language: ruby
sudo: false
addons:
  apt:
    packages:
    - zlib1g-dev
    - libncurses5-dev
    - libtinfo-dev   
before_install:
  - gem update --system
  - if [ $TRAVIS_OS_NAME = osx ]; then brew update; brew install xz ; fi
before_script:
  - cd ext
  - ruby mkrf_conf.rb
  - rake -f Rakefile
  - cd ../
os:
  - linux
  - osx
rvm:
  - 2.1.10
  - 2.2.5
  - 2.3.5
  - 2.4.2
  - 2.5.0