Neal Richardson created ARROW-10321:
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Summary: [C++] Building AVX512 code when we should not
Key: ARROW-10321
URL: https://issues.apache.org/jira/browse/ARROW-10321
Project: Apache Arrow
Issue Type: Bug
Components: C++
Reporter: Neal Richardson
On https://github.com/autobrew/homebrew-core/pull/31, where we are packaging
Arrow for an old macOS SDK version, we found what I believe are 2 different
problems:
1. The check for AVX512 support was returning true when in fact the compiler
did not support it
2. Even when we manually set the runtime SIMD level to less-than-AVX512, it was
still trying to compile one of the AVX512 files, which failed. I added a patch
that made that file conditional, but there's probably a proper cmake way to
tell it not to compile that file at all
cc [~yibo] [~apitrou]
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