Compiling in Debian
In order to build examples for current prebuilt kernel, you should install linux-headers package for you current kernel:
$ sudo apt-get install linux-headers-$(uname -r)
You will also need make tools:
$ sudo apt-get install make
Now just run make in example dir you want to build.
NOTE: These examples were designed for latest linux kernel and you might not be able to build some of them for older prebuilt kernels from Debian-based distributives.