Krisztian Szucs created ARROW-14361:
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Summary: [C++] Define a MAX default value for ARROW_SIMD_LEVEL
Key: ARROW-14361
URL: https://issues.apache.org/jira/browse/ARROW-14361
Project: Apache Arrow
Issue Type: New Feature
Components: C++
Reporter: Krisztian Szucs
Fix For: 7.0.0
In order to enable {{ARROW_HAVE_NEON}} CMake flag on ARM architectures
{{ARROW_SIMD_LEVEL}} option must be set to not {{"NONE"}}, see
https://github.com/apache/arrow/blob/master/cpp/cmake_modules/SetupCxxFlags.cmake#L444
The default value for {{ARROW_SIMD_LEVEL}} is {{SSE4_2}} which is a bit
misleading on ARM64, it should rather be {{NEON}} which is not listed as a
valid option for {{ARROW_SIMD_LEVEL}}. We may have a {{"MAX"}} default value
similarly to the {{ARROW_RUNTIME_SIMD_LEVEL}} option, see
https://github.com/apache/arrow/blob/master/cpp/cmake_modules/DefineOptions.cmake#L115
Original github comment:
https://github.com/apache/arrow/pull/11433#discussion_r729852835
cc [~yibocai] [~apitrou]
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