.travis.yml

# Reference
# - https://github.com/Microsoft/GSL/blob/master/.travis.yml

language: cpp

matrix:
  include:
    - os: osx
      env: COMPILER=g++-7
    - os: osx
      env: COMPILER=clang++  # osx simply names "clang" the latest clang installed with Xcode toolchain
      compiler: clang++
    - os: linux
      env: COMPILER=g++-7
      addons:
        apt:
          packages:
            - xorg-dev
            - g++-7
            - lcov
          sources:
            - ubuntu-toolchain-r-test
    - os: linux
      env: COMPILER=clang++-5.0
      addons:
        apt:
          packages:
            - xorg-dev
            - clang-5.0
            - lcov
          sources:
            - llvm-toolchain-trusty-5.0
      compiler: clang++

env:
  global:
    - PREMAKE_VERSION="5.0.0-alpha12"
    - CMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} -std=c++17"
  linux:
    - JOBS="$(nproc)"  # should be ~2
  osx:
    - JOBS="$(sysctl -n hw.ncpu)"  # should be 2

cache:
  apt: true  # private repositories only
  directories:
    - premake-${PREMAKE_VERSION}

before_install:
  # install g++-7 and lcov for OSX
  # remove c++ include folder symlink from brew-cask oclint, we don't need it and Cask devs say they don't want
  # to auto-link themselves anymore
  - |
    if [ "$TRAVIS_OS_NAME" == "osx" ]; then
      rm /usr/local/include/c++
      brew install gcc@7
      brew install lcov
    fi

install:
  # Set the ${CXX} variable properly (don't do it in env, it is too early and would be overriden
  # by travis compiler settings just afterward)
  # and do it after the initial package install to have g++-7 available if used
  - export CXX=${COMPILER}
  - ${CXX} --version

  # Dependencies required by the CI are installed in ${TRAVIS_BUILD_DIR}/deps/
  - DEPS_DIR="${TRAVIS_BUILD_DIR}/deps"
  - mkdir -p "${DEPS_DIR}"
  - cd "${DEPS_DIR}"

  # Install premake if not already downloaded, built and up-to-date
  - |
    if [[ -z "$(ls -A premake-${PREMAKE_VERSION})" || ! -x "$HOME/bin/premake5" || "$(premake5 --version)" == *"${PREMAKE_VERSION}" ]]; then
      wget "https://github.com/premake/premake-core/releases/download/v${PREMAKE_VERSION}/premake-${PREMAKE_VERSION}-src.zip"
      rm -rf "premake-${PREMAKE_VERSION}"
      unzip "premake-${PREMAKE_VERSION}-src.zip"
      if [ "$TRAVIS_OS_NAME" == "linux" ]; then
        PREMAKE_BUILD_DIR="gmake.unix"
      elif [ "$TRAVIS_OS_NAME" == "osx" ]; then
        PREMAKE_BUILD_DIR="gmake.macosx"
      fi
    fi
  - pushd "premake-${PREMAKE_VERSION}/build/${PREMAKE_BUILD_DIR}"
  - make ${MAKEFLAGS}
  - popd
  - mkdir "$HOME/bin" -p
  - cp "premake-${PREMAKE_VERSION}/bin/release/premake5" "$HOME/bin/premake5"

  ############################################################################
  # [linux]: Install the right version of libc++ (required for e.g. C++14)
  ############################################################################
  - |
    LLVM_INSTALL=${DEPS_DIR}/llvm/install
    # if in linux and compiler clang and llvm not installed
    if [[ "${TRAVIS_OS_NAME}" == "linux" && "${CXX%%+*}" == "clang" && ( ! -d "${LLVM_INSTALL}" || -z "$(ls -A ${LLVM_INSTALL})" ) ]]; then
      LLVM_VERSION="5.0.1"
      LLVM_URL="http://llvm.org/releases/${LLVM_VERSION}/llvm-${LLVM_VERSION}.src.tar.xz"
      LIBCXX_URL="http://llvm.org/releases/${LLVM_VERSION}/libcxx-${LLVM_VERSION}.src.tar.xz"
      LIBCXXABI_URL="http://llvm.org/releases/${LLVM_VERSION}/libcxxabi-${LLVM_VERSION}.src.tar.xz"
      mkdir -p llvm llvm/build llvm/projects/libcxx llvm/projects/libcxxabi
      travis_retry wget -O - ${LLVM_URL} | tar --strip-components=1 -xJ -C llvm
      travis_retry wget -O - ${LIBCXX_URL} | tar --strip-components=1 -xJ -C llvm/projects/libcxx
      travis_retry wget -O - ${LIBCXXABI_URL} | tar --strip-components=1 -xJ -C llvm/projects/libcxxabi
      (cd llvm/build && cmake .. -DCMAKE_INSTALL_PREFIX=${LLVM_INSTALL})
      (cd llvm/build/projects/libcxx && make install -j2)
      (cd llvm/build/projects/libcxxabi && make install -j2)
      export CXXFLAGS="-isystem ${LLVM_INSTALL}/include/c++/v1"
      export LDFLAGS="-L ${LLVM_INSTALL}/lib -l c++ -l c++abi"
      export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:${LLVM_INSTALL}/lib"
    fi

before_script:
  - cd "${TRAVIS_BUILD_DIR}"

  # Build Box2D
  - pushd "third-party/Box2D/Box2D"
  - premake5 gmake
  - pushd "Build/gmake"
  - export config=release
  - make Box2D ${MAKEFLAGS}  # we don't need to build the examples
  - popd
  - popd

script:
  - mkdir -p build/Release
  - pushd build/Release
  # Fail on first error
  - set -e
  # Optimization: consider cmake -GNinja and ninja
  - cmake ../.. -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTS=ON -DENABLE_COVERAGE=ON
  - make -j${JOBS}
  - set +e
  - popd
  # Creating test report
  # ctest --output-on-failure groups all tests from the same target in one, and does not output colors
  - build/Release/bin/test_engine

after_success:
  # Uploading report to CodeCov
  - bash <(curl -s https://codecov.io/bash)