} )
+	${PYTHON_DEPS}"
+
+S=${WORKDIR}/${P/_/}.src
+
+# least intrusive of all
+CMAKE_BUILD_TYPE=RelWithDebInfo
+
+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() {
+	llvm_pkg_setup
+	python-any-r1_pkg_setup
+}
+
+test_compiler() {
+	$(tc-getCC) ${CFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+src_configure() {
+	# pre-set since we need to pass it to cmake
+	BUILD_DIR=${WORKDIR}/${P}_build
+
+	local nolib_flags=( -nodefaultlibs -lc )
+	if use clang; then
+		local -x CC=${CHOST}-clang
+		local -x CXX=${CHOST}-clang++
+		# ensure we can use clang before installing compiler-rt
+		local -x LDFLAGS="${LDFLAGS} ${nolib_flags[*]}"
+		strip-unsupported-flags
+	elif ! test_compiler; then
+		if test_compiler "${nolib_flags[@]}"; then
+			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_PROFILE=OFF
+		-DCOMPILER_RT_BUILD_SANITIZERS=OFF
+		-DCOMPILER_RT_BUILD_XRAY=OFF
+	)
+
+	if use prefix && [[ "${CHOST}" == *-darwin* ]] ; then
+		mycmakeargs+=(
+			# disable use of SDK for the system itself
+			-DDARWIN_macosx_CACHED_SYSROOT=/
+		)
+	fi
+
+	if use test; then
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="-vv;-j;${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}"
+
+			-DCOMPILER_RT_TEST_COMPILER="${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang"
+			-DCOMPILER_RT_TEST_CXX_COMPILER="${EPREFIX}/usr/lib/llvm/${CLANG_SLOT}/bin/clang++"
+		)
+	fi
+
+	cmake-utils_src_configure
+}
+
+src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake-utils_src_make check-builtins
+}
diff --git a/sys-libs/libcxx/Manifest b/sys-libs/libcxx/Manifest
index 56918e663a36..3f7f93304246 100644
--- a/sys-libs/libcxx/Manifest
+++ b/sys-libs/libcxx/Manifest
@@ -7,11 +7,13 @@ DIST libcxx-3.9.1.src.tar.xz 1209020 BLAKE2B 510e77c2c1163babbba904933f441e8720b
 DIST libcxx-4.0.1.src.tar.xz 1446380 BLAKE2B cd871eff4c4ca25a1fe4d27f778e913fe536a0b5863ea7dd3c8895f6b743b6f039e4df71f9ba5124c98761a8099666f68e1dfd073b5ec7b9fe0007ef09a9117d SHA512 91f3f397be606989be99865d0b279557f9afb93f7a74ed10c3a74f4440e38b5694ddf452bbf2f487cacd4391606dd5c7edfe5130f2de19e2acfd6cce619d028a
 DIST libcxx-5.0.2.src.tar.xz 1530908 BLAKE2B e0c47d6803668267a71c75df873a136a2c3bec3732a08c365107b286f6dfef883edb81f9f4d22a0f312228865528bf1f15450c41803f8d3a8c8081fe12b62c25 SHA512 c77e0ea6bb3dc03270312de4a24fdd0d027448b2e182af31489031fd52f0997377c9049769930b80b2ba0062fe21317d8ae823c5e80e12128f8ae8e6f171be22
 DIST libcxx-6.0.1.src.tar.xz 1552328 BLAKE2B 65a6addd04e530c2a72e8cba207282b9e9fafc01a594d7b11f63d10b6f88eca67a3cdf90b8055e410ede358d9be1f63fbe427f308e1337833447c0260d96e1c8 SHA512 c04f628b0924d76f035f615b59d19ce42dfc19c9a8eea4fe2b22a95cfe5a037ebdb30943fd741443939df5b4cf692bc1e51c840fefefbd134e3afbe2a75fe875
+DIST libcxx-7.0.0rc2.src.tar.xz 1654748 BLAKE2B 95664de42bfa6b77c5db32c092469c36e92b5eb9554bf381f761e04a29da1f413c1ead2ac93674a30ad9d743aa3cc9f22e5edebd043d16f903ed83901a743ae6 SHA512 c0b84400cb7694f7088b965cb0cac26853ecc485c775afbb0ad2cfdc53497eb95b76f917b16090372b77297e7f80372aef29023da564387be49e2f412efb5746
 EBUILD libcxx-3.7.1.ebuild 5335 BLAKE2B 6f4dbbb8dbc7f6e8b97f05ff3e638bb037bad416feffe5207a9cba166a5c0e0c92c3cac954088cc04cdf2a9be62f17cd5d7ece472e4e20d3c0be5b3c1edb2f52 SHA512 f4e04906e7205cd3d2f3180a0b897c1a9eaf5c65249bdbb62ed32a0455132009c88ae6f080b52abe6973752073ca3bc32e37e3491db9de2fc030cf77e4ed91b0
 EBUILD libcxx-3.9.1.ebuild 6815 BLAKE2B d15c83602e244f8a50e0a9d15869dbd4c7be226d8b1f93249cb6658149ad2408f0feada97403a0dfa3dcd8ac25b98ae084d1d17c879f67ae24d33f8497aba569 SHA512 9c9632590b49cd01ad324641ee296f08442940ab1dda1f0c7cdc77abe6b653f70d0baa9b796ef7d77e1f4728e96fe27fcd42d79a389cfcf2b2427b087b9985af
 EBUILD libcxx-4.0.1.ebuild 6453 BLAKE2B 2cab9946b4b79c4fc5310aae7ad32ae21f28a87e3e43c87731fe0542478342c4c7f5587472c39198b43f2a1f61329fc55a9e5c24804a34f70c70236e017eb964 SHA512 b656520a6bf00a73763fdf6f052869c76adb76ae9650d763c6b78a02393202c9bfeadd807ebafd6a071395aa64a0ede464fad0e4c127dfe39720e13342f82fc0
 EBUILD libcxx-5.0.2.ebuild 6363 BLAKE2B 8b4814e161304c2f69bf13e470c80ac1b681bbca60ce4076f4a06d22b35cea98e1f33a2afcfd7ef131d406ccdcde8f2dfaf9c4ea0b10ec7c40f13c0f259dbeba SHA512 820fbaa761cb4c078ed65f0bf6f4455428714d83628dd57f267b9480ef78a485ff2527bb98f71f10728cf58b8b53f699182ed52b9275dc9fd597eb41202884a4
 EBUILD libcxx-6.0.1.ebuild 6607 BLAKE2B aaab87d186c40106e35c90350eb57b820dda610cc65705c4464763f89067bc8f4ef09c023c03ebaaddcbc15c3a2982a9069ec0f940efe7959b58d0f45ea417dc SHA512 ec9f51f549956d45c1fd1ad42b8640fb2a390c51cf53abc3fc47f33077eb4b0d0a8d180bb4e8ecfeb408175c400147d13fbea6049a4346635416629a64179610
+EBUILD libcxx-7.0.0_rc2.ebuild 6582 BLAKE2B 40e948082679c805228976cb7f72742945e892e1532503ad6379391ee1461ea400499cb9313dd273b79c1bacce2c3d966465d5e5cf4ee7e41e7b9ffc71714cf5 SHA512 9a11c7b8b8b766555aafcd9bc43c5bfc6eb20ae6c27466fbabe880309bd07dd34ba2132f770db5c2b3b47ca2aba0bbd5184d7c7d2649ed5d90f59ded5857fc97
 EBUILD libcxx-7.0.9999.ebuild 6908 BLAKE2B edbb4b1c6fc2e2b813f5181f91b10dcc7106e806e222d02dc01cae726fab7df4323b198c497f5c39dc15ef4dd1a868ba4930e34b6bd5eb3399ad653846d25a11 SHA512 29fa5ef9ce51485d64458514a464e4000ba51b8b24535d0c57aca7777316e35ae901bf1c99fb148e28b6f54f01200d7a7457934d6c64ace1ca6b0ee5c39db872
 EBUILD libcxx-9999.ebuild 6880 BLAKE2B ba22276470631bb5e5e7781e0c2678b3a6a12bc6b5d39fcf37f20ffe5d2f90c24f0185c69d8cf79924a957fdcfd016609aa88f13f291d863a1919cef23e41f30 SHA512 0501d14d588a2231c6dbe15aee9428b66f7c3dad6915215abb65bdcc5aec23f8185a6aaa7bc838ad44bf7fc9ad2027fb68e33879b7f4a0ee311c71ff27fa0d4d
 MISC metadata.xml 854 BLAKE2B f731ffbb07722face32cfe5ef0576c572fc45d93e8d78ec4adb46c43b95999dc4eb48f20311517fe08a397f2e5dec56c530bb6787a058358cfd1af8d79ffad90 SHA512 8ef3feab266e09442a42baced2d72667fa8b1290624c2c84bab7b173ead72669568847f6e995388fc1d7bc722381f60805d87b2a0cc2d04ae0c49e36bec3802a
diff --git a/sys-libs/libcxx/libcxx-7.0.0_rc2.ebuild b/sys-libs/libcxx/libcxx-7.0.0_rc2.ebuild
new file mode 100644
index 000000000000..cc26d7d1ce0f
--- /dev/null
+++ b/sys-libs/libcxx/libcxx-7.0.0_rc2.ebuild
@@ -0,0 +1,209 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+# Ninja provides better scalability and cleaner verbose output, and is used
+# throughout all LLVM projects.
+: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
+# (needed due to CMAKE_BUILD_TYPE != Gentoo)
+CMAKE_MIN_VERSION=3.7.0-r1
+PYTHON_COMPAT=( python2_7 )
+
+inherit cmake-multilib llvm multiprocessing python-any-r1 \
+	toolchain-funcs
+
+DESCRIPTION="New implementation of the C++ standard library, targeting C++11"
+HOMEPAGE="https://libcxx.llvm.org/"
+SRC_URI="https://prereleases.llvm.org/${PV/_//}/${P/_/}.src.tar.xz"
+
+LICENSE="|| ( UoI-NCSA MIT )"
+SLOT="0"
+KEYWORDS=""
+IUSE="elibc_glibc elibc_musl +libcxxabi libcxxrt +libunwind +static-libs test"
+REQUIRED_USE="libunwind? ( || ( libcxxabi libcxxrt ) )
+	?? ( libcxxabi libcxxrt )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	libcxxabi? ( ~sys-libs/libcxxabi-${PV}[libunwind=,static-libs?,${MULTILIB_USEDEP}] )
+	libcxxrt? ( sys-libs/libcxxrt[libunwind=,static-libs?,${MULTILIB_USEDEP}] )
+	!libcxxabi? ( !libcxxrt? ( >=sys-devel/gcc-4.7:=[cxx] ) )"
+# llvm-6 for new lit options
+# clang-3.9.0 installs necessary target symlinks unconditionally
+# which removes the need for MULTILIB_USEDEP
+DEPEND="${RDEPEND}
+	test? ( >=sys-devel/clang-3.9.0
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]') )
+	app-arch/xz-utils
+	>=sys-devel/llvm-6"
+
+S=${WORKDIR}/${P/_/}.src
+
+DOCS=( CREDITS.TXT )
+
+PATCHES=(
+	# Add link flag "-Wl,-z,defs" to avoid underlinking; this is needed in a
+	# out-of-tree build.
+	"${FILESDIR}/${PN}-3.9-cmake-link-flags.patch"
+)
+
+# least intrusive of all
+CMAKE_BUILD_TYPE=RelWithDebInfo
+
+python_check_deps() {
+	has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	llvm_pkg_setup
+	use test && python-any-r1_pkg_setup
+
+	if ! use libcxxabi && ! use libcxxrt && ! 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
+	if tc-is-gcc && [[ $(gcc-version) < 4.7 ]] ; then
+		eerror "${PN} needs to be built with gcc-4.7 or later (or other"
+		eerror "conformant compilers). Please use gcc-config to switch to"
+		eerror "gcc-4.7 or later version."
+		die
+	fi
+}
+
+test_compiler() {
+	$(tc-getCXX) ${CXXFLAGS} ${LDFLAGS} "${@}" -o /dev/null -x c++ - \
+		<<<'int main() { return 0; }' &>/dev/null
+}
+
+multilib_src_configure() {
+	local cxxabi cxxabi_incs
+	if use libcxxabi; then
+		cxxabi=libcxxabi
+		cxxabi_incs="${EPREFIX}/usr/include/libcxxabi"
+	elif use libcxxrt; then
+		cxxabi=libcxxrt
+		cxxabi_incs="${EPREFIX}/usr/include/libcxxrt"
+	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}/${CHOST}"
+	fi
+
+	# we want -lgcc_s for unwinder, and for compiler runtime when using
+	# gcc, clang with gcc runtime (or any unknown compiler)
+	local extra_libs=() want_gcc_s=ON
+	if use libunwind; then
+		# work-around missing -lunwind upstream
+		extra_libs+=( -lunwind )
+		# if we're using libunwind and clang with compiler-rt, we want
+		# to link to compiler-rt instead of -lgcc_s
+		if tc-is-clang; then
+			local compiler_rt=$($(tc-getCC) ${CFLAGS} ${CPPFLAGS} \
+			   ${LDFLAGS} -print-libgcc-file-name)
+			if [[ ${compiler_rt} == *libclang_rt* ]]; then
+				want_gcc_s=OFF
+				extra_libs+=( "${compiler_rt}" )
+			fi
+		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=(
+		-DLIBCXX_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=$(usex elibc_musl)
+		-DLIBCXX_HAS_GCC_S_LIB=${want_gcc_s}
+		-DLIBCXX_INCLUDE_TESTS=$(usex test)
+		-DCMAKE_SHARED_LINKER_FLAGS="${extra_libs[*]} ${LDFLAGS}"
+	)
+
+	if use test; then
+		local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null)
+		local jobs=${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}
+
+		[[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests"
+
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="-vv;-j;${jobs};--param=cxx_under_test=${clang_path}"
+		)
+	fi
+	cmake-utils_src_configure
+}
+
+multilib_src_test() {
+	cmake-utils_src_make check-libcxx
+}
+
+# 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 ( $@ )
+END_LDSCRIPT
+}
+
+gen_static_ldscript() {
+	local libdir=$(get_libdir)
+	local cxxabi_lib=$(usex libcxxabi "libc++abi.a" "$(usex libcxxrt "libcxxrt.a" "libsupc++.a")")
+
+	# Move it first.
+	mv "${ED}/usr/${libdir}/libc++.a" "${ED}/usr/${libdir}/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 ${cxxabi_lib} $(usex libunwind libunwind.a libgcc_eh.a)"
+	# On Linux/glibc it does not link without libpthread or libdl. It is
+	# fine on FreeBSD.
+	use elibc_glibc && deps+=" libpthread.a libdl.a"
+
+	gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.a" || die
+}
+
+gen_shared_ldscript() {
+	local libdir=$(get_libdir)
+	# libsupc++ doesn't have a shared version
+	local cxxabi_lib=$(usex libcxxabi "libc++abi.so" "$(usex libcxxrt "libcxxrt.so" "libsupc++.a")")
+
+	mv "${ED}/usr/${libdir}/libc++.so" "${ED}/usr/${libdir}/libc++_shared.so" || die
+	local deps="libc++_shared.so ${cxxabi_lib} $(usex libunwind libunwind.so libgcc_s.so)"
+
+	gen_ldscript "${deps}" > "${ED}/usr/${libdir}/libc++.so" || die
+}
+
+multilib_src_install() {
+	cmake-utils_src_install
+	gen_shared_ldscript
+	use static-libs && gen_static_ldscript
+}
+
+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 fe8177f1d988..764abe1cccb1 100644
--- a/sys-libs/libcxxabi/Manifest
+++ b/sys-libs/libcxxabi/Manifest
@@ -4,14 +4,17 @@ DIST libcxx-3.9.1.src.tar.xz 1209020 BLAKE2B 510e77c2c1163babbba904933f441e8720b
 DIST libcxx-4.0.1.src.tar.xz 1446380 BLAKE2B cd871eff4c4ca25a1fe4d27f778e913fe536a0b5863ea7dd3c8895f6b743b6f039e4df71f9ba5124c98761a8099666f68e1dfd073b5ec7b9fe0007ef09a9117d SHA512 91f3f397be606989be99865d0b279557f9afb93f7a74ed10c3a74f4440e38b5694ddf452bbf2f487cacd4391606dd5c7edfe5130f2de19e2acfd6cce619d028a
 DIST libcxx-5.0.2.src.tar.xz 1530908 BLAKE2B e0c47d6803668267a71c75df873a136a2c3bec3732a08c365107b286f6dfef883edb81f9f4d22a0f312228865528bf1f15450c41803f8d3a8c8081fe12b62c25 SHA512 c77e0ea6bb3dc03270312de4a24fdd0d027448b2e182af31489031fd52f0997377c9049769930b80b2ba0062fe21317d8ae823c5e80e12128f8ae8e6f171be22
 DIST libcxx-6.0.1.src.tar.xz 1552328 BLAKE2B 65a6addd04e530c2a72e8cba207282b9e9fafc01a594d7b11f63d10b6f88eca67a3cdf90b8055e410ede358d9be1f63fbe427f308e1337833447c0260d96e1c8 SHA512 c04f628b0924d76f035f615b59d19ce42dfc19c9a8eea4fe2b22a95cfe5a037ebdb30943fd741443939df5b4cf692bc1e51c840fefefbd134e3afbe2a75fe875
+DIST libcxx-7.0.0rc2.src.tar.xz 1654748 BLAKE2B 95664de42bfa6b77c5db32c092469c36e92b5eb9554bf381f761e04a29da1f413c1ead2ac93674a30ad9d743aa3cc9f22e5edebd043d16f903ed83901a743ae6 SHA512 c0b84400cb7694f7088b965cb0cac26853ecc485c775afbb0ad2cfdc53497eb95b76f917b16090372b77297e7f80372aef29023da564387be49e2f412efb5746
 DIST libcxxabi-3.9.1.src.tar.xz 510964 BLAKE2B a6abda1b92473781ea3029169c43547f15c1aa6e0ec6f9692ae633d109e050a6ff82ce8bceb0455375991b85c99784a4f06a568b8c77a4cf2865b9b2861e9595 SHA512 4f5603f1476b759c86d4784728fbdd212c59b30dc56d787c1834bf68a9cd83071fa22658d24e5a58beb94c0c656b0e4457d7da6e3048715dd36bd68380fc336e
 DIST libcxxabi-4.0.1.src.tar.xz 515820 BLAKE2B 7d9e0dee4f6cb3eaa22647d959f8bf3d86779f8c51c0738143ba3daca83881daacc0663a1d2463507c8c4b8a1b9e1d5c111b829e5af2cb5b6f86bae8f06a0d47 SHA512 e94315ba8a507d8481d70c33e7ab2d724d51726edb8412c70a1b5f59e3f15d5825f1502dc2db138b20e5293fb90a184050be94d5ac270fd7ce78b502efb9f86a
 DIST libcxxabi-5.0.2.src.tar.xz 521448 BLAKE2B e7e42908845f692cdb8709955eb46cbc18ee1f4ac9f0224b6e2a6bc2af998415eca5cda03ffcac27ef6a93cde928951bc38503bae9144b634abd17ec46ad96eb SHA512 304c0ef1b2fd26d52dae66013ea0051de4c3cb1e9c8d1308833f34aec1ad288fcfe5d583f00ceb84c8d271c5cd5f868aa135a93f007138d124c01b70c13e842e
 DIST libcxxabi-6.0.1.src.tar.xz 528356 BLAKE2B b301b750b2928864d3fc51e66cf91aab6837636ec2bce706b9a97296ec96af4bd2e80b1bf80c9b4afe449335ee12bbdd1905433c27e1770e16bc306baf206927 SHA512 bbb4c7b412e295cb735f637df48a83093eef45ed5444f7766790b4b047f75fd5fd634d8f3a8ac33a5c1407bd16fd450ba113f60a9bcc1d0a911fe0c54e9c81f2
+DIST libcxxabi-7.0.0rc2.src.tar.xz 535948 BLAKE2B 02505fd0101d9be53c66f14f5aca7a99c3e4309d9979be1a5792f869ed8e72562e8f7a2fba222d2a121845d4425ff98444046e4edfe2023891ba80521ebc4a00 SHA512 fcb51c4005bb4b79426467c8d7128412c37b235518455fa57521e04df2d47fc97aa0bce10ebec4fe3f3097bb3657f56014258ca8c46c978e709927fcce27fd5c
 EBUILD libcxxabi-3.9.1.ebuild 2646 BLAKE2B a1f66067e57f09aca9d2f44735f3c7b01af38b381ecab526f9bae8ffbc5c96856c5a6d8c829b2d95f0a0afffefd319670c8484c826ce81b94a63c51bb53ed114 SHA512 4849fbfe11876cb403d78852abd6df27a0dbeada69c15fd1af6e7a20d742fcca064b227592e3ac69e32546cef94c790f28d63d40c8522213a9910f0b625ea379
 EBUILD libcxxabi-4.0.1.ebuild 3328 BLAKE2B 2cc64e780a60b79a5eed18840b3048256a9cd5374abaa61594085587ee120c2ac134287ece9fbc5c58ed947657cd280c32520719e6c4996c2593be20ab19894c SHA512 822b5056c1e62d1dd116349f6cb47fa023a20899a7ef18f91b80e7440ff857d55500bdf8adb9286c1f3f3ba2a45a7a95ba78430b58267e3e70296201951c66d3
 EBUILD libcxxabi-5.0.2.ebuild 3193 BLAKE2B b1157a436e40da0b67d012c903b9a137f3544a404e91a414a3d451be7f1b6c5e0a79c3e424f8c0cbf58b33166332988ecc13ee84a3c5840ad54de7c033770a97 SHA512 1330ec5b22bb11f5e142eea5acf03cbe6f1282a58206de9039453100a5fb72a30d46fe3ac3be6c52ddc07eb4b71486fd1be3e83a15a7ae76fa999fb2660cd908
 EBUILD libcxxabi-6.0.1.ebuild 3172 BLAKE2B 0078aa6ca753285439a17dea5af0c66a991a1844b7bd487c0f51b95d9c8007a4d077515d3282cea8a044692a3d14f869f2b651bed3a7ba5e6acd20629bfd2e5b SHA512 b1168935e250e2a83356061456bef94635a1bb797abeb725f201298de3f6c90e285714799de4d79f30bd33f2a9ad9cfbdad2f4339100023485aee4554c36c133
+EBUILD libcxxabi-7.0.0_rc2.ebuild 3150 BLAKE2B 474790f1b70870b3fa0e36813e9da5d4dda5c92012733cc1315880612da233817a043c7b5a3060fe7ce5db92c484bdc74ae811f54f5099b971c18436caa4360f SHA512 670e5475fc8f494235bdb8abab8c30420b8c2a54c1daea95deec88b8f9f13c6184f907fee77c110a066a61ef0078f07b25fdce2d1fa0020827878175e9e54ffd
 EBUILD libcxxabi-7.0.9999.ebuild 3288 BLAKE2B 1c2f5f25a232d6e9a34fbb2b93a3d447542d770938fe8e8052a6e4e5e499e95e78033c259c674a1ebb3538577452c709c760f8a258d86c139a3b02857a63ec05 SHA512 add8b1705623bf5e4e6e504995f88cad05d1dbe57d5d803a45c13e49f77e8e45cd2c85e821d27ffc59d1ef8d7a216767f33019c6e8cb13e20f0075b0430f9e1d
 EBUILD libcxxabi-9999.ebuild 3263 BLAKE2B 26e1877ef423b0f869b6033601c584599c00f6f46b7296ba213ff080bb060c81995a2be2693b16b73e94c979c46fa5632b0fcf110ba2bc86c1b8f30bb548f74d SHA512 28ee56c5c823aa82e02e7fa680455e425d2ec5c4ae4c98c82a18f7afa1d0a663d22f4a85299fb44c3c10d5367bf33637f68a70516b02c6c206293038a65e22ef
 MISC metadata.xml 350 BLAKE2B 67b70b8d7292327882a845b76667ce24fee728cd84f27ed7e329bc7963631cba4c28bafce5e6a5fefb4ba1df5c7fd572b3b0d7a2b31ef649496f2f991b691bff SHA512 317dd7b59a711dd0461b5369f7e31ea196882b018e047e1dbae8077274d06cb68542c8762efb852cce0b8021bedea69c19aa0c124b9414a36cf1a9c00e0b9703
diff --git a/sys-libs/libcxxabi/libcxxabi-7.0.0_rc2.ebuild b/sys-libs/libcxxabi/libcxxabi-7.0.0_rc2.ebuild
new file mode 100644
index 000000000000..d2ecadb8b97b
--- /dev/null
+++ b/sys-libs/libcxxabi/libcxxabi-7.0.0_rc2.ebuild
@@ -0,0 +1,119 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
+# (needed due to CMAKE_BUILD_TYPE != Gentoo)
+CMAKE_MIN_VERSION=3.7.0-r1
+PYTHON_COMPAT=( python2_7 )
+
+inherit cmake-multilib llvm multiprocessing python-any-r1
+
+MY_P=${P/_/}.src
+LIBCXX_P=libcxx-${PV/_/}.src
+
+DESCRIPTION="Low level support for a standard C++ library"
+HOMEPAGE="https://libcxxabi.llvm.org/"
+SRC_URI="https://prereleases.llvm.org/${PV/_//}/${MY_P}.tar.xz
+	https://prereleases.llvm.org/${PV/_//}/${LIBCXX_P}.tar.xz"
+
+LICENSE="|| ( UoI-NCSA MIT )"
+SLOT="0"
+KEYWORDS=""
+IUSE="+libunwind +static-libs test elibc_musl"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	libunwind? (
+		|| (
+			>=sys-libs/libunwind-1.0.1-r1[static-libs?,${MULTILIB_USEDEP}]
+			>=sys-libs/llvm-libunwind-3.9.0-r1[static-libs?,${MULTILIB_USEDEP}]
+		)
+	)"
+# llvm-6 for new lit options
+DEPEND="${RDEPEND}
+	>=sys-devel/llvm-6
+	test? ( >=sys-devel/clang-3.9.0
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]') )"
+
+S=${WORKDIR}/${MY_P}
+
+# least intrusive of all
+CMAKE_BUILD_TYPE=RelWithDebInfo
+
+python_check_deps() {
+	has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	llvm_pkg_setup
+	use test && python-any-r1_pkg_setup
+}
+
+src_unpack() {
+	default
+	mv "${LIBCXX_P}" libcxx || die
+}
+
+multilib_src_configure() {
+	local libdir=$(get_libdir)
+	local mycmakeargs=(
+		-DLIBCXXABI_LIBDIR_SUFFIX=${libdir#lib}
+		-DLIBCXXABI_ENABLE_SHARED=ON
+		-DLIBCXXABI_ENABLE_STATIC=$(usex static-libs)
+		-DLIBCXXABI_USE_LLVM_UNWINDER=$(usex libunwind)
+		-DLIBCXXABI_INCLUDE_TESTS=$(usex test)
+
+		-DLIBCXXABI_LIBCXX_INCLUDES="${WORKDIR}"/libcxx/include
+		# upstream is omitting standard search path for this
+		# probably because gcc & clang are bundling their own unwind.h
+		-DLIBCXXABI_LIBUNWIND_INCLUDES="${EPREFIX}"/usr/include
+	)
+	if use test; then
+		local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null)
+		local jobs=${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}
+
+		[[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests"
+
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="-vv;-j;${jobs};--param=cxx_under_test=${clang_path}"
+		)
+	fi
+	cmake-utils_src_configure
+}
+
+build_libcxx() {
+	local -x LDFLAGS="${LDFLAGS} -L${BUILD_DIR}/$(get_libdir)"
+	local CMAKE_USE_DIR=${WORKDIR}/libcxx
+	local BUILD_DIR=${BUILD_DIR}/libcxx
+	local mycmakeargs=(
+		-DLIBCXX_LIBDIR_SUFFIX=
+		-DLIBCXX_ENABLE_SHARED=ON
+		-DLIBCXX_ENABLE_STATIC=OFF
+		-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF
+		-DLIBCXX_CXX_ABI=libcxxabi
+		-DLIBCXX_CXX_ABI_INCLUDE_PATHS="${S}"/include
+		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+		-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
+		-DLIBCXX_HAS_GCC_S_LIB=OFF
+		-DLIBCXX_INCLUDE_TESTS=OFF
+	)
+
+	cmake-utils_src_configure
+	cmake-utils_src_compile
+}
+
+multilib_src_test() {
+	# build a local copy of libc++ for testing to avoid circular dep
+	build_libcxx
+	mv "${BUILD_DIR}"/libcxx/lib/libc++* "${BUILD_DIR}/$(get_libdir)/" || die
+
+	cmake-utils_src_make check-libcxxabi
+}
+
+multilib_src_install_all() {
+	insinto /usr/include/libcxxabi
+	doins -r include/.
+}
diff --git a/sys-libs/libomp/Manifest b/sys-libs/libomp/Manifest
index 8dbcd98e344a..891ea5767a19 100644
--- a/sys-libs/libomp/Manifest
+++ b/sys-libs/libomp/Manifest
@@ -2,9 +2,11 @@ AUX 4.0.1/0001-test-Try-to-link-latomic-to-provide-atomics-when-ava.patch 3456 B
 DIST openmp-4.0.1.src.tar.xz 2275240 BLAKE2B e63cf670c4cd2678afc4d7b96be85c3d157bf91a69510f980d9a0a07f61b449b22ff28d63753f32e63afedb4a7077c662a633f689a660b5047a83bcf1fb7f009 SHA512 0b737dde832c5907a0cac41fe1d594b61e85dd405eee42b39f09233db62b44543204ccc775e52e2981f9c9f0683b234526e288a3a7a04f712280fb3a575abcaf
 DIST openmp-5.0.2.src.tar.xz 2081560 BLAKE2B fbe41c6aaf4c8e961253609a598bec531ab4685cd8c307ab2528b9d7553eaa38122ee02a2c4d481454f9233c062b3a24bb174a182702a183907a3d15a10a9655 SHA512 511895ca6049c17de81ad86c39dcb940a7c1a793005e16d33e58d72ad47f62b8cb61003c234a7544a88e79f25d2c86e9df834f90d37ccbd4b47f71c369e90437
 DIST openmp-6.0.1.src.tar.xz 2048320 BLAKE2B 08b3a7051c985903f78331f55a1c6e928399b87c862c43c991e9bf78b66b6e412fc96f202b82c051176dbbe02422f8ceb7414f44ea8f3522f418e515c0f70c62 SHA512 abb956583e5d11d0c6f6d97183c081d658616a74933be884a591eaa3d8c4bb04f08f02016d2c86d7384c7ff1aa44fb949b0d967fc0ff50e3132aaba412e9add8
+DIST openmp-7.0.0rc2.src.tar.xz 910464 BLAKE2B a37364d52c7ac4b149e210cfd81e2a65a6513d152ab9ca99d2e9afc6c3e2ce8d65266c7977aa3b3edbf04110d7a77083b8bcd7129ccf0bd386fa20c8556525c7 SHA512 627057e451bd9d1c079d31616d13d09488a55912ee4d3b1ea1e3d5131111d8d7a723490525dfb8e1286371634fd37f4265d1e17d02d6d147a276d30fc37cbf03
 EBUILD libomp-4.0.1.ebuild 2527 BLAKE2B be262aa449e8d3c2392793b8af597c7d9a02e624f0d57ad8b24ef822bd57f6d243200ccee1022c18dcc52fc2d198d6aa2cfe83a1224f614ce0b2305f3f6bff69 SHA512 ca34a666e1aa6e767cd979866bcdcaf55da75dc8faa80d062e718ceda56576c3ebec88972787ae5dc4532bfdeb2d7f34f233b8c4983bfb1bc89bbd443ac54ac7
 EBUILD libomp-5.0.2.ebuild 2392 BLAKE2B 18b10357f48653d53a6a2ff6a8af75721a0fe774646365d730eae0afef6cb277218e79e26a6316ca2d5ff7a604941b46e3f1dd51c1924d69d3eb899356000749 SHA512 254569aaa7d2cd3952b9d9ace4303608a7fd73d174cccc4b69b8be80563b37792cc93273543fb4ca4732fa8f89772c4ce432e0769f42961bdb28f9d51d301481
 EBUILD libomp-6.0.1.ebuild 3257 BLAKE2B 44eb78a362f0a88c2096e5dbda7e11f94fa02f08cc5919f533e9f19e09d573d4d9921a3939eebc776b40f777cea5676d270e5e91434bb8430e9d1f445edddba2 SHA512 99d7f400c7ff76cdcdc8609e733baa4b69e3f87a131355da3f353b5e8f244f531717372f146cf57dc6d5230a1be27cecd7e00069780c53c43edfb3152e793ac9
+EBUILD libomp-7.0.0_rc2.ebuild 3202 BLAKE2B 80f2aba6d93528b9abf4154e13990c5d1085fc5eaee259d0e2604eb5e216c4eb98bcb5ccb3c935e1682ac1c4a105cb0665b340499c7e34161458d555d9c9890a SHA512 989a37b20c2441550c7ec921f4596c3ad84dadc98e57a9287d6b3bd4242d49f1c2efc4290a0fe0b1dc94aabb21a66caa2f54dce0db638891298d0530769c63e5
 EBUILD libomp-7.0.9999.ebuild 3230 BLAKE2B 600cece5328bb4dfdf2a4f99f7d3ddd28334e41529f59c6379ea9e1a2a8661abdb14f2cb5b6ec3bc98979fb70e5be1f433fcb63dce5de57d47e955dcae172334 SHA512 84955824d6fc4f8f62cafcaa931940c99b0ee69b9c91fa2102b983a230a22a2a882f1f9d1840888ae317193eff3c9adb7906f68db1de7fcef52880d6c36b1ad6
 EBUILD libomp-9999.ebuild 3205 BLAKE2B a8bca945602ba1b5045f473a2caed666242ec3ba75440ec6ef98ebdcf1fbf146c775baf142dfc47f676946b90c0a3cea797d7fdade4565d3467ef7b5b5481001 SHA512 4021e79b4057c3a86ce3f330f8532a3cc566ee64c9894c9f3c2bb402bf37431717105a5601b11c7413e71d965657dbdd6be2d215d4bafaba916fb0b371270cac
 MISC metadata.xml 825 BLAKE2B 07802144018f2f74b0927b53a346f99cbc7e36dbf501bb8dfc786f8d549c10eb688afafb1759f13d4d56d10f1bcae67dfa86cc2047cc39a9655a09a22e9a4260 SHA512 de43d5be94a5ea1cdfd3ae747d55b50d5d6ee577743f55d006d585d2d5acd5b3100845486ac415685f07361cd9985bae9347fff9c65417d198c49a61b4f6ba5e
diff --git a/sys-libs/libomp/libomp-7.0.0_rc2.ebuild b/sys-libs/libomp/libomp-7.0.0_rc2.ebuild
new file mode 100644
index 000000000000..ab4a7aff9689
--- /dev/null
+++ b/sys-libs/libomp/libomp-7.0.0_rc2.ebuild
@@ -0,0 +1,115 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
+# (needed due to CMAKE_BUILD_TYPE != Gentoo)
+CMAKE_MIN_VERSION=3.7.0-r1
+PYTHON_COMPAT=( python2_7 )
+
+inherit cmake-multilib linux-info multiprocessing python-any-r1
+
+DESCRIPTION="OpenMP runtime library for LLVM/clang compiler"
+HOMEPAGE="https://openmp.llvm.org"
+SRC_URI="https://prereleases.llvm.org/${PV/_//}/openmp-${PV/_/}.src.tar.xz"
+
+# Additional licenses:
+# - MIT-licensed Intel code,
+# - LLVM Software Grant from Intel.
+
+LICENSE="|| ( UoI-NCSA MIT ) MIT LLVM-Grant"
+SLOT="0"
+KEYWORDS=""
+IUSE="cuda hwloc kernel_linux offload ompt test"
+# CUDA works only with the x86_64 ABI
+REQUIRED_USE="offload? ( cuda? ( abi_x86_64 ) )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	hwloc? ( sys-apps/hwloc:0=[${MULTILIB_USEDEP}] )
+	offload? (
+		virtual/libelf:=[${MULTILIB_USEDEP}]
+		virtual/libffi:=[${MULTILIB_USEDEP}]
+		cuda? ( dev-util/nvidia-cuda-sdk:= )
+	)"
+# 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="${RDEPEND}
+	dev-lang/perl
+	offload? ( virtual/pkgconfig[${MULTILIB_USEDEP}] )
+	test? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+		>=sys-devel/clang-6
+	)"
+
+S=${WORKDIR}/openmp-${PV/_/}.src
+
+# least intrusive of all
+CMAKE_BUILD_TYPE=RelWithDebInfo
+
+python_check_deps() {
+	has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+kernel_pds_check() {
+	if use kernel_linux && kernel_is -lt 4 15 && kernel_is -ge 4 13; then
+		local CONFIG_CHECK="~!SCHED_PDS"
+		local ERROR_SCHED_PDS="\
+PDS scheduler versions >= 0.98c < 0.98i (e.g. used in kernels >= 4.13-pf11
+< 4.14-pf9) do not implement sched_yield() call which may result in horrible
+performance problems with libomp. If you are using one of the specified
+kernel versions, you may want to disable the PDS scheduler."
+
+		check_extra_config
+	fi
+}
+
+pkg_pretend() {
+	kernel_pds_check
+}
+
+pkg_setup() {
+	use test && python-any-r1_pkg_setup
+}
+
+multilib_src_configure() {
+	local libdir="$(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
+	)
+	use offload && mycmakeargs+=(
+		# this is non-fatal and libomp checks for CUDA conditionally
+		# to ABI, so we can just ignore passing the wrong value
+		# on non-amd64 ABIs
+		-DCMAKE_DISABLE_FIND_PACKAGE_CUDA=$(usex !cuda)
+	)
+	use test && mycmakeargs+=(
+		# this project does not use standard LLVM cmake macros
+		-DOPENMP_LLVM_LIT_EXECUTABLE="${EPREFIX}/usr/bin/lit"
+		-DOPENMP_LIT_ARGS="-vv;-j;${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}"
+
+		-DOPENMP_TEST_C_COMPILER="$(type -P "${CHOST}-clang")"
+		-DOPENMP_TEST_CXX_COMPILER="$(type -P "${CHOST}-clang++")"
+	)
+	cmake-utils_src_configure
+}
+
+multilib_src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake-utils_src_make check-libomp
+}
diff --git a/sys-libs/libudev-compat/Manifest b/sys-libs/libudev-compat/Manifest
index 870992fc09a8..d5f0bd2719a4 100644
--- a/sys-libs/libudev-compat/Manifest
+++ b/sys-libs/libudev-compat/Manifest
@@ -1,3 +1,3 @@
 AUX udev_old.c 895 BLAKE2B ccc45a3820556764fe16303c92e7e8d91cd79e9ba3cf488b05f505c867fdac43e9c40d26f263a63484ca14bf0e1eccaccb4618a5794f79babde97b22c211c9ba SHA512 4eafd908621857d0f4b415b7349d8ab992f40e5c2297270973462bd022b1b3e34cb365d4969e2f7801ad41c303f55649ea7bcfe9d8a32c997dd681bdc41a0237
-EBUILD libudev-compat-186.ebuild 1000 BLAKE2B a9f2318a789d7ce672340fd12156f40baa1953a95b85cdddb7e9a82391fbb6782e2d458e6b33ac052d2bbd36b20e7ed30eba6d12a8758a5273fba87afe466d31 SHA512 55123134505ecc5d35558fbcc56ce00a4c95897335b1cb52b4a2951e898474ed62431449acd47bc66d88a4509b2cd1cd844f7e12635246337032c321515c8ec7
+EBUILD libudev-compat-186-r1.ebuild 991 BLAKE2B 6a87f451a19c3eab44fd9b07a332315c74a56a67c722b0da420bc7a716eff310ba45a68f2c4f963adbcb76522bae47fc63de75d528c707e62137e653e6056a69 SHA512 8885e4fdfc78d54cc574a5ef42c41f5052391f5122d95308d8bb3dc47b5aaaf62e9d8ad61c5f34f4d0d59b1ecaebf738bb9b50f9da02615f4b38a1d6579b666a
 MISC metadata.xml 249 BLAKE2B adadbb193e28083d1141d4ed347a0d47143abe397ee892a750a9c5c34032477c2949cf28ad684f56f120d76587ac215a224a96da96b8b75d9808c564ab725721 SHA512 36526fd8f0e093e6b90968fb0f8baa7add223b6f351b1d9a9a41ef1ddbb13ba980826f3023f0677dcc5919c8183b4a679b9192f87f427e6d6de48eccbdc1e317
diff --git a/sys-libs/libudev-compat/libudev-compat-186.ebuild b/sys-libs/libudev-compat/libudev-compat-186-r1.ebuild
index d732f6780be5..39c438bac36f 100644
--- a/sys-libs/libudev-compat/libudev-compat-186.ebuild
+++ b/sys-libs/libudev-compat/libudev-compat-186-r1.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=5
+EAPI=7
 
-inherit multilib multilib-minimal toolchain-funcs
+inherit multilib-minimal toolchain-funcs
 
 DESCRIPTION="Wrapper around libudev.so.1 for packages needing the old libudev.so.0"
 HOMEPAGE="https://www.gentoo.org/"
diff --git a/sys-libs/llvm-libunwind/Manifest b/sys-libs/llvm-libunwind/Manifest
index 1314dba5721a..662d6aa80995 100644
--- a/sys-libs/llvm-libunwind/Manifest
+++ b/sys-libs/llvm-libunwind/Manifest
@@ -1,11 +1,15 @@
 DIST libcxx-6.0.1.src.tar.xz 1552328 BLAKE2B 65a6addd04e530c2a72e8cba207282b9e9fafc01a594d7b11f63d10b6f88eca67a3cdf90b8055e410ede358d9be1f63fbe427f308e1337833447c0260d96e1c8 SHA512 c04f628b0924d76f035f615b59d19ce42dfc19c9a8eea4fe2b22a95cfe5a037ebdb30943fd741443939df5b4cf692bc1e51c840fefefbd134e3afbe2a75fe875
+DIST libcxx-7.0.0rc2.src.tar.xz 1654748 BLAKE2B 95664de42bfa6b77c5db32c092469c36e92b5eb9554bf381f761e04a29da1f413c1ead2ac93674a30ad9d743aa3cc9f22e5edebd043d16f903ed83901a743ae6 SHA512 c0b84400cb7694f7088b965cb0cac26853ecc485c775afbb0ad2cfdc53497eb95b76f917b16090372b77297e7f80372aef29023da564387be49e2f412efb5746
 DIST libcxxabi-6.0.1.src.tar.xz 528356 BLAKE2B b301b750b2928864d3fc51e66cf91aab6837636ec2bce706b9a97296ec96af4bd2e80b1bf80c9b4afe449335ee12bbdd1905433c27e1770e16bc306baf206927 SHA512 bbb4c7b412e295cb735f637df48a83093eef45ed5444f7766790b4b047f75fd5fd634d8f3a8ac33a5c1407bd16fd450ba113f60a9bcc1d0a911fe0c54e9c81f2
+DIST libcxxabi-7.0.0rc2.src.tar.xz 535948 BLAKE2B 02505fd0101d9be53c66f14f5aca7a99c3e4309d9979be1a5792f869ed8e72562e8f7a2fba222d2a121845d4425ff98444046e4edfe2023891ba80521ebc4a00 SHA512 fcb51c4005bb4b79426467c8d7128412c37b235518455fa57521e04df2d47fc97aa0bce10ebec4fe3f3097bb3657f56014258ca8c46c978e709927fcce27fd5c
 DIST libunwind-4.0.1.src.tar.xz 63388 BLAKE2B f49772beabaa8519a5f8dbbaef9c2d6554468a66b89a5f012946d59f772fe864809a5c95b726bcb4c059ca551a4eb023a88f4fa618756b34fef2058e272467e6 SHA512 8a0552a8ab830010d81420f4b778a3b831bff85b19bcce972958fc30e1ba5a2fa26a3deba499985a43dd7a103690775f6a20e7b3edda55f4eaff3541002d6b59
 DIST libunwind-5.0.2.src.tar.xz 72340 BLAKE2B 8a62bd91f6decae1a9a51df19f708fcdf72a6fe6e57a5848c5dd0d36ff2dc64db8a0b3af469cdd5e787b9301f2718df0981f91857ecbc7a5f5d95a1a053652bc SHA512 137c4b269bff053d532a373e9f696ca68ad0bbf606a18dc98597e00fcfc6ce21d74bc2a0c03b96444654d688fa97d544c6f6b70822fcf7e190ed96f193ddc6ba
 DIST libunwind-6.0.1.src.tar.xz 77036 BLAKE2B b6c293285896c8ff1f64bb56eee5a88b102b7ed9902d46436ee3cb79f204f230fd08a07d39c7fa9aeeddd093036f2bb9af38dd54268099ea9e51e12a71ff4adb SHA512 78568c28720abdd1f8471c462421df9965e05e1db048689d16ac85378716c4080ec1723af78e9f61d133b0ff82ac8c1f0dde7fd42d194485f62c1a17c02db37f
+DIST libunwind-7.0.0rc2.src.tar.xz 79412 BLAKE2B e6b955c8098180b0e0d712150e81a0df1e1a44a655a2029896594faf5e3af4cceb46f0e41f5970e8c2adcce8ae7a121afaea9751550983826ce0b11a9000b32c SHA512 bd82e9d68661d584e1670be4a1177ffe46c27b70e1a5942f797913a223aee171e0f0ef6b241afce1784cb8a7feff6de37373a10588ee38c743322f8048cca06b
 EBUILD llvm-libunwind-4.0.1.ebuild 1094 BLAKE2B dec5d0847983833e461635ac5711b5d253963650aed87678277bec86d1334ae9348d26605e20acf2a8d2405e891dd10c9303abf7d243ed86e36c8f3e3f12b83b SHA512 3fb7283eea0b4282c549d7cf2cee1aea0f9d28b7689f5b83a32893c32ebfabc703eb0328593109db96a86351b639bc3e60572c7de93fbed18dd359a14b352386
 EBUILD llvm-libunwind-5.0.2.ebuild 1094 BLAKE2B 3378498096da36b9cbd6e70c9f2646cf6215f6d964e0a991e389c33af1a1614bc0c0dd404b58141d64513a22709e1755c79f4466b3cf7b43515f623927f766f0 SHA512 cd9740fad0a59488d543fa2af2a2908457180840999d463071bb557d45214e0cf04069f922e90e0a3b3f8144b8966d2f3564c098561a2ae0511264d1eb2b104a
 EBUILD llvm-libunwind-6.0.1.ebuild 3742 BLAKE2B a2e7fc30c8084cf48c4fd795c78351081cd58408eb8f60fe8c09bf8b87196c9e4fbb471da223f36369a25eecd8cdd6d92abae5cd7544729c50c47c55f0232c6a SHA512 6367327da3e0fae97282370e2762382588daf6e59d9f8ec882d52b974cb9bcd5209dd1f37a7c9e94d15cc411f4212b94b332aac5dd3d652ebb38893f74df8391
+EBUILD llvm-libunwind-7.0.0_rc2.ebuild 3723 BLAKE2B 68f20b72456dc6982472d66057cdc197702c72947a99af3ea6f0e1ad68afab08e53eada76da1a0af252dfef347bebc6c6506d0d002158ab3a4a47c3f7918cc5e SHA512 651abd80b33fce62d8253fb061a589d5f726a9660ff4b674d2c75986373d53e1d0eaa45c6a255e0efd9666a5fd092e062c997c020582636e4059fa23e48304bc
 EBUILD llvm-libunwind-7.0.9999.ebuild 3885 BLAKE2B b4b67285b574900596fe96caaa7733569686e2ddf898eb506b509de25895798e5521377c06503c8206517016a11060913399584072758114b9f0ce9c9f00cf66 SHA512 0e47757fb33b1b59cd8d989953b34ec22f01f993ce5e91d3390551a6b8b83df7678c4e747f297dbd1c76a21f99d1a1309b024b754d60e9b8fe8b3e606bc3cec0
 EBUILD llvm-libunwind-9999.ebuild 3860 BLAKE2B 177f9e223b61e3bd3a6fec78ff0b3d2efa1220228d55f78eb41a200518441d8b617998f13642338e91ff3f56dd224c1e1382df5031060c1783440ad20223d069 SHA512 b0cdcbe531188ffa9f7e294136a9238a79441b0768144116784fbf3e647b3fef11eb6a4e5569f08e7e7092d4aec46843c15a1c2b3b96ec63ee64028a0fb29c83
 MISC metadata.xml 302 BLAKE2B 1cdee7813ed9a3766b2eddccd14f9e0576ba5cc7f812d7af4f35c8c2e5991790f3800c6473c37da90d72804832fd9af969a2e3bf7aa625f0d3a32da1dbcefacf SHA512 3afaef82e6a495a81e221524ae7604dc170ef5c103333728674faf0417c45ba7996118c10466eaa24f8feef9ed8f0fc60d535a5195462317d61c61a531c8a285
diff --git a/sys-libs/llvm-libunwind/llvm-libunwind-7.0.0_rc2.ebuild b/sys-libs/llvm-libunwind/llvm-libunwind-7.0.0_rc2.ebuild
new file mode 100644
index 000000000000..74e6856356b7
--- /dev/null
+++ b/sys-libs/llvm-libunwind/llvm-libunwind-7.0.0_rc2.ebuild
@@ -0,0 +1,143 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+: ${CMAKE_MAKEFILE_GENERATOR:=ninja}
+# (needed due to CMAKE_BUILD_TYPE != Gentoo)
+CMAKE_MIN_VERSION=3.7.0-r1
+PYTHON_COMPAT=( python{2_7,3_4,3_5,3_6} )
+inherit cmake-multilib llvm multiprocessing python-any-r1
+
+MY_P=libunwind-${PV/_/}.src
+LIBCXX_P=libcxx-${PV/_/}.src
+LIBCXXABI_P=libcxxabi-${PV/_/}.src
+
+DESCRIPTION="C++ runtime stack unwinder from LLVM"
+HOMEPAGE="https://github.com/llvm-mirror/libunwind"
+SRC_URI="https://prereleases.llvm.org/${PV/_//}/${MY_P}.tar.xz
+	test? (
+		https://prereleases.llvm.org/${PV/_//}/${LIBCXX_P}.tar.xz
+		https://prereleases.llvm.org/${PV/_//}/${LIBCXXABI_P}.tar.xz )"
+
+LICENSE="|| ( UoI-NCSA MIT )"
+SLOT="0"
+KEYWORDS=""
+IUSE="debug +static-libs test"
+RESTRICT="!test? ( test )"
+
+RDEPEND="!sys-libs/libunwind"
+# llvm-6 for new lit options
+DEPEND="
+	>=sys-devel/llvm-6
+	test? ( >=sys-devel/clang-3.9.0
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]') )"
+
+S=${WORKDIR}/${MY_P}
+
+# least intrusive of all
+CMAKE_BUILD_TYPE=RelWithDebInfo
+
+python_check_deps() {
+	has_version "dev-python/lit[${PYTHON_USEDEP}]"
+}
+
+pkg_setup() {
+	use test && python-any-r1_pkg_setup
+}
+
+src_unpack() {
+	default
+
+	if use test; then
+		mv "${LIBCXX_P}" libcxx || die
+		mv "${LIBCXXABI_P}" libcxxabi || die
+	fi
+}
+
+multilib_src_configure() {
+	local libdir=$(get_libdir)
+
+	local mycmakeargs=(
+		-DLLVM_LIBDIR_SUFFIX=${libdir#lib}
+		-DLIBUNWIND_ENABLE_ASSERTIONS=$(usex debug)
+		-DLIBUNWIND_ENABLE_STATIC=$(usex static-libs)
+		-DLLVM_INCLUDE_TESTS=$(usex test)
+
+		# support non-native unwinding; given it's small enough,
+		# enable it unconditionally
+		-DLIBUNWIND_ENABLE_CROSS_UNWINDING=ON
+	)
+	if use test; then
+		local clang_path=$(type -P "${CHOST:+${CHOST}-}clang" 2>/dev/null)
+		local jobs=${LIT_JOBS:-$(makeopts_jobs "${MAKEOPTS}" "$(get_nproc)")}
+
+		[[ -n ${clang_path} ]] || die "Unable to find ${CHOST}-clang for tests"
+
+		mycmakeargs+=(
+			-DLLVM_EXTERNAL_LIT="${EPREFIX}/usr/bin/lit"
+			-DLLVM_LIT_ARGS="-vv;-j;${jobs};--param=cxx_under_test=${clang_path}"
+			-DLIBUNWIND_LIBCXX_PATH="${WORKDIR}"/libcxx
+		)
+	fi
+
+	cmake-utils_src_configure
+}
+
+build_libcxxabi() {
+	local -x LDFLAGS="${LDFLAGS} -L${BUILD_DIR}/$(get_libdir)"
+	local CMAKE_USE_DIR=${WORKDIR}/libcxxabi
+	local BUILD_DIR=${BUILD_DIR}/libcxxabi
+	local mycmakeargs=(
+		-DLIBCXXABI_LIBDIR_SUFFIX=
+		-DLIBCXXABI_ENABLE_SHARED=ON
+		-DLIBCXXABI_ENABLE_STATIC=OFF
+		-DLIBCXXABI_USE_LLVM_UNWINDER=ON
+		-DLIBCXXABI_INCLUDE_TESTS=OFF
+
+		-DLIBCXXABI_LIBCXX_INCLUDES="${WORKDIR}"/libcxx/include
+		-DLIBCXXABI_LIBUNWIND_INCLUDES="${S}"/include
+	)
+
+	cmake-utils_src_configure
+	cmake-utils_src_compile
+}
+
+build_libcxx() {
+	local -x LDFLAGS="${LDFLAGS} -L${BUILD_DIR}/libcxxabi/lib -L${BUILD_DIR}/$(get_libdir)"
+	local CMAKE_USE_DIR=${WORKDIR}/libcxx
+	local BUILD_DIR=${BUILD_DIR}/libcxx
+	local mycmakeargs=(
+		-DLIBCXX_LIBDIR_SUFFIX=
+		-DLIBCXX_ENABLE_SHARED=ON
+		-DLIBCXX_ENABLE_STATIC=OFF
+		-DLIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF
+		-DLIBCXXABI_USE_LLVM_UNWINDER=ON
+		-DLIBCXX_CXX_ABI=libcxxabi
+		-DLIBCXX_CXX_ABI_INCLUDE_PATHS="${WORKDIR}"/libcxxabi/include
+		-DLIBCXX_ENABLE_ABI_LINKER_SCRIPT=OFF
+		-DLIBCXX_HAS_MUSL_LIBC=$(usex elibc_musl)
+		-DLIBCXX_HAS_GCC_S_LIB=OFF
+		-DLIBCXX_INCLUDE_TESTS=OFF
+	)
+
+	cmake-utils_src_configure
+	cmake-utils_src_compile
+}
+
+multilib_src_test() {
+	# build local copies of libc++ & libc++abi for testing to avoid
+	# circular deps
+	build_libcxxabi
+	build_libcxx
+	mv "${BUILD_DIR}"/libcxx*/lib/libc++* "${BUILD_DIR}/$(get_libdir)/" || die
+
+	cmake-utils_src_make check-unwind
+}
+
+multilib_src_install() {
+	cmake-utils_src_install
+
+	# install headers like sys-libs/libunwind
+	doheader "${S}"/include/*.h
+}