# Optimize git clone
git:
    depth: 5

# No need for sudo
sudo: false

# Bionic is the most recent version of Ubuntu I can get to work properly
dist: bionic

# Enable C++ language support
language: cpp

# Cache compiled object files with ccache
cache: ccache

osx_image: xcode11.2

compiler:
    - gcc
    - clang

os:
    - linux
    - osx

addons:
  apt:
    sources:
    - sourceline: 'deb http://apt.llvm.org/bionic/ llvm-toolchain-bionic-9 main'
      key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
    - sourceline: 'ppa:ubuntu-toolchain-r/test'
    packages:
    - clang-9
    - cmake
    - gcc-9
    - g++-9
  homebrew:
    packages:
    - cmake
    - gcc@9
    - llvm@9
    update: true

env:
    - BUILD_TYPE=Debug
    - BUILD_TYPE=RelWithDebInfo

before_install:
    # Display available disk space
    - df -h

    # Display Travis OS name
    - echo $TRAVIS_OS_NAME

    # Display build type
    - echo $BUILD_TYPE

    # The following Homebrew packages aren't linked by default, and need to be prepended to the path explicitly.
    - if [ "$TRAVIS_OS_NAME" = "osx" ]; then
        export PATH="$(brew --prefix llvm)/bin:$PATH";
      fi

    # /usr/bin/gcc points to an older compiler on both Linux and macOS.
    - if [ "$CXX" = "g++" ]; then export CXX="g++-9" CC="gcc-9"; fi

    # /usr/bin/clang points to an older compiler on both Linux and macOS.
    #
    # Homebrew's llvm package doesn't ship a versioned clang++ binary, so the values
    # below don't work on macOS. Fortunately, the path change above makes the
    # default values (clang and clang++) resolve to the correct compiler on macOS.
    - if [ "$TRAVIS_OS_NAME" = "linux" ]; then
        if [ "$CXX" = "clang++" ]; then export CXX="clang++-9" CC="clang-9"; fi;
      fi

    # Display compilers/cmake name/version
    - echo ${CC}
    - echo ${CXX}
    - ${CC} --version
    - ${CXX} --version
    - cmake --version

install:
    # Get number of cores (or 2 by default if somehow none of these are available somehow)
    - JOBS=$(nproc 2>/dev/null || sysctl -n hw.ncpu 2>/dev/null || getconf _NPROCESSORS_ONLN 2>/dev/null || echo 2)
    - echo $JOBS

    # Recommanded build directory
    - CMAKE_BUILD_DIR=build

    # Install ccache on OSX
    - |
      if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then
          # This is OSX
          brew install ccache
          export PATH="/usr/local/opt/ccache/libexec:$PATH"
      fi

    # Install required libraries
    - mkdir travisLibs && cd travisLibs

    # Install modern SDL2
    - SDL2_VERSION=2.0.10
    - |
      travis_retry curl -L https://www.libsdl.org/release/SDL2-${SDL2_VERSION}.tar.gz | tar xz
      cd SDL2-${SDL2_VERSION}
      ./configure
      make -j ${JOBS}
      sudo make install -j ${JOBS}
      cd ..

    # Finished installing required libraries
    - cd ..

before_script:
    # Make build directory and generate CMake build files
    - mkdir -p ${CMAKE_BUILD_DIR} && cd ${CMAKE_BUILD_DIR}
    - cmake .. -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DFIX_BUGS=ON -DWARNINGS=ON -DALL_WARNINGS=ON

script:
    # CMake build
    - cmake --build . --config ${BUILD_TYPE} --parallel ${JOBS}

    # Make build
    - cd ..
    - make -j ${JOBS} FIX_BUGS=1 RELEASE=1 WARNINGS=1 ALL_WARNINGS=1
    - cd ${CMAKE_BUILD_DIR}