Compiling a module

• Two solutions

• « Out of tree »
• When the code is outside of the kernel source tree, in a different directory
• Advantage: Might be easier to handle than modifications to the kernel itself
• Drawbacks: Not integrated to the kernel configuration/compilation process, needs to be built separately, the driver cannot be built statically
• Inside the kernel tree
• Well integrated into the kernel configuration/compilation process
• Driver can be built statically if needed