libiconv incompatability with security update?

[Fred and Margot Dushin]

Trying to build gnome on a macbook, with yesterday's security update,  
and I'm getting a lot of link warnings (duplicate symbols) when  
building various executables (the last one was for evolution-data- 
server), complaining about libiconv in /usr/lib, against the new  
version I have in /opt/local/lib.  libtool then fails to link, though  
the reasons are unclear.

This is a fresh install of Darwinports on a new macbook, with of  
course the latest security update installed.

I checked the version of libiconv in /usr/lib, and indeed its  
timestamp is that in my log for the installed security update.

Did Apple break our gnome build?

Also, slightly off topic, but does anyone know how to get a listing  
of all affected files when a(n OS X) package is installed?

Thanks,
Fred