.travis.yml

sudo: false

language: cpp

matrix:
  include:
    - compiler: gcc
      os: linux
      dist: xenial
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-8
      env: COMPILER=g++-8
    - compiler: gcc
      os: linux
      dist: xenial
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-7
      env: COMPILER=g++-7
    - compiler: gcc
      os: linux
      dist: xenial
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-6
      env: COMPILER=g++-6

    - compiler: clang
      os: linux
      dist: xenial
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
            - sourceline: 'deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial main'
              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
          packages:
            - clang-8
      env: COMPILER=clang++-8
    - compiler: clang
      os: linux
      dist: xenial
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
            - sourceline: 'deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-7 main'
              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
          packages:
            - clang-7
      env: COMPILER=clang++-7
    - compiler: clang
      os: linux
      dist: xenial
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
            - sourceline: 'deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-6.0 main'
              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
          packages:
            - clang-6.0
      env: COMPILER=clang++-6.0

    - compiler: clang
      os: osx
      osx_image: xcode10.1
    - compiler: clang
      os: osx
      osx_image: xcode9.4
    - compiler: clang
      os: osx
      osx_image: xcode8.3

before_script:
  - export CXX=${COMPILER-$CXX}

script:
  - make