Fudge is a

Install dependencies (Emscripten, GLFW3, GLEW)

sudo apt-get install libglew-dev emscripten libglfw3 libglfw3-dev

To build the OpenGL version, run

make && ./fdg

To build for WebGL, run

make -f Makefile_emscripten

Emscripten will generate index.js, index.wasm under the build directory. The webpage can be opened at build/index.html.