Library X11 and CMake are required to run this code so if you're using Debian-based (Linux Mint / Ubuntu) don't forget to:
sudo apt-get install libX11-dev
sudo apt-get install cmake
# Clone the repository
git clone https://github.com/thamenato/computer_graphics_ufscar2015.git
# Cloning into 'computer_graphics_ufscar2015'...
# ...
# Navigate to the directory
cd computer_graphics_ufscar2015
# Make a build directory and navigate to it
mkdir build
cd build
# Generate CMake cache and other stuff
cmake ..
# Time to compile
make
# If everything goes well and you see [100%] Built target monitor_cthulhu
# Execute the binary
./bin/monitor_cthulhu