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

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/19965
• Assignee: Philipp Moritz
• Reporter: Philipp Moritz
• Created: 31/Oct/18 03:48
• Updated: 11/Jan/23 07:28
• Resolved: 01/Nov/18 03:36

Description

See for example https://travis-ci.org/apache/arrow/jobs/448267169:

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

The CC and CXX command line variables are overwritten by travis (because the travis toolchain is set to gcc).

Issue Links

• links to: GitHub Pull Request #2878