sys-libs/libomp: Bump to 8.0.0rc3

Signed-off-by: Michał Górny <mgorny@gentoo.org>

sys-libs/libomp/Manifest

@@ -3,3 +3,4 @@ DIST openmp-5.0.2.src.tar.xz 2081560 BLAKE2B fbe41c6aaf4c8e961253609a598bec531ab
 DIST openmp-6.0.1.src.tar.xz 2048320 BLAKE2B 08b3a7051c985903f78331f55a1c6e928399b87c862c43c991e9bf78b66b6e412fc96f202b82c051176dbbe02422f8ceb7414f44ea8f3522f418e515c0f70c62 SHA512 abb956583e5d11d0c6f6d97183c081d658616a74933be884a591eaa3d8c4bb04f08f02016d2c86d7384c7ff1aa44fb949b0d967fc0ff50e3132aaba412e9add8
 DIST openmp-7.0.1.src.tar.xz 909316 BLAKE2B b8adbf67738b8d2d2d42b45b24aabd2f5e65a7b9cdda0d4a62511808c2101d9bb925b4904a9ecb98f77a1b7f38f13408fea6f724748183f9d5f5419c3fdeac54 SHA512 2062db8b87bce2c130bab528a6d654cb05b3de7641737552fc263724ceaa5e322afc2787796a0bddcda8d1bdf913a49f5a0180abcc57f8842b7e8ea8df4d6f51
 DIST openmp-8.0.0rc2.src.tar.xz 934468 BLAKE2B e3496bc58a86282ac75417b98675f490c7a4c94038d5e79ef48b14ad4adcfcadc883caade3f9b8f6d189250cfb770a63984baca982e1295058f200494aaaf0f7 SHA512 56c73affd5533c40123464218d225a25f47fdf93fe3e1288f6c4ff6743ee745929ecc881334ded2aae193786366397a9add60aa6b3675631548980f80d9ac6c9
+DIST openmp-8.0.0rc3.src.tar.xz 934392 BLAKE2B 13829d48aacd56eb16cbe765445d53aba6561dbcf4a58ff18ad97354791dc212f3653946dfc62a59303c3b0b5e4fe4a774b3d7fc993d8368ca8ace2bd6a22dfb SHA512 a9f129417bf380497cabb9fd9d935fbb737a69e1e3cbc5c93f1037df5ef7e78e5da2a9d8fbdba8625727e9739050840daaaa61fe24ee58a2fc91fe53b69d7b93

sys-libs/libomp/libomp-8.0.0_rc3.ebuild

@@ -0,0 +1,115 @@
+# Copyright 1999-2019 Gentoo Authors
+# 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-${PV/_/}.src.tar.xz"
+
+# Additional licenses:
+# - MIT-licensed Intel code,
+# - LLVM Software Grant from Intel.
+
+LICENSE="|| ( UoI-NCSA MIT ) MIT LLVM-Grant"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc64 ~x86 ~amd64-fbsd ~amd64-linux ~x64-macos"
+IUSE="cuda hwloc kernel_linux offload ompt test"
+# CUDA works only with the x86_64 ABI
+REQUIRED_USE="offload? ( cuda? ( abi_x86_64 ) )"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	hwloc? ( sys-apps/hwloc:0=[${MULTILIB_USEDEP}] )
+	offload? (
+		virtual/libelf:=[${MULTILIB_USEDEP}]
+		virtual/libffi:=[${MULTILIB_USEDEP}]
+		cuda? ( dev-util/nvidia-cuda-toolkit:= )
+	)"
+# 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
+}