This code support two methods of building. The recommended way is to use DKMS to build and package the project. You must have DKMS installed on your system. Running DKMS=1 make install will build and install the package on your system.
Alternatively the standard make is also available. This results in a kernel object that you have to install yourself.
A recommended approach is to execute the following:
export KERNELDIR=../linux
export ARCH=arm
export CROSS_COMPILE=../tools/arm-bcm2708/arm-bcm2708hardfp-linux-gnueabi/bin/arm-bcm2708hardfp-linux-gnueabi-
make build