recompiling ipfw source-code

[M. V.]

hi everybody,

I'm trying to make some changes in ipfw code. but my problem is, when i make a change in ipfw code in "/usr/src/sys/netinet/ipfw" , this folder doesn't have any Makefile, and i have to compile "/usr/src" instead, which takes a lot of time (almost 20 minutes everytime i try to compile), and this makes what i'm trying to do almost impossible.


so i wanted to ask, does anyone know an easier or quicker way to compile ipfw (/usr/src/sys/netinet/ipfw), or maybe a simpler Makefile or a shell to do this.

thank you.