message: Try with Header Only version of CGAL
diff: @@ -19,20 +19,15 @@ addons:
  - libgmp3-dev
  - libmpfr-dev
  - libtbb-dev
  - - qtbase5-dev
  - - libqt5sql5-sqlite
  - - libqt5opengl5-dev
  - - qtscript5-dev
  - - libqt5svg5-dev
  - - qttools5-dev
  - - qttools5-dev-tools
  - - qml-module-qtgraphicaleffects
  - - libopencv-dev
  - - mesa-common-dev
  - - libmetis-dev
  - - libglu1-mesa-dev
  - - libcgal-dev
  + - curl
  +install:
  + - curl -LO "https://github.com/CGAL/cgal/releases/download/releases%2FCGAL-4.12.1/CGAL-4.12.1.tar.xz"
  + - tar xf CGAL-4.12.1.tar.xz
  + - cd CGAL-4.12.1
  + - cmake -DCMAKE_BUILD_TYPE=Release -DCGAL_HEADER_ONLY=ON .
  + - make all install
  + - cd ..
  script:
  - mkdir -p build
  - cd build
  