language: ruby
rvm:
  - 2.2.2
  - 2.3.3
  - 2.4.0

sudo: false

# we need a more recent cmake than travis/linux provides (at least 2.8.9):
addons:
  apt:
    sources:
      - kalakris-cmake
    packages:
      - cmake

cache: bundler
git:
  depth: 10