Adding more functionality on top of L4Linux

Hi, Are there any guides which I can add the following features onto L4Linux ? - GCC, Make, CCID, PCSC If the features do not exist in L4Linux, how do I build my own L4Linux image with these features and what do I need to modify to ensure they work properly on L4Linux ? -- +---------------------------------------------------------+ | PGP Secure Email Key ID:6FBFC19D | +---------------------------------------------------------+