.travis.yml

dist: trusty
sudo: true
language: cpp
compiler:
  - gcc
env:
  global:
    - DEPS_DIR=${TRAVIS_BUILD_DIR}/deps
addons:
  apt:
    sources:
      - ubuntu-toolchain-r-test
    packages:
      - gcc-6
      - g++-6
      - cmake
install:
  # Download and install recent cmake
  - |
    if [[ ${TRAVIS_OS_NAME} == "linux" ]]; then
      CMAKE_URL="https://cmake.org/files/v3.16/cmake-3.16.0-Linux-x86_64.tar.gz"
      mkdir -p ${DEPS_DIR}/cmake
      travis_retry wget --no-check-certificate --quiet -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C ${DEPS_DIR}/cmake
      export PATH=${DEPS_DIR}/cmake/bin:${PATH}
    fi
script:
  # Link gcc-6 and g++-6 to their standard commands
  - sudo ln -s /usr/bin/gcc-6 /usr/local/bin/gcc
  - sudo ln -s /usr/bin/g++-6 /usr/local/bin/g++
  # Export CC and CXX to tell cmake which compiler to use
  - export CC=/usr/bin/gcc-6
  - export CXX=/usr/bin/g++-6
  # Check versions of gcc, g++ and cmake
  - gcc -v && g++ -v && cmake --version
  # Run your build commands next
  - mkdir -p build
  - cd build
  - cmake ..
  - make
  - ctest