How to compile an extension into sqlite.?

I would lime to compile an extension into sqlite for loading at runtime.

The file I am using is extension - functions.c from http://ift.tt/1w2MjDw

I have been able to compile into a loadable module but I need to statically link it for loading at runtime (using shell.c to create an interface at run time)

I have read the manual on linking, but to be honest, it's a little bit beyond my scope of comprehension!

Could someone let me know what I need to do to compile please?

Thanks in advance.

Kind regards,

Glenn