language: cpp

install:
  - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
  - sudo apt-get -qq update
  - sudo apt-get install -y g++-6 libstdc++-6-dev
  - sudo apt-get install -y valgrind
  - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-6 90
  - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-6 90

  # Install bison 3.0.4.
  - wget http://ftp.gnu.org/gnu/bison/bison-3.0.4.tar.gz
  - tar -xvzf bison-3.0.4.tar.gz
  - cd bison-3.0.4
  - ./configure && make && sudo make install
  - cd ..

  # Install flex 2.6.4
  - wget https://github.com/westes/flex/releases/download/v2.6.4/flex-2.6.4.tar.gz
  - tar -xvzf flex-2.6.4.tar.gz
  - cd flex-2.6.4
  - ./configure && make && sudo make install
  - cd ..

  # Show installed versions.
  - which g++
  - g++ -v
  - bison --version
  - flex --version
  - valgrind --version
  - if [ "$CXX" = "clang++" ]; then export CXXFLAGS="-stdlib=libc++"; fi

compiler:
  - gcc
  - clang

script:
  # bi build with flex/bison files checked into repo
  - make -j4
  - make test
  - make test_example

  # build flex/bison files in CI
  - make cleanall
  - make -j4
  - make test
  - make test_example

  # Test if benchmark can be built.
  # - make benchmark