[jira] [Updated] (ARROW-4611) [C++] Rework CMake third-party logic

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-4611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-4611:
----------------------------------
    Labels: pull-request-available  (was: )

> [C++] Rework CMake third-party logic
> ------------------------------------
>
>                 Key: ARROW-4611
>                 URL: https://issues.apache.org/jira/browse/ARROW-4611
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++, Packaging
>            Reporter: Uwe L. Korn
>            Assignee: Uwe L. Korn
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.13.0
>
>
> Instead of the current approach we are taking with the {{*_HOME}} variables, we should use more CMake features and also give users of Arrow a more high-level control. This is going to be a rather lengthy issue with a lot of subtasks.
>  * Let the user decide on the top-level how dependencies should be handled. At the moment I can think of the following modes:
>  ** AUTO: Guess the packaging system we're running in, use this where possible, otherwise build the dependencies through the {{ExternalProject}} logic.
>  ** BUNDLED: Don't use any dependencies, build them all through {{ExternalProject}}
>  ** SYSTEM: Use CMake's {{find_package}} and {{find_library}} without any custom paths. If packages are on non-default locations, let the user indicate it from the outside using the {{*_ROOT}} variables.
>  ** CONDA: Same as SYSTEM but set all {{*_ROOT}} variables to {{ENV\{CONDA_PREFIX\}}}.
>  ** BREW: This uses SYSTEM but asks {{brew}} for some dependencies for their installation prefix.
>  * prefer dynamic linkage where possible
>  * Use {{pkg-config}} and {{*Targets.cmake}} files in projects that publish these
>  * Ensure that the necessary integration tests are in place (Fedora, Debian, Ubuntu, Alpine)
>  * Integration tests that Arrow's {{*Targets.cmake}} and {{arrow.pc}} work.



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