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- #!/bin/bash
- #
- # Builds protobuf python including the C++ extension with aarch64 crosscompiler.
- # The outputs of this script are laid out so that we can later test them under an aarch64 emulator.
- # NOTE: This script is expected to run under the dockcross/manylinux2014-aarch64 docker image.
- set -ex
- PYTHON="/opt/python/cp38-cp38/bin/python"
- ./autogen.sh
- CXXFLAGS="-fPIC -g -O2" ./configure --host=aarch64
- make -j8
- # create a simple shell wrapper that runs crosscompiled protoc under qemu
- echo '#!/bin/bash' >protoc_qemu_wrapper.sh
- echo 'exec qemu-aarch64 "../src/protoc" "$@"' >>protoc_qemu_wrapper.sh
- chmod ugo+x protoc_qemu_wrapper.sh
- # PROTOC variable is by build_py step that runs under ./python directory
- export PROTOC=../protoc_qemu_wrapper.sh
- pushd python
- # NOTE: this step will use protoc_qemu_wrapper.sh to generate protobuf files.
- ${PYTHON} setup.py build_py
- # when crosscompiling for aarch64, --plat-name needs to be set explicitly
- # to end up with correctly named wheel file
- # the value should be manylinuxABC_ARCH and dockcross docker image
- # conveniently provides the value in the AUDITWHEEL_PLAT env
- plat_name_flag="--plat-name=$AUDITWHEEL_PLAT"
- # override the value of EXT_SUFFIX to make sure the crosscompiled .so files in the wheel have the correct filename suffix
- export PROTOCOL_BUFFERS_OVERRIDE_EXT_SUFFIX="$(${PYTHON} -c 'import sysconfig; print(sysconfig.get_config_var("EXT_SUFFIX").replace("-x86_64-linux-gnu.so", "-aarch64-linux-gnu.so"))')"
- # Build the python extension inplace to be able to python unittests later
- ${PYTHON} setup.py build_ext --cpp_implementation --compile_static_extension --inplace
- # Build the binary wheel (to check it with auditwheel)
- ${PYTHON} setup.py bdist_wheel --cpp_implementation --compile_static_extension $plat_name_flag
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