[jira] [Commented] (ARROW-9894) [C++] Arrow 1.0.1 fails to build on Arch Linux (gtest.cc:4388:13: error: ignoring return value of 'size_t fwrite(const void*, size_t, size_t, FILE*)'...

["Keith Hughitt (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-9894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17188735#comment-17188735 ] 

Keith Hughitt commented on ARROW-9894:
--------------------------------------

Hi Neal,

Thanks for the quick response and suggestions!

I tried your first suggestion and install gtest (and also gmock), and removed the "-DGTest_SOURCE=BUNDLED" flag and that did the trick!

I'll report the issue downstream to the AUR package maintainer.

I'm going to close this issue since the original problem appears to relate more to a build dependency than to arrow itself. Feel free to re-open it if you think it's worth tracking / trying to add a check or work-around to the CMakefile though.

> [C++] Arrow 1.0.1 fails to build on Arch Linux (gtest.cc:4388:13: error: ignoring return value of 'size_t fwrite(const void*, size_t, size_t, FILE*)'...
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-9894
>                 URL: https://issues.apache.org/jira/browse/ARROW-9894
>             Project: Apache Arrow
>          Issue Type: Bug
>    Affects Versions: 1.0.1
>         Environment: - Arch Linux 5.8.3
> - Arrow 1.0.1
> - CMake 3.18.2
>            Reporter: Keith Hughitt
>            Priority: Major
>
> When attempting to build Arrow 1.0.1 for Arch Linux, an error is encountered that appears to be related to a warning generated in a test:
> ```
> [  0%] Performing build step for 'googletest_ep'
> CMake Error at /mnt/storage/software/arrow/src/build/googletest_ep-prefix/src/googletest_ep-stamp/googletest_ep-build-RELEASE.cmake:37 (message):
>   Command failed: 2
>    'make'
>   See also
>     /mnt/storage/software/arrow/src/build/googletest_ep-prefix/src/googletest_ep-stamp/googletest_ep-build-*.log
> -- stdout output is:
> [ 12%] Building CXX object googlemock/gtest/CMakeFiles/gtest.dir/src/gtest-all.cc.o
> -- stderr output is:
> In file included from /mnt/storage/software/arrow/src/build/googletest_ep-prefix/src/googletest_ep/googletest/src/gtest-all.cc:41:0:
> /mnt/storage/software/arrow/src/build/googletest_ep-prefix/src/googletest_ep/googletest/src/gtest.cc: In constructor 'testing::internal::ScopedPrematureExitFile::ScopedPrematureExitFile(const char*)':
> /mnt/storage/software/arrow/src/build/googletest_ep-prefix/src/googletest_ep/googletest/src/gtest.cc:4388:13: error: ignoring return value of 'size_t fwrite(const void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Werror=unused-result]
>        fwrite("0", 1, 1, pfile);
>        ~~~~~~^~~~~~~~~~~~~~~~~~
> cc1plus: all warnings being treated as errors
> make[5]: *** [googlemock/gtest/CMakeFiles/gtest.dir/build.make:82: googlemock/gtest/CMakeFiles/gtest.dir/src/gtest-all.cc.o] Error 1
> make[4]: *** [CMakeFiles/Makefile2:219: googlemock/gtest/CMakeFiles/gtest.dir/all] Error 2
> make[3]: *** [Makefile:160: all] Error 2
> CMake Error at /mnt/storage/software/arrow/src/build/googletest_ep-prefix/src/googletest_ep-stamp/googletest_ep-build-RELEASE.cmake:47 (message):
>   Stopping after outputting logs.
> make[2]: *** [CMakeFiles/googletest_ep.dir/build.make:131: googletest_ep-prefix/src/googletest_ep-stamp/googletest_ep-build] Error 1
> make[1]: *** [CMakeFiles/Makefile2:1035: CMakeFiles/googletest_ep.dir/all] Error 2
> make: *** [Makefile:160: all] Error 2
> ```
> Attempted installation via PKGBUILD: https://aur.archlinux.org/packages/arrow/



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