language: c++
sudo: false
branches:
  except:
    - /^(wip\/)?(appveyor|msvc|mingw|windows)(\-.+)?$/
matrix:
  include:
    ###
    ## Release build using the latest GCC
    ###
    - env: CMAKE_BUILD_TYPE=Release C_COMPILER=gcc-8 CXX_COMPILER=g++-8
      addons:
        apt:
          sources:
          - ubuntu-toolchain-r-test
          - george-edison55-precise-backports
          packages:
          - gcc-8
          - g++-8
          - cmake
          - cmake-data

    ###
    ## Linux builds using various versions of GCC.
    ###
    - env: C_COMPILER=gcc-8 CXX_COMPILER=g++-8
      addons:
        apt:
          sources:
          - ubuntu-toolchain-r-test
          - george-edison55-precise-backports
          packages:
          - gcc-8
          - g++-8
          - cmake
          - cmake-data
    # - env: C_COMPILER=gcc-7 CXX_COMPILER=g++-7
    #   addons:
    #     apt:
    #       sources:
    #       - ubuntu-toolchain-r-test
    #       - george-edison55-precise-backports
    #       packages:
    #       - gcc-7
    #       - g++-7
    #       - cmake
    #       - cmake-data
    - env: C_COMPILER=gcc-6 CXX_COMPILER=g++-6
      addons:
        apt:
          sources:
          - ubuntu-toolchain-r-test
          - george-edison55-precise-backports
          packages:
          - gcc-6
          - g++-6
          - cmake
          - cmake-data
    - env: C_COMPILER=gcc-5 CXX_COMPILER=g++-5
      addons:
        apt:
          sources:
          - ubuntu-toolchain-r-test
          - george-edison55-precise-backports
          packages:
          - gcc-5
          - g++-5
          - cmake
          - cmake-data
    # - env: C_COMPILER=gcc-4.9 CXX_COMPILER=g++-4.9
    #   addons:
    #     apt:
    #       sources:
    #       - ubuntu-toolchain-r-test
    #       - george-edison55-precise-backports
    #       packages:
    #       - gcc-4.9
    #       - g++-4.9
    #       - cmake
    #       - cmake-data
    - env: C_COMPILER=gcc-4.8 CXX_COMPILER=g++-4.8
      addons:
        apt:
          sources:
          - ubuntu-toolchain-r-test
          - george-edison55-precise-backports
          packages:
          - gcc-4.8
          - g++-4.8
          - cmake
          - cmake-data
    # - env: C_COMPILER=gcc-4.7 CXX_COMPILER=g++-4.7
    #   addons:
    #     apt:
    #       sources:
    #       - ubuntu-toolchain-r-test
    #       - george-edison55-precise-backports
    #       packages:
    #       - gcc-4.7
    #       - g++-4.7
    #       - cmake
    #       - cmake-data
    # - env: C_COMPILER=gcc-4.6 CXX_COMPILER=g++-4.6
    #   addons:
    #     apt:
    #       sources:
    #       - ubuntu-toolchain-r-test
    #       - george-edison55-precise-backports
    #       packages:
    #       - gcc-4.6
    #       - g++-4.6
    #       - cmake
    #       - cmake-data
    # - os: linux
    #   env: C_COMPILER=gcc-4.5 CXX_COMPILER=g++-4.5
    #   addons:
    #     apt:
    #       sources:
    #       - ubuntu-toolchain-r-test
    #       - george-edison55-precise-backports
    #       packages:
    #       - gcc-4.5
    #       - g++-4.5
    #       - cmake
    #       - cmake-data
    # - env: C_COMPILER=gcc-4.4 CXX_COMPILER=g++-4.4
    #   addons:
    #     apt:
    #       sources:
    #       - ubuntu-toolchain-r-test
    #       - george-edison55-precise-backports
    #       packages:
    #       - gcc-4.4
    #       - g++-4.4
    #       - cmake
    #       - cmake-data

    ###
    ## clang on Linux
    ###
    - env: C_COMPILER=clang-3.9 CXX_COMPILER=clang++-3.9
      addons:
        apt:
          sources:
          - llvm-toolchain-precise-3.9
          - ubuntu-toolchain-r-test
          - george-edison55-precise-backports
          packages:
          - clang-3.9
          - cmake
          - cmake-data
    # - env: C_COMPILER=clang-3.8 CXX_COMPILER=clang++-3.8
    #   addons:
    #     apt:
    #       sources:
    #       - llvm-toolchain-precise-3.8
    #       - ubuntu-toolchain-r-test
    #       - george-edison55-precise-backports
    #       packages:
    #       - clang-3.8
    #       - cmake
    #       - cmake-data
    - env: C_COMPILER=clang-3.7 CXX_COMPILER=clang++-3.7
      addons:
        apt:
          sources:
          - llvm-toolchain-precise-3.7
          - ubuntu-toolchain-r-test
          - george-edison55-precise-backports
          packages:
          - clang-3.7
          - cmake
          - cmake-data
    # - env: C_COMPILER=clang-3.6 CXX_COMPILER=clang++-3.6
    #   addons:
    #     apt:
    #       sources:
    #       - llvm-toolchain-precise-3.6
    #       - ubuntu-toolchain-r-test
    #       - george-edison55-precise-backports
    #       packages:
    #       - clang-3.6
    #       - cmake
    #       - cmake-data
    - env: C_COMPILER=clang-3.5 CXX_COMPILER=clang++-3.5
      addons:
        apt:
          sources:
          - llvm-toolchain-precise-3.5
          - ubuntu-toolchain-r-test
          - george-edison55-precise-backports
          packages:
          - clang-3.5
          - cmake
          - cmake-data

    ###
    ## PGI
    ###
    - env: C_COMPILER=pgcc CXX_COMPILER=pgc++
      addons:
        apt:
          sources:
          - george-edison55-precise-backports
          packages:
          - cmake
          - cmake-data

    ###
    ## OS X
    ###
    - os: osx

before_install:
- if [ "${C_COMPILER}" = "pgcc" -o "${CXX_COMPILER}" = "pgc++" ]; then curl -s 'https://raw.githubusercontent.com/nemequ/pgi-travis/master/install-pgi.sh' | /bin/sh; fi

###
## If we use the matrix to set CC/CXX Travis overwrites the values,
## so instead we use C/CXX_COMPILER then copy the values to CC/CXX
## here (after Travis has set CC/CXX).
###
- if [ -n "${C_COMPILER}" ]; then export CC="${C_COMPILER}"; fi
- if [ -n "${CXX_COMPILER}" ]; then export CXX="${CXX_COMPILER}"; fi

# Debug builds by default
- if [ -z "${CMAKE_BUILD_TYPE}" ]; then export CMAKE_BUILD_TYPE=Debug; fi

- mkdir build
- cd build

script:
- if [ "${CXX}" != "pgc++" ]; then export AVX_FLAG="-mavx"; fi
- cmake .. -DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE}" -DCMAKE_CXX_COMPILER="${CXX_COMPILER}" -DCMAKE_CXX_FLAGS="${AVX_FLAG} ${CXXFLAGS}"
- make VERBOSE=1