Problems installing oscam when Compiling

Hi,

I'm following a guide to install oscam and i keep getting an error at this stage:
cd oscam
sudo cmake -DWEBIF=1 -DPCSC=1
sudo make

The Error is:

~/oscam$ sudo cmake -DWEBIF=1 -DPCSC=1
CMake Error: The source directory "/home/username/oscam" does not appear to contain CMakeLists.txt.
Specify --help for usage, or press the help button on the CMake GUI.

Many Thanks