.travis.yml

# Sample .travis.yml for R projects.
#
# See README.md for instructions, or for more configuration options,
# see the wiki:
#   https://github.com/craigcitro/r-travis/wiki

os: linux
dist: trusty
language: r
sudo: required
r_binary_packages:
  - stringr
  - devtools
# Travis Octave version
env: OVERSION="Travis (3.8)"
apt_packages: 
  - liboctave-dev
cache: packages
r: release
warnings_are_errors: false
# Add PPA for testing on multiple octave versions
addons:
  apt:
    sources:
      - sourceline: 'ppa:kwwette/octaves'
before_install:
  - sudo apt-get install -y texlive-bibtex-extra
  - sudo apt-get -qq update
  
# multi-version check
matrix:
  include:
    - env: OVERSION="Travis (3.8)"
    - env: OVERSION="4.0" # 4.0
      apt_packages:
        - liboctave4.0-dev
    - env: OVERSION="4.2" # 4.2
      before_install:
        - sudo apt-get install -y texlive-bibtex-extra
        - sudo add-apt-repository -r ppa:rwky/ppa -y # to avoid conflict with libgraphicsmagick3 (see https://github.com/swig/swig/issues/909)
        - sudo rm /etc/apt/sources.list.d/rwky*.list* # force complete deletion 
        - sudo apt-get -qq update
      apt_packages:
        - liboctave4.2-dev
        - libsuitesparse-dev
        - libarpack2-dev
        - libqrupdate-dev
        - libgl2ps-dev
        - libgraphicsmagick++1-dev