You will need to install CUDA before installing kabukinai.
The most straight-forward way of doing this is to go to the NVIDIA CUDA website, and follow the instructions for your platform:
http://docs.nvidia.com/cuda/cuda-installation-guide-linux/
You will also need to install cmake before proceeding.
On Debian based linux systems, this can be done by executing at the command line:
# sudo apt-get install cmake
On RedHat based linux systems, execute (note that on CentOS you may first need to run yum install epel-release):
# sudo yum install cmake3
On OS X, cmake can be installed using Homebrew
# brew install cmake
To build kabukinai, go to the directory containing this file and type at the command line:
make