.travis.yml

language: generic 
sudo: true
dist: trusty

branches:
  only:
  - master

before_script:
  - cat /proc/cpuinfo
  - set -x
  - source .travis-cmake-install.sh
  - set +x
  - mkdir build
  - cd build
  - cmake -DCMAKE_C_COMPILER=${C_COMPILER} -DCMAKE_CXX_COMPILER=${COMPILER} -DCMAKE_VERBOSE_MAKEFILE=ON -DTRAVIS_BUILD:BOOL=ON ..

script:
    - make -j4
    - ctest -L c --verbose
      #- ctest -L cxx --verbose
    - ctest -L c.vs.cxx --verbose

compiler:
  - gcc

cache:
  apt: true

matrix:
        include:
                - compiler: gcc
                  addons:
                        apt:
                              sources:
                                - ubuntu-toolchain-r-test
                              packages:
                                - g++-6
                  env:
                        - COMPILER=g++-6 C_COMPILER=gcc-6 BUILD_TYPE=Release

#  matrix:
#    include:
#      - env: CXX=g++-5 CC=gcc-5
#        addons:
#          apt:
#            packages:
#              - g++-5
#            sources: &sources
#              - ubuntu-toolchain-r-test
#              - llvm-toolchain-precise
#      - env: CXX=g++-4.9 CC=gcc-4.9
#        addons:
#          apt:
#            packages:
#              - g++-4.9
#            sources: *sources
#      - env: CXX=clang++-3.8 CC=clang-3.8
#        addons:
#          apt:
#            packages:
#              - clang-3.8
#            sources: *sources
#  sources: *sources


# http://stackoverflow.com/a/35113462 
# *sources is a "backreference" to the previous &sources at line 44 --
# the whole tree from under the property marked by &sources is
# copied under the property marked by *sources