brew install curl libpng cmake git glew wget
    wget https://github.com/glfw/glfw/releases/download/3.1.1/glfw-3.1.1.zip
    unzip glfw-3.1.1.zip
    cd glfw-3.1.1
    mkdir build
    cd build
    cmake .. -DBUILD_SHARED_LIBS=1
    make -j 4
    sudo make install
    cd ../..
    git clone https://github.com/rjktcby/3dmap
    cd 3dmap
    make -f Makefile.mac