before_install:
  - sudo add-apt-repository -y ppa:texlive-backports/ppa
  - sudo apt-get update
install:
   - sudo apt-get install -y texlive-latex-base 
   - sudo apt-get install -y texlive-latex-recommended texlive-latex-extra
   - sudo apt-get install -y texlive-science 
   - sudo apt-get install -y texlive-fonts-recommended texlive-fonts-extra
script:
  - make clean
  - make BUILD_STRATEGY=latex
  - make clean
  - make