language: cpp
cache: ccache
dist: xenial
matrix:
  include:
    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-5
            - liblua5.3-dev
      env:
         - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-6
            - liblua5.3-dev
      env:
        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"
    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-7
            - liblua5.3-dev
      env:
        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"
    - os: linux
      addons:
        apt:
          sources:
            - ubuntu-toolchain-r-test
          packages:
            - g++-8
            - liblua5.3-dev
      env:
        - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"
    - os: linux
      addons:
        apt:
          sources:
            - llvm-toolchain-xenial-6.0
          packages:
            - clang-6.0
            - liblua5.3-dev
      env:
        - MATRIX_EVAL="CC=clang-6.0 && CXX=clang++-6.0"
    - os: linux
      addons:
        apt:
          sources:
            - llvm-toolchain-xenial-7
          packages:
            - clang-7
            - liblua5.3-dev
      env:
        - MATRIX_EVAL="CC=clang-7 && CXX=clang++-7"
    - os: osx
      osx_image: xcode9.4
    - os: osx
      osx_image: xcode10
    - os: osx
      osx_image: xcode10.1

before_install:
    - |
     if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
       HOMEBREW_NO_AUTO_UPDATE=1 brew install lua ccache;
       export PATH="/usr/local/opt/ccache/libexec:$PATH";
     fi
    - eval "${MATRIX_EVAL}"
    # Combine global build options with OS/compiler-dependent options
    - export CMAKE_OPTIONS="${CMAKE_OPTIONS} ${ENV_CMAKE_OPTIONS} -DCMAKE_CXX_COMPILER_LAUNCHER=ccache"
    - export CXX_FLAGS="${CXX_FLAGS} ${ENV_CXX_FLAGS} -Wall -Werror -Wextra -Wunused -pedantic"
    - export C_FLAGS="${C_FLAGS} ${ENV_C_FLAGS} -Wall -Werror -Wextra -Wunused -pedantic -std=c99"

install:
    - echo ${PATH}
    - echo ${CXX}
    - ${CXX} --version
    - ${CXX} -v

script:
     - mkdir -p build
     - cd build
     - cmake ${CMAKE_OPTIONS} -DCMAKE_C_FLAGS=${C_FLAGS} -DCMAKE_CXX_FLAGS=${CXX_FLAGS} ..
     - make -j4

# Only watch the master branch
branches:
  only:
    - master