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152 lines
3.8 KiB
152 lines
3.8 KiB
# Copyright 1999-2023 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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PYTHON_COMPAT=( python3_{10..12} )
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inherit flag-o-matic cmake-multilib linux-info llvm llvm.org
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inherit python-single-r1 toolchain-funcs
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DESCRIPTION="OpenMP runtime library for LLVM/clang compiler"
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HOMEPAGE="https://openmp.llvm.org"
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LICENSE="Apache-2.0-with-LLVM-exceptions || ( UoI-NCSA MIT )"
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SLOT="0/${LLVM_SOABI}"
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KEYWORDS=""
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IUSE="
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+debug gdb-plugin hwloc offload ompt test
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llvm_targets_AMDGPU llvm_targets_NVPTX
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"
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REQUIRED_USE="
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gdb-plugin? ( ${PYTHON_REQUIRED_USE} )
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"
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RESTRICT="!test? ( test )"
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RDEPEND="
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gdb-plugin? ( ${PYTHON_DEPS} )
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hwloc? ( >=sys-apps/hwloc-2.5:0=[${MULTILIB_USEDEP}] )
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offload? (
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dev-libs/libffi:=[${MULTILIB_USEDEP}]
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~sys-devel/llvm-${PV}[${MULTILIB_USEDEP}]
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llvm_targets_AMDGPU? ( dev-libs/rocr-runtime:= )
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)
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"
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# tests:
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# - dev-python/lit provides the test runner
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# - sys-devel/llvm provide test utils (e.g. FileCheck)
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# - sys-devel/clang provides the compiler to run tests
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DEPEND="
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${RDEPEND}
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"
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BDEPEND="
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dev-lang/perl
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offload? (
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llvm_targets_AMDGPU? ( sys-devel/clang )
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llvm_targets_NVPTX? ( sys-devel/clang )
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virtual/pkgconfig
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)
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test? (
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${PYTHON_DEPS}
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$(python_gen_cond_dep '
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dev-python/lit[${PYTHON_USEDEP}]
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')
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sys-devel/clang
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)
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"
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LLVM_COMPONENTS=( openmp cmake llvm/include )
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llvm.org_set_globals
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kernel_pds_check() {
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if use kernel_linux && kernel_is -lt 4 15 && kernel_is -ge 4 13; then
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local CONFIG_CHECK="~!SCHED_PDS"
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local ERROR_SCHED_PDS="\
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PDS scheduler versions >= 0.98c < 0.98i (e.g. used in kernels >= 4.13-pf11
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< 4.14-pf9) do not implement sched_yield() call which may result in horrible
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performance problems with libomp. If you are using one of the specified
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kernel versions, you may want to disable the PDS scheduler."
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check_extra_config
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fi
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}
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pkg_pretend() {
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kernel_pds_check
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}
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pkg_setup() {
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use offload && LLVM_MAX_SLOT=${LLVM_MAJOR} llvm_pkg_setup
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if use gdb-plugin || use test; then
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python-single-r1_pkg_setup
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fi
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}
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multilib_src_configure() {
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# LTO causes issues in other packages building, #870127
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filter-lto
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# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
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use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
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local build_omptarget=OFF
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# upstream disallows building libomptarget when sizeof(void*) != 8
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if use offload &&
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"$(tc-getCC)" ${CFLAGS} ${CPPFLAGS} -c -x c - -o /dev/null \
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<<-EOF &>/dev/null
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int test[sizeof(void *) == 8 ? 1 : -1];
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EOF
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then
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build_omptarget=ON
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fi
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local libdir="$(get_libdir)"
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local mycmakeargs=(
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-DOPENMP_LIBDIR_SUFFIX="${libdir#lib}"
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-DLIBOMP_USE_HWLOC=$(usex hwloc)
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-DLIBOMP_OMPD_GDB_SUPPORT=$(multilib_native_usex gdb-plugin)
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-DLIBOMP_OMPT_SUPPORT=$(usex ompt)
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-DOPENMP_ENABLE_LIBOMPTARGET=${build_omptarget}
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# do not install libgomp.so & libiomp5.so aliases
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-DLIBOMP_INSTALL_ALIASES=OFF
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# disable unnecessary hack copying stuff back to srcdir
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-DLIBOMP_COPY_EXPORTS=OFF
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# prevent trying to access the GPU
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-DLIBOMPTARGET_AMDGPU_ARCH=LIBOMPTARGET_AMDGPU_ARCH-NOTFOUND
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)
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if [[ ${build_omptarget} == ON ]]; then
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if has "${CHOST%%-*}" aarch64 powerpc64le x86_64; then
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mycmakeargs+=(
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-DLIBOMPTARGET_BUILD_AMDGPU_PLUGIN=$(usex llvm_targets_AMDGPU)
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-DLIBOMPTARGET_BUILD_CUDA_PLUGIN=$(usex llvm_targets_NVPTX)
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)
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else
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mycmakeargs+=(
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-DLIBOMPTARGET_BUILD_AMDGPU_PLUGIN=OFF
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-DLIBOMPTARGET_BUILD_CUDA_PLUGIN=OFF
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)
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fi
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fi
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use test && mycmakeargs+=(
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# this project does not use standard LLVM cmake macros
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-DOPENMP_LLVM_LIT_EXECUTABLE="${EPREFIX}/usr/bin/lit"
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-DOPENMP_LIT_ARGS="$(get_lit_flags)"
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-DOPENMP_TEST_C_COMPILER="$(type -P "${CHOST}-clang")"
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-DOPENMP_TEST_CXX_COMPILER="$(type -P "${CHOST}-clang++")"
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)
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addpredict /dev/nvidiactl
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cmake_src_configure
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}
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multilib_src_test() {
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# respect TMPDIR!
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local -x LIT_PRESERVES_TMP=1
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cmake_build check-libomp
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}
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