language: cpp
sudo: false

matrix:
  exclude: # On OSX g++ is a symlink to clang++ by default
    - os: osx
      compiler: gcc

  include:
    # Bionic Ubuntu 18.04
    - os: linux
      name: "Bionic - gcc 7.4.0"
      dist: bionic # We can't install packages on Bionic, not sure why. Travis ignores addons...
      compiler: gcc
    # Bionic Ubuntu 18.04
    - os: linux
      name: "Bionic - clang 7"
      dist: bionic # We can't install packages on Bionic, not sure why. Travis ignores addons...
      compiler: clang

    # clang-6
    - os: linux
      name: "Xenial - clang 6"
      dist: xenial
      env: [USE_CC='/usr/bin/clang-6.0', USE_CXX='/usr/bin/clang++-6.0']
      addons:
        apt:
          packages: ['clang-6.0', 'cmake', 'libstdc++-9-dev', 'libstdc++6']
          sources: ['ubuntu-toolchain-r-test', 'ubuntu-toolchain-r-test']
    # clang-8
    - os: linux
      name: "Xenial - clang 8"
      dist: xenial
      env: [USE_CC='/usr/bin/clang-8', USE_CXX='/usr/bin/clang++-8']
      addons:
        apt:
          packages: ['clang-8', 'cmake', 'libstdc++-9-dev', 'libstdc++6']
          sources: ['llvm-toolchain-xenial-8', 'ubuntu-toolchain-r-test']
    # clang-9
    - os: linux
      name: "Xenial - clang 9"
      dist: xenial
      env: [USE_CC='/usr/bin/clang-9', USE_CXX='/usr/bin/clang++-9']
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
            - sourceline: 'deb https://apt.llvm.org/xenial/ llvm-toolchain-xenial-9 main'
              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
          packages: ['clang-9', 'cmake', 'libstdc++-9-dev', 'libstdc++6']

    # gcc-8
    - os: linux
      name: "Xenial - gcc 8"
      dist: xenial
      env: [USE_CC='/usr/bin/gcc-8', USE_CXX='/usr/bin/g++-8']
      addons:
        apt:
          packages: ['gcc-8', 'g++-8', 'cmake']
          sources: ['ubuntu-toolchain-r-test']
    # gcc-9
    - os: linux
      name: "Xenial - gcc 9"
      dist: xenial
      env: [USE_CC='/usr/bin/gcc-9', USE_CXX='/usr/bin/g++-9']
      addons:
        apt:
          packages: ['gcc-9', 'g++-9', 'cmake']
          sources: ['ubuntu-toolchain-r-test']

    - os: osx
      osx_image: xcode10.3
      compiler: clang
    - os: osx
      osx_image: xcode11.3
      compiler: clang


before_install:
  # Override compilers set by Travis
  - if [ ! -z "${USE_CC}" ]; then echo "Override CC=${USE_CC}"; eval "CC=${USE_CC}"; fi
  - if [ ! -z "${USE_CXX}" ]; then echo "Override CXX=${USE_CXX}"; eval "CXX=${USE_CXX}"; fi
  - echo ${CC} && ${CC} --version
  - echo ${CXX} && ${CXX} --version
  # Install catch 2 dependency
  - wget https://github.com/catchorg/Catch2/archive/v2.11.1.zip
  - unzip v2.11.1.zip && cd Catch2-2.11.1 && mkdir -p build/ && cd build/
  - cmake -DCMAKE_BUILD_TYPE=Release .. -DCMAKE_CXX_STANDARD=14 -DCMAKE_INSTALL_PREFIX=~/.local/ && cmake --build . --target install
  - cd ../..

script:
  #Build & Install library
  - (mkdir -p lib/build-debug/ &&  cd lib/build-debug && cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=~/.local/ .. && cmake --build . --target install)
  - (mkdir -p lib/build-release/ &&  cd lib/build-release && cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/.local/ .. && cmake --build . --target install)
  # Run tests
  - (mkdir -p test/build-debug/ &&  cd test/build-debug && cmake ${EXTRA_CMAKE_FLAGS} -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=~/.local/ .. && cmake --build . && ctest -V .)
  - (mkdir -p test/build-release/ &&  cd test/build-release && cmake ${EXTRA_CMAKE_FLAGS} -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=~/.local/ .. && cmake --build . && ctest -V .)