bz2lib autoconfiguration ??

[Brian Keener]

Sorry to jump in here - but this is an opportunity for me to learn.

Assume I have a current build of the tree and I need to get the bz2lib 
and I did the 'cvs update -d' and now want to rebuild me copy of cygwin 
and cinstall and such.  

How do I tell configure to do a reconfigure and then do a rebuild of the 
whole tree without having to delete my build and install directories.  
Seems like when I try to do this without a major cleanup (removing the 
build and install directories I get strange results (after I have done a 
cvs update). 

Thanks for any insight

bk