language: cpp
matrix:
  include:
    # works on Precise and Trusty
    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-5
      env:
         - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"

    # works on Precise and Trusty
    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-6
      env:
        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"

    # works on Precise and Trusty
    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-7
      env:
        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"

    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - clang-3.4
      env:
        - MATRIX_EVAL="CC=clang-3.4 && CXX=clang++-3.4"

    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - clang-5
      env:
        - MATRIX_EVAL="CC=clang-5 && CXX=clang++-5"

before_install:
    - eval "${MATRIX_EVAL}"

install:
    - sudo apt-get install libboost-all-dev

script:
    - make
    - ./test14 | diff - test_ref.txt
    - ./test17 | diff - test_ref.txt