language: cpp
sudo: require

common_sources: &all_sources
  - ubuntu-toolchain-r-test
  - llvm-toolchain-trusty
  - llvm-toolchain-trusty-6.0

matrix:
  include:
    - os: linux
      compiler: gcc
      addons: &gcc8
        apt:
          sources: *all_sources
          packages: 
            - g++-8
      env:
        - MATRIX_EVAL="export CC=gcc-8; export CXX=g++-8;"

    - os: linux
      compiler: clang
      addons:
          apt:
              sources: *all_sources
              packages:
                - g++-8
                - clang-6.0
      env:
        - MATRIX_EVAL="export CC=clang-6.0; export CXX=clang++-6.0;"

script:
  - cmake -Htest -Bbuild  
  - cmake --build build
  - CTEST_OUTPUT_ON_FAILURE=1 cmake --build build --target test