.travis.yml

# Copyright Louis Dionne 2017
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)

language: cpp
os: linux # Use Linux unless specified otherwise
dist: xenial # Use 'xenial' unless specified otherwise
sudo: false

# Do not build branches of the form "pr/*". By prefixing pull requests coming
# from branches inside the repository with pr/, this avoids building both the
# branch push _and_ the pull request.
branches:
  except: /pr\/.*/

matrix:
  include:
    - env: COMPILER=clang++-7
      addons: { apt: { packages: ["clang-7"], sources: ["llvm-toolchain-xenial-7", "ubuntu-toolchain-r-test"] } }

    - env: COMPILER=g++-7
      addons: { apt: { packages: ["g++-7"], sources: ["ubuntu-toolchain-r-test"] } }

    - os: osx
      env: COMPILER=clang++
      osx_image: xcode9.1

    - os: osx
      env: COMPILER=clang++
      osx_image: xcode10.2

    - os: osx
      env: COMPILER=clang++
      osx_image: xcode11

    # Build without the optional dependencies
    - env: COMPILER=clang++-7 NO_OPTIONAL_DEPENDENCIES=true
      addons: { apt: { packages: ["clang-7"], sources: ["llvm-toolchain-xenial-7", "ubuntu-toolchain-r-test"] } }

  allow_failures:
    - env: COMPILER=g++-7

install:
  # Set the ${CXX} and ${CC} variables properly. They are picked up by CMake
  # to determine the C++ and C compilers, respectively.
  - export CXX=${COMPILER}
  - if [[ "${CXX}" == "g++"* ]]; then export CC="${CXX/++/cc}"; fi
  - if [[ "${CXX}" == "clang++"* ]]; then export CC="${CXX/++/}"; fi
  - echo "CXX = ${CXX}" && ${CXX} --version
  - echo "CC = ${CC}" && ${CC} --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 a recent CMake
  - CMAKE_VERSION=3.15.0
  - CMAKE_DIR=${DEPS_DIR}/cmake-${CMAKE_VERSION}
  - |
    if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then
      CMAKE_URL="https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}-Linux-x86_64.tar.gz"
      mkdir -p ${CMAKE_DIR}
      (travis_retry wget --no-check-certificate -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C ${CMAKE_DIR}) || exit 1
      export PATH=${CMAKE_DIR}/bin:${PATH}
    else
      brew install cmake || brew upgrade cmake
    fi
  - cmake --version

  # On Linux, install libc++ and libc++abi when building with Clang.
  # Otherwise, it uses the libstdc++ provided with the system.
  - |
    if [[ "${CXX}" == "clang"* && "${TRAVIS_OS_NAME}" == "linux" ]]; then
      if [[ "${CXX}" == "clang++-7" ]]; then LLVM_VERSION="7.0.1"; fi

      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 - ${LIBCXXABI_URL} | tar --strip-components=1 -xJ -C llvm/projects/libcxxabi
      (cd llvm/build && cmake .. -DCMAKE_INSTALL_PREFIX=${DEPS_DIR}/llvm/install)
      (cd llvm/build/projects/libcxx && make install -j2)
      (cd llvm/build/projects/libcxxabi && make install -j2)

      export CXXFLAGS="-isystem ${DEPS_DIR}/llvm/install/include/c++/v1"
      export LDFLAGS="-L ${DEPS_DIR}/llvm/install/lib -l c++ -l c++abi"
      export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:${DEPS_DIR}/llvm/install/lib"
    fi

  # Install Boost headers
  - BOOST_VERSION=1.65.1
  - BOOST_DIR=${DEPS_DIR}/boost-${BOOST_VERSION}
  - |
    if [[ "${NO_OPTIONAL_DEPENDENCIES}" != "true" ]]; then
      BOOST_URL="https://dl.bintray.com/boostorg/release/${BOOST_VERSION}/source/boost_${BOOST_VERSION//\./_}.tar.gz"
      mkdir -p ${BOOST_DIR}
      { travis_retry wget -O - ${BOOST_URL} | tar --strip-components=1 -xz -C ${BOOST_DIR}; } || exit 1
    fi

  # Install other dependencies
  - |
    if [[ "${NO_OPTIONAL_DEPENDENCIES}" == "true" ]]; then
      (cd "${TRAVIS_BUILD_DIR}/dependencies" && ./install.sh --minimal)
    else
      (cd "${TRAVIS_BUILD_DIR}/dependencies" && ./install.sh)
    fi

before_script:
  - cd "${TRAVIS_BUILD_DIR}"
  - (mkdir build && cd build && cmake .. -DBOOST_ROOT="${BOOST_DIR}" -DCMAKE_PREFIX_PATH="${TRAVIS_BUILD_DIR}/dependencies/install" -DCMAKE_INSTALL_PREFIX="${TRAVIS_BUILD_DIR}/build/install")

script:
  - cmake --build build --target check
  - |
    if [[ "${NO_OPTIONAL_DEPENDENCIES}" != "true" ]]; then
      cmake --build build --target benchmarks
    fi