language: cpp
sudo: required
dist: trusty

os:
  - linux
  - osx

compiler:
  - gcc
  - clang

before_install:
  - if [ $TRAVIS_OS_NAME == linux ]; then 
       sudo apt-get update -qq;
       sudo apt-get install -y --no-install-recommends libxrandr-dev libxi-dev libxxf86vm-dev libsdl2-dev;
       wget https://github.com/glfw/glfw/releases/download/3.2.1/glfw-3.2.1.zip;
       unzip glfw-3.2.1.zip && cd glfw-3.2.1; 
       cmake -DBUILD_SHARED_LIBS=true -DGLFW_BUILD_EXAMPLES=false -DGLFW_BUILD_TESTS=false -DGLFW_BUILD_DOCS=false .;
       sudo make -j $CPU_NUM install && cd ..;
    fi
  - if [ $TRAVIS_OS_NAME == osx ]; then 
       brew update;
       brew install glfw3;
       brew install sdl2;
    fi

script: 
  - make -C examples/opengl2_example
  - make -C examples/opengl3_example
  - make -C examples/sdl_opengl3_example