.travis.yml

language: cpp
os: 
    - linux
    - osx
dist: trusty
compiler:
    - gcc
    - clang
env:
    - TEST_SUITE=unit
    - TEST_SUITE=sandbox
    - TEST_SUITE=paper
    - TEST_SUITE=elliptic_drop
    - TEST_SUITE=nair_jablonowski_2008
    - TEST_SUITE=pbl
    - TEST_SUITE=osx_local_clang
    - TEST_SUITE=UWLCM_MT
    - TEST_SUITE=UWLCM_unit_iles
    - TEST_SUITE=UWLCM_unit_smg

matrix:
    exclude:
        - os: osx
          compiler: gcc
        
        - os: osx
          env: TEST_SUITE=pbl # pbl not tested on osx

        - compiler: clang
          env: TEST_SUITE=UWLCM_MT
        - compiler: clang
          env: TEST_SUITE=UWLCM_unit_iles
        - compiler: clang
          env: TEST_SUITE=UWLCM_unit_smg
       
        # local clang tests on osx
        - os: linux
          env: TEST_SUITE=osx_local_clang
        - compiler: gcc
          env: TEST_SUITE=osx_local_clang
addons:
  apt:
    packages:
      - g++-6
      - clang-4.0
      - boost1.61
    sources: &sources
      - sourceline: 'ppa:rakhimov/boost'
      - ubuntu-toolchain-r-test
      - llvm-toolchain-trusty-4.0

before_install:
    # define a compiler variable for use in if statements
    - if [[ $TRAVIS_OS_NAME == 'linux' && $CXX == 'clang++' ]]; then export COMPILER=clang++; fi
    - if [[ $TRAVIS_OS_NAME == 'linux' && $CXX == 'g++'     ]]; then export COMPILER=g++; fi
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then export COMPILER=clang++; fi # only clang on osx

# to avoid python lib/interpreter mismatch; https://github.com/travis-ci/travis-ci/issues/5326
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then export PATH=$(echo $PATH | tr ':' "\n" | sed '/\/opt\/python/d' | tr "\n" ":" | sed "s|::|:|g"); fi
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu/ trusty main universe multiverse"; fi
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo apt-get update; fi
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then export apt_get_install="apt-get install --no-install-recommends -t trusty -y"; fi
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then brew update; fi
    
    # Workaround for upgrading gcc, see https://github.com/travis-ci/travis-ci/issues/8826
    # Seems like this is now done by Travis, but leaving it (commented out) for now
    #- if [[ $TRAVIS_OS_NAME == 'osx' ]]; then brew cask uninstall oclint; fi
    
    # needed to get rvm, see below
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then \curl -sSL https://get.rvm.io | bash -s -- --branch stable; fi
    # https://github.com/travis-ci/travis-ci/issues/10165
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then rvm reload; fi
   
    # locally installed stuff comes first
    - export PATH=/usr/local/bin:$PATH

    # fixing broken OSX gzip tools
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then brew install gzip; fi
     
    # to avoid problems with plotting by paraview on Travis
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then unset DISPLAY; fi 

    # you may not believe it, but GCC (4.8.2) is giving ICEs otherwise!
    - export make_j="make -j 2"
    - if [[ $COMPILER == 'g++' ]]; then export make_j="make"; fi

    # testing both Python 2 and 3 on Linux (unrelated to compiler choice!)
    - export PY3DEB=""
    - if [[ $TRAVIS_OS_NAME == 'linux' && $COMPILER == 'g++' ]]; then PY3DEB=3; fi
    - if [[ $PY3DEB != '' ]]; then sudo apt-get install python3-dev; fi
   
    # upgrade pip
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then sudo pip install --upgrade pip; fi 
 
install:
    # silence the gazillion warnings coming from blitz headers when using the osx clang
    - if [[ $TRAVIS_OS_NAME == 'osx' && $COMPILER == 'clang++' ]]; then export CXXFLAGS="-Wno-parentheses ${CXXFLAGS}"; fi

    # redefine CXX to the actual version used
    - if [[ $TRAVIS_OS_NAME == 'linux' && $COMPILER == 'clang++' ]]; then export CXX=clang++-4.0; fi
    - if [[ $TRAVIS_OS_NAME == 'linux' && $COMPILER == 'g++'     ]]; then export CXX=g++-6; fi
    # downloads and setups local clang on osx
    - if [[ $TEST_SUITE == 'osx_local_clang' ]]; then . ./.travis_scripts/setup_local_clang.sh; fi

    # latest boost is installed using addons functionality
    
    # cmake 
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then wget https://github.com/Kitware/CMake/releases/download/v3.13.2/cmake-3.13.2-Linux-x86_64.sh; fi
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo sh cmake-3.13.2-Linux-x86_64.sh --prefix=/usr/local --exclude-subdir; fi

    # blitz
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then brew install blitz; fi
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo $apt_get_install libblitz0-dev; fi

    # hdf5
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo $apt_get_install  -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" libpango-1.0-0 libpangocairo-1.0-0 libhdf5-dev; fi
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo $apt_get_install hdf5-tools; fi
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then brew install hdf5; fi

    # gnuplot-iostream
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo $apt_get_install gnuplot-nox; fi
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then brew install gnuplot; fi
    - sudo wget -O /usr/local/include/gnuplot-iostream.h https://raw.githubusercontent.com/dstahlke/gnuplot-iostream/master/gnuplot-iostream.h

    # h5py
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo $apt_get_install python$PY3DEB-h5py; fi
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then sudo pip install h5py; fi 

    # scipy 
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo $apt_get_install python$PY3DEB-scipy; fi
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then sudo pip install scipy; fi 

    # matplotlib
    - if [[ $TRAVIS_OS_NAME == 'linux' ]]; then sudo $apt_get_install python$PY3DEB-matplotlib; fi
    - if [[ $TRAVIS_OS_NAME == 'osx' ]]; then sudo pip install matplotlib; fi

    # make Python 3 the default if requested
    - if [[ $PY3DEB != '' ]]; then sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 10; fi

script:
    # libmpdata++
    - cd libmpdata++
    - mkdir build
    - cd build
    - cmake ..
    - cd ../..

    # compiling and running all unit tests in Debug & Release modes
    - if [[ $TEST_SUITE == 'unit' ]]; then . ./.travis_scripts/unit.sh; fi

    # compiling and running selected paper tests in Debug mode
    - if [[ $TEST_SUITE == 'paper' ]]; then . ./.travis_scripts/paper.sh; fi

    # compiling all sandbox tests in Release mode
    - if [[ $TEST_SUITE == 'sandbox' ]]; then . ./.travis_scripts/sandbox.sh; fi

    - if [[ $TEST_SUITE == 'elliptic_drop' ]]; then . ./.travis_scripts/elliptic_drop.sh; fi

    # UWLCM
    - if [[ $TEST_SUITE == 'UWLCM_MT' ]]; then . ./.travis_scripts/UWLCM.sh moist_thermal; fi
    - if [[ $TEST_SUITE == 'UWLCM_unit_iles' ]]; then . ./.travis_scripts/UWLCM.sh unit_iles; fi
    - if [[ $TEST_SUITE == 'UWLCM_unit_smg' ]]; then . ./.travis_scripts/UWLCM.sh unit_smg; fi
    
    # compiling and running tests from Nair & Jablonowski 2008 MWR paper in Release mode
    - if [[ $TEST_SUITE == 'nair_jablonowski_2008' ]]; then . ./.travis_scripts/nair_jablonowski_2008.sh; fi
    
    # running pbl tests in Release mode
    - if [[ $TEST_SUITE == 'pbl' ]]; then . ./.travis_scripts/pbl.sh; fi
  
    # testing local clang on osx
    - if [[ $TEST_SUITE == 'osx_local_clang' ]]; then . ./.travis_scripts/unit.sh; fi # with '.' to pass env vars