[jira] [Assigned] (ARROW-627) [C++] Compatibility macros for exported extern template class declarations

["Wes McKinney (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney reassigned ARROW-627:
----------------------------------

         Assignee: Wes McKinney
    Fix Version/s: 0.3.0

PR: https://github.com/apache/arrow/pull/447

> [C++] Compatibility macros for exported extern template class declarations
> --------------------------------------------------------------------------
>
>                 Key: ARROW-627
>                 URL: https://issues.apache.org/jira/browse/ARROW-627
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Wes McKinney
>            Assignee: Wes McKinney
>             Fix For: 0.3.0
>
>
> See all the compiler warnings in our Windows builds
> https://ci.appveyor.com/project/ApacheSoftwareFoundation/arrow/build/1.0.652
> Also, consider the hacks we have around gcc/clang disagreement about visibility about the use of extern template:
> https://github.com/apache/arrow/blob/master/cpp/src/arrow/array.h#L508
> I suspect we may want some macros to help with compiler differences about such issues, possibly to go in https://github.com/apache/arrow/blob/master/cpp/src/arrow/util/visibility.h



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