os: linux
dist: trusty
sudo: false
group: travis_latest
language: c++
cache: ccache

addons:
  apt:
    sources: &apt_sources
      - ubuntu-toolchain-r-test
      - llvm-toolchain-precise-3.5
      - llvm-toolchain-precise-3.6
      - llvm-toolchain-precise-3.7
      - llvm-toolchain-precise-3.8
      - llvm-toolchain-trusty-3.9
      - llvm-toolchain-trusty-4.0
      - llvm-toolchain-trusty-5.0
      - llvm-toolchain-trusty-6.0

matrix:
  include:
    - os: linux
      env: COMPILER=g++-4.8
      compiler: gcc
      addons: &gcc4_8
        apt:
          packages: ["g++-4.8", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=g++-4.9
      compiler: gcc
      addons: &gcc4_9
        apt:
          packages: ["g++-4.9", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=g++-5
      compiler: gcc
      addons: &gcc5
        apt:
          packages: ["g++-5", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=g++-6
      compiler: gcc
      addons: &gcc6
        apt:
          packages: ["g++-6", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=g++-7
      compiler: gcc
      addons: &gcc7
        apt:
          packages: ["g++-7", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=g++-8
      compiler: gcc
      addons: &gcc8
        apt:
          packages: ["g++-8", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=clang++-3.5
      compiler: clang
      addons: &clang3_5
        apt:
          packages: ["clang-3.5", "g++-7", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=clang++-3.6
      compiler: clang
      addons: &clang3_6
        apt:
          packages: ["clang-3.6", "g++-7", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=clang++-3.7
      compiler: clang
      addons: &clang3-7
        apt:
          packages: ["clang-3.7", "g++-7", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=clang++-3.8
      compiler: clang
      addons: &clang3_8
        apt:
          packages: ["clang-3.8", "g++-7", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=clang++-3.9
      compiler: clang
      addons: &clang3_9
        apt:
          packages: ["clang-3.9", "g++-7", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=clang++-4.0
      compiler: clang
      addons: &clang4_0
        apt:
          packages: ["clang-4.0", "g++-7", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=clang++-5.0
      compiler: clang
      addons: &clang5_0
        apt:
          packages: ["clang-5.0", "g++-7", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: linux
      env: COMPILER=clang++-6.0
      compiler: clang
      addons: &clang6_0
        apt:
          packages: ["clang-6.0", "g++-7", "python3-pip", "lcov"]
          sources: *apt_sources

    - os: osx
      osx_image: xcode7.3
      compiler: clang
      env: COMPILER='clang++'

    - os: osx
      osx_image: xcode8
      compiler: clang
      env: COMPILER='clang++'

    - os: osx
      osx_image: xcode9
      compiler: clang
      env: COMPILER='clang++'

    - os: osx
      osx_image: xcode10
      compiler: clang
      env: COMPILER='clang++'

script:
  - export CXX=${COMPILER}
  - JOBS=2 # Travis machines have 2 cores.
  - mkdir build && cd build
  - cmake -G "Unix Makefiles" -DOPTIONAL_LITE_OPT_SELECT_NONSTD=ON -DOPTIONAL_LITE_OPT_BUILD_TESTS=ON -DOPTIONAL_LITE_OPT_BUILD_EXAMPLES=OFF ..
  - cmake --build . -- -j${JOBS}
  - ctest --output-on-failure -j${JOBS}