1. 安装xcode
2. 安装cmake
3. git clone https://github.com/glfw/glfw.git
4. cd <glfw_dir>; mkdir build; cd build
5. cmake ..
6. cmake -C cmake**install.cmake
7. cd <test_dir>; cp <glfw_dir>/examples/simple.c .
8. cc -o simple simple.c -lglfw3 -framework Cocoa -framework OpenGL -framework IOKit -framework CoreVideo