[jira] [Created] (ARROW-11888) Cmake build of Apache Arrow fails using grpc's Findre2.cmake with "add_library cannot create imported target "RE2::re2" because another target with the same name already exists."

["Steven Smith (Jira)" <ji...@apache.org>]

Steven Smith created ARROW-11888:
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             Summary: Cmake build of Apache Arrow fails using grpc's Findre2.cmake with "add_library cannot create imported target "RE2::re2" because another target with the same name already exists."
                 Key: ARROW-11888
                 URL: https://issues.apache.org/jira/browse/ARROW-11888
             Project: Apache Arrow
          Issue Type: Bug
    Affects Versions: 3.0.0
         Environment: macOS 10.15.7 19H524
Xcode 12.4 12D4e
            Reporter: Steven Smith


I'm trying to create a MacPorts port of Apache Arrow. See [https://github.com/macports/macports-ports/pull/7791]

I'm using a library install of grpc, version 1.36.2. This issue is also observed with grpc version 1.35.0.

The grpc cmake file [Findre2.cmake|https://github.com/grpc/grpc/blob/master/cmake/modules/Findre2.cmake] causes this cmake error when building pyarrow.

I see that there is also a file Findre2.cmake created and installed in the cmake build of arrow. Also see this issue raised at grpc, [https://github.com/grpc/grpc/issues/25434]

Error:

:info:build CMake Error at /opt/local/lib/cmake/grpc/modules/Findre2.cmake:29 (add_library):
:info:build add_library cannot create imported target "re2::re2" because another target
:info:build with the same name already exists.

Related:
 * [http://mail-archives.apache.org/mod_mbox/arrow-dev/202009.mbox/%3C6ECB7D60-844F-410D-8840-24F2CE261752@yahoo.com%3E]
[http://mail-archives.apache.org/mod_mbox/arrow-jira/202009.mbox/%3CJIRA.13327607.1600156125000.372264.1600157460269@Atlassian.JIRA%3E]
 * [https://www.mail-archive.com/dev@arrow.apache.org/msg20631.html]
 * [https://github.com/macports/macports-ports/pull/7791]



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