[jira] [Updated] (ARROW-3659) [C++] Clang Travis build (matrix entry 2) might not actually be using clang

["Kouhei Sutou (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-3659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kouhei Sutou updated ARROW-3659:
--------------------------------
    Summary: [C++] Clang Travis build (matrix entry 2) might not actually be using clang  (was: Clang Travis build (matrix entry 2) might not actually be using clang)

> [C++] Clang Travis build (matrix entry 2) might not actually be using clang
> ---------------------------------------------------------------------------
>
>                 Key: ARROW-3659
>                 URL: https://issues.apache.org/jira/browse/ARROW-3659
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Philipp Moritz
>            Assignee: Philipp Moritz
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.12.0
>
>          Time Spent: 2.5h
>  Remaining Estimate: 0h
>
> See for example [https://travis-ci.org/apache/arrow/jobs/448267169:]
> {code:java}
> Setting environment variables from .travis.yml
> $ export ANACONDA_TOKEN=[secure]
> $ export ARROW_TRAVIS_USE_TOOLCHAIN=1
> $ export ARROW_TRAVIS_VALGRIND=1
> $ export ARROW_TRAVIS_PLASMA=1
> $ export ARROW_TRAVIS_ORC=1
> $ export ARROW_TRAVIS_COVERAGE=1
> $ export ARROW_TRAVIS_PARQUET=1
> $ export ARROW_TRAVIS_PYTHON_DOCS=1
> $ export ARROW_BUILD_WARNING_LEVEL=CHECKIN
> $ export ARROW_TRAVIS_PYTHON_JVM=1
> $ export ARROW_TRAVIS_JAVA_BUILD_ONLY=1
> $ export CC="clang-6.0"
> $ export CXX="clang++-6.0"
> $ export TRAVIS_COMPILER=gcc
> $ export CXX=g++
> $ export CC=gcc
> $ export PATH=/usr/lib/ccache:$PATH
> cache.1
> Setting up build cache{code}
> The CC and CXX command line variables are overwritten by travis (because the travis toolchain is set to gcc).



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