dbus on 10.3 chokes because "-undefined suppress" in CFLAGS

Dbus fails on 10.3 with: /usr/bin/libtool: internal link edit command failed make[3]: *** [libdbus-1.la] Error 1 make[2]: *** [all] Error 2 make[1]: *** [all-recursive] Error 1 make: *** [all] Error 2 http://trac.macosforge.org/projects/macports/ticket/10659 but it builds fine on 10.3 if I remove "-undefined suppress" from the CFLAGS. Why would that be? And is removing it an acceptable fix? Mark