language: ruby rvm: - 1.9 - 2.0 - 2.1 - 2.2 - ruby-head - rbx-2 env: matrix: - "NARRAY=1" - "" matrix: allow_failures: - rvm: ruby-head - rvm: rbx-2 before_install: - sudo apt-get update -qq - sudo apt-get install -y libgsl0-dev