.travis.yml

language: c

install:
    - sudo apt-get remove -y cmake
    - DEPS_DIR="${TRAVIS_BUILD_DIR}/deps"
    - mkdir -p ${DEPS_DIR} && cd ${DEPS_DIR}

    - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
        CMAKE_URL="https://cmake.org/files/v3.17/cmake-3.17.3-Linux-x86_64.tar.gz";
        mkdir cmake && travis_retry wget --no-check-certificate --quiet -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C cmake;
        export PATH=${DEPS_DIR}/cmake/bin:${PATH};
      else
        brew outdated cmake || brew upgrade cmake;
      fi
    - cmake --version
    - cd ..

matrix:
  include:
    - os: linux
      addons:
        apt:
          sources: 
            - ubuntu-toolchain-r-test
          packages:
            - gcc-5
            - gfortran-5
    - os: linux
      addons:
        apt:
          sources: 
            - ubuntu-toolchain-r-test
          packages:
            - gcc-5
            - gfortran-5
            - libfftw3-dev

            
before_script:
    - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 100
    - sudo update-alternatives --install /usr/bin/gfortran gfortran /usr/bin/gfortran-5 100
    - mkdir build
    - cd build
 
script:
    - if dpkg -s libfftw3-dev; then cmake .. -DENABLE_FFTW=ON -DDEBUG=ON; else cmake .. -DDEBUG=ON; fi
    - make 
    - make test CTEST_OUTPUT_ON_FAILURE=1