Building RTEMS BSP???

[William Meadows]

I'm re-submitting this on the fluke that the previous subject heading
"Re-Building RTEMS BSP" caused skippage from you all :) Hopefully,
everyone just thought I was being replied to! Thanks in advance.

Previous Message:
What is the standard procedure for building a modified BSP?
I want to change console.c from pc386 BSP and use changes 
from Application side.
Is a full re-build of RTEMS necessary?(ie. run ./bit_rtems script with
modified files in path.)
Or how do I build libbsp.a (I guess) alone? 

Thanks
wil