I downloaded NetBSD-current but am having problems 
building the system. I have an i386 platform. I suspect I
don't have environment variables correctly set or
am not following the correct steps in the make process.

So, is there any document describing this step-by-step
for NetBSD-current?

I need to rebuild the kernel and the libc library.

For the libc make, I get the error:
 "machine/disklabel.h: No such file or directory"