Mac M1 Support

[itsjohnward]

Incorporated @NikZak's suggestion from #385 (comment) and also removed the emmintrin header on arm64 ARM per https://reviews.llvm.org/D109686#change-qMIOtz4d3wgp.

Tested like so:

$ SDKROOT=$(xcrun --sdk macosx --show-sdk-path) pip install -e .[test] && pytest .
...
===================================== test session starts ======================================
platform darwin -- Python 3.9.9, pytest-6.2.5, py-1.11.0, pluggy-1.0.0
rootdir: /Users/john/bottleneck, configfile: setup.cfg
plugins: hypothesis-6.34.1
collected 209 items                                                                            

bottleneck/tests/input_modification_test.py .............................                [ 13%]
bottleneck/tests/list_input_test.py .............................                        [ 27%]
bottleneck/tests/memory_test.py .                                                        [ 28%]
bottleneck/tests/move_test.py .................................                          [ 44%]
bottleneck/tests/nonreduce_axis_test.py .........................                        [ 55%]
bottleneck/tests/nonreduce_test.py ..............                                        [ 62%]
bottleneck/tests/reduce_test.py ........................................................ [ 89%]
...                                                                                      [ 90%]
bottleneck/tests/scalar_input_test.py ..................                                 [ 99%]
bottleneck/tests/test_template.py .                                                      [100%]

======================================= warnings summary =======================================
bottleneck/tests/scalar_input_test.py::test_scalar_input[ss]
  /Users/john/bottleneck/bottleneck/slow/reduce.py:87: RuntimeWarning: overflow encountered in multiply
    y = np.multiply(a, a).sum(axis)

-- Docs: https://docs.pytest.org/en/stable/warnings.html
=============================== 209 passed, 1 warning in 32.31s ================================

[rdbisme]

Hello, thanks. It would be great if you could rebase this on the new master. I think a dependency on this might be to have aarch64 and arm7v CI tests.

[ahysing]

Hi guys. I hope we can this one done and merged. Support for apple silicon is becoming more and more important. I looked at @rdbisme comment. I agree. CI tests are important. However GitHub actions is not planning ARM64 support actions/runner-images#2187

can we imagine cross compiling on AMD64 for ARM64? I want to explore all options at this point.

[rdbisme]

Hi guys. I hope we can this one done and merged. Support for apple silicon is becoming more and more important. I looked at @rdbisme comment. I agree. CI tests are important. However GitHub actions is not planning ARM64 support actions/runner-images#2187

can we imagine cross compiling on AMD64 for ARM64? I want to explore all options at this point.

I think there are two solutions:

• Crosscompiling (not sure there's something established enough that allows easy cross-compile of python packages)
• Build the package under KVM / Qemu. I think I saw some Github actions using this approach.

I'm not a ninja with Github Actions, but I think I might make this work on Gitlab CI. If anyone has any inputs, feel free to contribute to the discussion.