[jira] [Assigned] (ARROW-13768) [R] Allow JSON to be an optional component

["Ian Cook (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-13768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ian Cook reassigned ARROW-13768:
--------------------------------

    Assignee: Ian Cook

> [R] Allow JSON to be an optional component
> ------------------------------------------
>
>                 Key: ARROW-13768
>                 URL: https://issues.apache.org/jira/browse/ARROW-13768
>             Project: Apache Arrow
>          Issue Type: Sub-task
>          Components: R
>    Affects Versions: 5.0.0
>            Reporter: Karl Dunkle Werner
>            Assignee: Ian Cook
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 4h 20m
>  Remaining Estimate: 0h
>
> JSON support requires RapidJSON, a third-party dependency that might not always be available. Particularly for offline static builds (ARROW-12981), it would be nice to allow {{ARROW_JSON=OFF}}.
> Here's the [relevant section|https://github.com/apache/arrow/blob/64bef2ad8d9cd2fea122cfa079f8ca3fea8cdf5d/cpp/cmake_modules/ThirdpartyToolchain.cmake#L290-L292] of {{ThirdpartyToolchain.cmake}}:
> {code:none}
> if(ARROW_JSON)
>   set(ARROW_WITH_RAPIDJSON ON)
> endif()
> {code}
> And the [relevant section|https://github.com/apache/arrow/blob/64bef2ad8d9cd2fea122cfa079f8ca3fea8cdf5d/r/inst/build_arrow_static.sh#L62] of the {{build_arrow_static.sh}} script.
> As Neal [mentioned|https://github.com/apache/arrow/pull/11001#discussion_r696723923], there's more to do than just replacing {{-DARROW_JSON=ON}} with {{-DARROW_JSON=$\{ARROW_JSON:-ON}}}. "We'll have to conditionally build some of the bindings like we do with dataset and parquet, and we'll have to conditionally skip tests."



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