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Update libomp build to LLVM 23.1.2 #113

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Merged
Czaki merged 2 commits into from
Sep 27, 2026
Merged

Update libomp build to LLVM 23.1.2 #113

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c2b004d
Update libomp build to LLVM 23.1.2
claude Sep 27, 2026
78f55ec
Set macOS deployment target to 10.15 for libomp 23
claude Sep 27, 2026
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10 changes: 6 additions & 4 deletions build_utils/build_libomp.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -2,16 +2,18 @@
set -euo pipefail
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
build_dir=${DIR}/libs_build
LLVM_VERSION=${LLVM_VERSION:-19.1.1}
LLVM_VERSION=${LLVM_VERSION:-23.1.2}
INSTALL_CMD=${INSTALL_CMD:-"sudo make install"}

echo MACOSX_DEPLOYMENT_TARGET $MACOSX_DEPLOYMENT_TARGET
echo MACOSX_DEPLOYMENT_TARGET ${MACOSX_DEPLOYMENT_TARGET:-}

git clone --depth 1 --branch llvmorg-${LLVM_VERSION} https://github.com/llvm/llvm-project
pushd llvm-project/openmp
pushd llvm-project
# The legacy standalone build (cmake llvm-project/openmp) was removed in LLVM 23,
# openmp has to be built through the runtimes directory.
mkdir build
cd build
cmake -DCMAKE_C_COMPILER=${CC:-clang} -DCMAKE_CXX_COMPILER=${CXX:-clang++} ${CMAKE_FLAGS:-} ..
cmake -DCMAKE_C_COMPILER=${CC:-clang} -DCMAKE_CXX_COMPILER=${CXX:-clang++} -DLLVM_ENABLE_RUNTIMES=openmp ${CMAKE_FLAGS:-} ../runtimes
make ${MAKE_FLAGS:-}
${INSTALL_CMD}

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2 changes: 2 additions & 0 deletions pyproject.toml
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Expand Up @@ -133,6 +133,8 @@ build = "*64"
enable = ["pypy"]

[tool.cibuildwheel.macos]
# libomp (LLVM 23) uses aligned_alloc, available since macOS 10.15
environment = { MACOSX_DEPLOYMENT_TARGET = "10.15" }
before-all = [
"set",
"bash {project}/build_utils/build_libomp.sh",
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