rpm --rebuild

[Bo Peng <bpeng stat rice edu>]

Hi, 

I just upgraded to redhat 8.0 and need to rebuild some of my own rpms 
from source. However, when I use

  rpm --rebuild ...

I got "unknown option". I could not get all '-b' options either.  I 
checked my rpm but it is the newest version 4.1, I also installed 
rpm-devel, rpm-build but none of them help. What did I miss?

Thanks.

-- 
Bo Peng