.travis.yml

language: c

sudo: required

before_script:
  # Add an IPv6 config
  # https://github.com/travis-ci/travis-ci/issues/8361
  - if [ "${TRAVIS_OS_NAME}" == linux ]; then
      sudo sh -c 'echo 0 > /proc/sys/net/ipv6/conf/all/disable_ipv6';
    fi

after_script:
  # Make sure of which CC version was used
  - env
  - $CC --version
  - grep CC Makefile

matrix:
  include:
    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-4.9
            - python3
            - python3-dns
      env:
         - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9"

    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-5
            - python3
            - python3-dns
      env:
         - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"

    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-6
            - python3
            - python3-dns
      env:
        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"

    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-7
            - python3
            - python3-dns
      env:
        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"

    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-8
            - python3
            - python3-dns
      env:
        - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"

before_install:
    - eval "${MATRIX_EVAL}"