I've previously hit these while building arm32:

> a) mbrlabel sees multiple struct mbr_partition definitions from
>    usr.sbin/mbrlabel/mbrlabel.h and machine/disklabel_mbr.h.

http://mail-index.netbsd.org/mlist/port-arm32/1998/12/20/0000.html

> b) apparently I have multiple bind libraries... inside and outside of libc:

http://mail-index.netbsd.org/mlist/current-users/1998/12/13/0004.html
(Adding USE_BIND4=YES to /etc/mk.conf also works around the problem)

Todd Whitesel
toddpw @ best.com