[jira] [Updated] (ARROW-9744) [Python] Failed to install on aarch64

["Kouhei Sutou (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-9744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kouhei Sutou updated ARROW-9744:
--------------------------------
    Summary: [Python] Failed to install on aarch64  (was: [Python] aarch64 Installation Error)

> [Python] Failed to install on aarch64
> -------------------------------------
>
>                 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
>            Assignee: Kouhei Sutou
>            Priority: Major
>         Attachments: cmake-info.txt, pyarrow_017.txt
>
>
> 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.
>  



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