[jira] [Created] (ARROW-16914) [Docs][C++] Add example of using ExternalProject_Add to use Arrow

["Will Jones (Jira)" <ji...@apache.org>]

Will Jones created ARROW-16914:
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             Summary: [Docs][C++] Add example of using ExternalProject_Add to use Arrow
                 Key: ARROW-16914
                 URL: https://issues.apache.org/jira/browse/ARROW-16914
             Project: Apache Arrow
          Issue Type: Improvement
          Components: C++, Documentation
    Affects Versions: 8.0.0
            Reporter: Will Jones


We've [given advice|https://stackoverflow.com/a/59939033/2048858] to use {{ExternalProject_Add}} to build Arrow from source within a users CMake project. (Correct me if I am wrong that that is the preferred method now.) But I found it non-trivial to implement this.

We should add a simple example of doing this to the User Guide. We should also mention that we don't support {{add_subdirectory}} as that seems to be a common gotcha as well.

This might overlap with ARROW-9740, but I don't quite understand what that issue is proposing.



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