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CI Use conda-forge's openmp in osx to build wheels #22109

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Merged
merged 2 commits into from
Jan 3, 2022
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CI Use conda-forge's openmp in osx to build wheels #22109

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3a14252
CI Use conda for openmp for osx [cd build]
thomasjpfan Jan 1, 2022
f714335
CI Use empty env with only libomp [cd build]
thomasjpfan Jan 1, 2022
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18 changes: 10 additions & 8 deletions build_tools/github/build_wheels.sh
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Expand Up @@ -7,30 +7,32 @@ set -x
if [[ "$RUNNER_OS" == "macOS" ]]; then
# Make sure to use a libomp version binary compatible with the oldest
# supported version of the macos SDK as libomp will be vendored into the
# scikit-learn wheels for macos. The list of binaries are in
# https://packages.macports.org/libomp/.
# scikit-learn wheels for macos.

if [[ "$CIBW_BUILD" == *-macosx_arm64 ]]; then
# arm64 builds must cross compile because CI is on x64
export PYTHON_CROSSENV=1
# SciPy requires 12.0 on arm to prevent kernel panics
# https://github.com/scipy/scipy/issues/14688
# We use the same deployment target to match SciPy.
export MACOSX_DEPLOYMENT_TARGET=12.0
wget https://packages.macports.org/libomp/libomp-11.0.1_0.darwin_20.arm64.tbz2 -O libomp.tbz2
OPENMP_URL="https://anaconda.org/conda-forge/llvm-openmp/11.1.0/download/osx-arm64/llvm-openmp-11.1.0-hf3c4609_1.tar.bz2"
else
# Currently, the oldest supported macos version is: High Sierra / 10.13.
# Note that Darwin_17 == High Sierra / 10.13.
export MACOSX_DEPLOYMENT_TARGET=10.13
wget https://packages.macports.org/libomp/libomp-11.0.1_0+universal.darwin_17.i386-x86_64.tbz2 -O libomp.tbz2
OPENMP_URL="https://anaconda.org/conda-forge/llvm-openmp/11.1.0/download/osx-64/llvm-openmp-11.1.0-hda6cdc1_1.tar.bz2"
fi
sudo tar -C / -xvjf libomp.tbz2 opt

sudo conda create -n build $OPENMP_URL
PREFIX="/usr/local/miniconda/envs/build"

export CC=/usr/bin/clang
export CXX=/usr/bin/clang++
export CPPFLAGS="$CPPFLAGS -Xpreprocessor -fopenmp"
export CFLAGS="$CFLAGS -I/opt/local/include/libomp"
export CXXFLAGS="$CXXFLAGS -I/opt/local/include/libomp"
export LDFLAGS="$LDFLAGS -Wl,-rpath,/opt/local/lib/libomp -L/opt/local/lib/libomp -lomp"
export CFLAGS="$CFLAGS -I$PREFIX/include"
export CXXFLAGS="$CXXFLAGS -I$PREFIX/include"
export LDFLAGS="$LDFLAGS -Wl,-rpath,$PREFIX/lib -L$PREFIX/lib -lomp"
fi

# The version of the built dependencies are specified
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