sys-libs/libomp: Backport -lm linking fix

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

2 files changed, 144 insertions, 0 deletions

diff --git a/sys-libs/libomp/Manifest b/sys-libs/libomp/Manifest
index 36ed81b8a026..48618d32c112 100644
--- a/sys-libs/libomp/Manifest
+++ b/sys-libs/libomp/Manifest
@@ -1,5 +1,6 @@
 DIST llvm-gentoo-patchset-12.0.1.tar.xz 5280 BLAKE2B 963d005bc7b636570be90eb841ac5bcaeb927538cc7de27683167111a17d6496677c7517de2ecfaf14b5d8ac22bad357be490b8a2ed9aba502fd5f447ecc99e9 SHA512 fc7c38e671555751650299c3a8bee44d5c7f26e11b68d5538c507fb7fe9ff2d349bdcd43bce90a448a747f082d523b3849d6bcda5e3ae2e998edcb926d6aa249
 DIST llvm-gentoo-patchset-13.0.1.tar.xz 6288 BLAKE2B 899222b962486e924e4f8a2b574d285531a3f87af9385ff68c81db92aa224a0cde6d4ee049b5405056bedb4b232b50e1d5840024071a4a215f6311853304c92d SHA512 b2805337f1deca626768a44c5e7ac9ed16e0c31bead1647d44a493a8123c1b8e8f1c8ceee3536bcc6fa87fdd3fcec408229f701adf30eff07e7ef9889b847b01
+DIST llvm-gentoo-patchset-14.0.6-r1.tar.xz 5960 BLAKE2B eadca4c09c216674fa27301670e2609a054d5d6df938502c37bb0e0c011cb7d9284eeb5eb223d3aba386ea2d6255d6a34d85913b976268c4d252764361669d81 SHA512 f4cb73c4a07206cae170cda5c2f2244431c0ce1f7f3c8b79a7253957b998cb4f3225737ec2a049d26eebabe9482378c7e9a5e6e069a6f96890ef8f85c599f07c
 DIST llvm-project-14.0.5.src.tar.xz 105617748 BLAKE2B a68a6eb58302702f560d1204eb97d34b695eb5df417ccefb50117dbd641ba3c3dda9e64c04506e646dd40c1151eb60b12843e206996ef74b35b2841b8dabafda SHA512 db5a7ea1149988c2aab4ed634f14e00bb9a8042089350b811f875e295ced7b5add80a11b91cad80ba0ba9801261502644a720021506483c14dfb1bc24a7f54d5
 DIST llvm-project-14.0.5.src.tar.xz.sig 566 BLAKE2B ecf66df5d0acb382c9d441aee053404254fa4087d57130b04bb496af9cbb71c59e82f0938f44953d7fd777524781d13d1327b6c64065cf45b177bc3ea0e5c3f2 SHA512 a785e38f11863a46de8766ff4495a73173479cdbd95dc539804b0381a7a834a409713dbaf441272a9cc2963a3c7015c95dc6f0dcfa745e8d6047b1ad5feacff7
 DIST llvm-project-14.0.6.src.tar.xz 105618228 BLAKE2B ee67c5407df8cef493b9c0004f15e428f22a536a17e5f4e3eb29a003b8a8ec0abe0fa3e072591161d5f30ef7d8867c1ce34d1b341ad858e93c00263499941a99 SHA512 6fc6eeb60fac698702d1aac495fc0161eb7216a1f8db2020af8fccec5837831f7cc20dc2a169bf4f0b5f520748280b4a86621f3697d622aa58faaa45dbfaad13
diff --git a/sys-libs/libomp/libomp-14.0.6-r1.ebuild b/sys-libs/libomp/libomp-14.0.6-r1.ebuild
new file mode 100644
index 000000000000..344b9b53e021
--- /dev/null
+++ b/sys-libs/libomp/libomp-14.0.6-r1.ebuild
@@ -0,0 +1,143 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+CMAKE_ECLASS=cmake
+PYTHON_COMPAT=( python3_{8..10} )
+inherit cmake-multilib linux-info llvm llvm.org python-any-r1
+
+DESCRIPTION="OpenMP runtime library for LLVM/clang compiler"
+HOMEPAGE="https://openmp.llvm.org"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~ppc ~ppc64 ~riscv ~x86 ~amd64-linux ~x64-macos"
+IUSE="
+	cuda debug hwloc offload ompt test
+	llvm_targets_AMDGPU llvm_targets_NVPTX
+"
+RESTRICT="!test? ( test )"
+# CUDA works only with the x86_64 ABI
+REQUIRED_USE="
+	cuda? ( llvm_targets_NVPTX )
+	offload? ( cuda? ( abi_x86_64 ) )
+"
+
+RDEPEND="
+	hwloc? ( >=sys-apps/hwloc-2.5:0=[${MULTILIB_USEDEP}] )
+	offload? (
+		virtual/libelf:=[${MULTILIB_USEDEP}]
+		dev-libs/libffi:=[${MULTILIB_USEDEP}]
+		~sys-devel/llvm-${PV}[${MULTILIB_USEDEP}]
+		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}
+"
+BDEPEND="
+	dev-lang/perl
+	offload? (
+		llvm_targets_AMDGPU? ( sys-devel/clang )
+		llvm_targets_NVPTX? ( sys-devel/clang )
+		virtual/pkgconfig
+	)
+	test? (
+		$(python_gen_any_dep 'dev-python/lit[${PYTHON_USEDEP}]')
+		sys-devel/clang
+	)
+"
+
+LLVM_COMPONENTS=( openmp llvm/include )
+LLVM_PATCHSET=${PV}-r1
+llvm.org_set_globals
+
+python_check_deps() {
+	has_version "dev-python/lit[${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 offload && LLVM_MAX_SLOT=${PV%%.*} llvm_pkg_setup
+	use test && python-any-r1_pkg_setup
+}
+
+multilib_src_configure() {
+	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
+	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
+
+	local libdir="$(get_libdir)"
+	local mycmakeargs=(
+		-DOPENMP_LIBDIR_SUFFIX="${libdir#lib}"
+
+		-DLIBOMP_USE_HWLOC=$(usex hwloc)
+		-DLIBOMP_OMPT_SUPPORT=$(usex ompt)
+
+		-DOPENMP_ENABLE_LIBOMPTARGET=$(usex offload)
+
+		# do not install libgomp.so & libiomp5.so aliases
+		-DLIBOMP_INSTALL_ALIASES=OFF
+		# disable unnecessary hack copying stuff back to srcdir
+		-DLIBOMP_COPY_EXPORTS=OFF
+	)
+
+	if use offload; then
+		if has "${CHOST%%-*}" aarch64 powerpc64le x86_64; then
+			mycmakeargs+=(
+				-DCMAKE_DISABLE_FIND_PACKAGE_CUDA=$(usex !cuda)
+				-DLIBOMPTARGET_BUILD_AMDGCN_BCLIB=$(usex llvm_targets_AMDGPU)
+				-DLIBOMPTARGET_BUILD_NVPTX_BCLIB=$(usex llvm_targets_NVPTX)
+				# a cheap hack to force clang
+				-DLIBOMPTARGET_NVPTX_CUDA_COMPILER="$(type -P "${CHOST}-clang")"
+				# upstream defaults to looking for it in clang dir
+				# this fails when ccache is being used
+				-DLIBOMPTARGET_NVPTX_BC_LINKER="$(type -P llvm-link)"
+			)
+		else
+			mycmakeargs+=(
+				-DCMAKE_DISABLE_FIND_PACKAGE_CUDA=ON
+				-DLIBOMPTARGET_BUILD_AMDGCN_BCLIB=OFF
+				-DLIBOMPTARGET_BUILD_NVPTX_BCLIB=OFF
+			)
+		fi
+	fi
+
+	use test && mycmakeargs+=(
+		# this project does not use standard LLVM cmake macros
+		-DOPENMP_LLVM_LIT_EXECUTABLE="${EPREFIX}/usr/bin/lit"
+		-DOPENMP_LIT_ARGS="$(get_lit_flags)"
+
+		-DOPENMP_TEST_C_COMPILER="$(type -P "${CHOST}-clang")"
+		-DOPENMP_TEST_CXX_COMPILER="$(type -P "${CHOST}-clang++")"
+	)
+	addpredict /dev/nvidiactl
+	cmake_src_configure
+}
+
+multilib_src_test() {
+	# respect TMPDIR!
+	local -x LIT_PRESERVES_TMP=1
+
+	cmake_build check-libomp
+}