kldload fails (missing symbols?)

On a updated build of -CURRENT (as of when I ran cvsup on September  
1st), I have a strange issue running kldload.  Some modules will  
throw an error, claiming they're missing symbols (but they don't say  
what symbol).  Here's an example of such output:
machine# kldload zlib
link_elf: symbol  undefined
kldload: can't load zlib: No such file or directory
machine# kldload xfs
link_elf: symbol  undefined
kldload: can't load xfs: No such file or directory
machine# kldload lpt
machine#

As you may notice, the actual symbol which is undefined isn't named-- 
according to the error.  dmesg only contains the exact same output.   
Oddly enough, not all modules are impacted, either--lpt loaded fine,  
as do a few other modules.

I did go back to an April snapshot of -CURRENT, and this problem did  
not exist (zlib loaded fine), so presumably, something has changed in  
the five months since then.  Also, this is a SPARC64 build of  
FreeBSD.  If my question would be better directed to that list,  
please let me know.

Thanks in advance,

Doug Kelly