emkornfield commented on a change in pull request #6985: URL: https://github.com/apache/arrow/pull/6985#discussion_r413575153
########## File path: cpp/cmake_modules/SetupCxxFlags.cmake ########## @@ -40,12 +40,13 @@ if(ARROW_CPU_FLAG STREQUAL "x86") set(CXX_SUPPORTS_SSE4_2 TRUE) else() set(ARROW_SSE4_2_FLAG "-msse4.2") - set(ARROW_AVX2_FLAG "-mavx2") + set(ARROW_AVX2_FLAG "-march=core-avx2") Review comment: hopefully this is acceptable change. I'm open to other suggestions on how to enable bmi2 (not for some reason using "-mbmi2 -mavx2" didn't seem to work for me, but I can try again. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org