Matthew Meen created ARROW-9744: ----------------------------------- Summary: [Python] aarch64 Installation Error Key: ARROW-9744 URL: https://issues.apache.org/jira/browse/ARROW-9744 Project: Apache Arrow Issue Type: Bug Components: Python Affects Versions: 0.17.1 Environment: AWS m6g (ARM64 'Graviton2' CPU): Features : fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm lrcpc dcpop asimddp ssbs CPU implementer : 0x41 CPU architecture: 8 CPU variant : 0x3 CPU part : 0xd0c CPU revision : 1
OS: Linux version 5.3.0-1032-aws (buildd@bos02-arm64-053) (gcc version 7.5.0 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)) #34~18.04.2-Ubuntu SMP Fri Jul 24 10:03:03 UTC 2020 Reporter: Matthew Meen My team is attempting to migrate some workloads from x86-64 to ARM64, a blocker for this is PyArrow failing to install. `pip install pyarrow` fails to build the wheel as -march isn't correctly resolved: {{ -- System processor: aarch64}} {{ -- Performing Test CXX_SUPPORTS_ARMV8_ARCH}} {{ -- Performing Test CXX_SUPPORTS_ARMV8_ARCH - Failed}} {{ -- Arrow build warning level: PRODUCTION}} {{ CMake Error at cmake_modules/SetupCxxFlags.cmake:338 (message):}} {{ Unsupported arch flag: -march=.}} It's possible to get the build to work after editing `cmake_modules/SetupCxxFlags.cmake` to force ARROW_ARMV8_ARCH_FLAG to end up as an architecture such as 'armv8-a' - although some more elaborate logic is really needed to pick up the correct extensions. I can see that there have been a number of items discussed in the past both on Jira and in GitHub issues ranging from simple fixes to the cmake script to more elaborate fixes cross-product for arch detection - but I wasn't able to discern how the project wishes to proceed. With AWS pushing their ARM-based instances heavily at this point I would advocate for picking a direction before an influx of new issues. -- This message was sent by Atlassian Jira (v8.3.4#803005)