Greenie0701 commented on issue #40812:
URL: https://github.com/apache/arrow/issues/40812#issuecomment-3274508010
To build the Python version of Arrow (pyarrow) for Windows ARM64, follow
these steps:
- Set up Vcpkg and install all the required dependencies for Arrow. (Note:
Building the fully optimized pyarrow library may require around 126 libraries
via Vcpkg.)
- Install the latest stable LLVM toolchain for Windows on ARM (WoA) and
ensure you're using clang-cl for the build process.
- Avoid using MSVC, as it lacks support for several dispatch units used by
Arrow. Using clang-cl helps prevent compatibility issues and wasted effort.
- Build the C++ version of Arrow first using CMake. Use appropriate CMake
flags to configure the build for clang-cl.
- Set the PYARROW_HOME environment variable to the installation directory of
your C++ Arrow build.
- In the python directory of the Arrow source:
- Patch the setup.py script to ensure it uses clang-cl, just like you
did for the C++ build.
- Build pyarrow using the modified setup.py.
- Repair the generated wheel, ensuring all required DLLs are correctly
linked.
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