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152 lines
3.8 KiB
Bash
152 lines
3.8 KiB
Bash
# Copyright 1999-2025 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_{11..14} )
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inherit cmake flag-o-matic llvm.org python-any-r1 toolchain-funcs
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DESCRIPTION="OpenMP offloading support"
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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/${LLVM_SOABI}"
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KEYWORDS="amd64 arm64 ppc64"
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IUSE="+debug ompt test llvm_targets_AMDGPU llvm_targets_NVPTX"
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RESTRICT="!test? ( test )"
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RDEPEND="
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dev-libs/libffi:=
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~llvm-core/llvm-${PV}
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~llvm-runtimes/openmp-${PV}[ompt?]
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llvm_targets_AMDGPU? ( dev-libs/rocr-runtime:= )
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"
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DEPEND="
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${RDEPEND}
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"
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# tests:
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# - dev-python/lit provides the test runner
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# - llvm-core/llvm provide test utils (e.g. FileCheck)
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# - llvm-core/clang provides the compiler to run tests
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BDEPEND="
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dev-lang/perl
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virtual/pkgconfig
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llvm_targets_AMDGPU? ( llvm-core/clang[llvm_targets_AMDGPU] )
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llvm_targets_NVPTX? ( llvm-core/clang[llvm_targets_NVPTX] )
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test? (
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$(python_gen_any_dep '
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dev-python/lit[${PYTHON_USEDEP}]
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')
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llvm-core/clang
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)
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"
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# TODO: can it be fixed to compile with gcc?
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BDEPEND+="
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llvm-core/clang
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"
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LLVM_COMPONENTS=( offload cmake runtimes/cmake libc/shared )
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LLVM_TEST_COMPONENTS=( openmp/cmake )
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llvm.org_set_globals
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pkg_pretend() {
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if [[ ${LLVM_ALLOW_GPU_TESTING} ]]; then
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ewarn "LLVM_ALLOW_GPU_TESTING set. This package will run tests against your"
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ewarn "GPU if it is supported. Note that these tests may be flaky, fail or"
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ewarn "hang, or even cause your GPU to crash (requiring a reboot)."
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fi
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}
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python_check_deps() {
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python_has_version "dev-python/lit[${PYTHON_USEDEP}]"
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}
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pkg_setup() {
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if use test; then
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python-any-r1_pkg_setup
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fi
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}
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src_configure() {
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# TODO
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local -x CC=${CHOST}-clang
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local -x CXX=${CHOST}-clang++
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strip-unsupported-flags
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# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
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use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
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local libdir="$(get_libdir)"
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local ffi_cflags=$($(tc-getPKG_CONFIG) --cflags-only-I libffi)
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local ffi_ldflags=$($(tc-getPKG_CONFIG) --libs-only-L libffi)
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local plugins="host"
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local build_devicertl=FALSE
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if has "${CHOST%%-*}" aarch64 powerpc64le x86_64; then
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if use llvm_targets_AMDGPU; then
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plugins+=";amdgpu"
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build_devicertl=TRUE
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fi
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if use llvm_targets_NVPTX; then
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plugins+=";cuda"
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build_devicertl=TRUE
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fi
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fi
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local mycmakeargs=(
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-DLLVM_ROOT="${ESYSROOT}/usr/lib/llvm/${LLVM_MAJOR}"
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-DOFFLOAD_LIBDIR_SUFFIX="${libdir#lib}"
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-DLIBOMPTARGET_PLUGINS_TO_BUILD="${plugins}"
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-DLIBOMPTARGET_OMPT_SUPPORT="$(usex ompt)"
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-DLIBOMPTARGET_BUILD_DEVICERTL_BCLIB="${build_devicertl}"
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# this breaks building static target libs
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-DBUILD_SHARED_LIBS=OFF
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-DFFI_INCLUDE_DIR="${ffi_cflags#-I}"
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-DFFI_LIBRARY_DIR="${ffi_ldflags#-L}"
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# force using shared libffi
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-DFFI_STATIC_LIBRARIES=NO
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)
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[[ ! ${LLVM_ALLOW_GPU_TESTING} ]] && mycmakeargs+=(
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# prevent trying to access the GPU
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-DLIBOMPTARGET_AMDGPU_ARCH=LIBOMPTARGET_AMDGPU_ARCH-NOTFOUND
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-DLIBOMPTARGET_NVPTX_ARCH=LIBOMPTARGET_NVPTX_ARCH-NOTFOUND
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)
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use test && mycmakeargs+=(
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# this project does not use standard LLVM cmake macros
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-DOPENMP_LLVM_LIT_EXECUTABLE="${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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# requires flang
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-DOPENMP_TEST_Fortran_COMPILER=
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)
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cmake_src_configure
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if [[ ${build_devicertl} == FALSE ]]; then
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# clang requires libomptarget.devicertl.a, but it can be empty
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> "${BUILD_DIR}"/libomptarget.devicertl.a || die
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fi
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}
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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-offload
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}
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src_install() {
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cmake_src_install
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if [[ ! -f ${ED}/usr/$(get_libdir)/libomptarget.devicertl.a ]]
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then
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dolib.a "${BUILD_DIR}"/libomptarget.devicertl.a
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fi
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}
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