[jira] [Assigned] (ARROW-8032) [C++] example parquet-arrow project includes broken FindParquet.cmake

["Neal Richardson (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-8032?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Neal Richardson reassigned ARROW-8032:
--------------------------------------

    Assignee: Krisztian Szucs

> [C++] example parquet-arrow project includes broken FindParquet.cmake
> ---------------------------------------------------------------------
>
>                 Key: ARROW-8032
>                 URL: https://issues.apache.org/jira/browse/ARROW-8032
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>    Affects Versions: 0.17.0
>         Environment: NA
>            Reporter: Tomasz Cheda
>            Assignee: Krisztian Szucs
>            Priority: Minor
>              Labels: beginner, easyfix
>   Original Estimate: 0.25h
>  Remaining Estimate: 0.25h
>
> The example project at [https://github.com/apache/arrow/tree/master/cpp/examples/parquet/parquet-arrow/cmake_modules] includes a broken version of FindParquet.cmake ( [https://github.com/apache/arrow/blob/master/cpp/examples/parquet/parquet-arrow/cmake_modules/FindParquet.cmake] )
> The other module is, correctly, a link to FindArrow.cmake in [https://github.com/apache/arrow/tree/master/cpp/cmake_modules]
> For the curious, the broken part is assuming that FindPkgConfig variables will be set if the module is found - this can be false if the include directory is /usr/include. This can be controlled by one of FindPkgConfig's config variables, but the default behaviour changes as of CMake 3.10. It then erroneously reports that Parquet has not been found.
> This is not a major bug, but I based my build files off of those in the example directory and it took me a LONG time to figure out the error. It can be really confusing for new users and is simple to fix.



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