I think it is because in src/usr.bin/ldd/ldd_elf/Makefile, rtld.c is
not named in SRCS?

x:~/non-anoncvs/src> cvs -q update -dP && make distclean && \
> sh build.sh -d -D ../obj -R ../release

*snip snip*

/home/dyoung/non-anoncvs/src/tools/obj/tools.NetBSD-1.6I-i386/bin/i386--netbsdelf-gcc   -o ldd -nostdlib  -Wl,-rpath-link,/home/dyoung/non-anoncvs/src/../obj/lib:/home/dyoung/non-anoncvs/src/../obj/usr/lib  -L/home/dyoung/non-anoncvs/src/../obj/lib /home/dyoung/non-anoncvs/src/../obj/usr/lib/crt0.o /home/dyoung/non-anoncvs/src/../obj/usr/lib/crtbegin.o ldd.o xmalloc.o debug.o map_object.o load.o search.o headers.o paths.o  -L/home/dyoung/non-anoncvs/src/../obj/usr/lib  -lgcc -lc -lgcc /home/dyoung/non-anoncvs/src/../obj/usr/lib/crtend.o
search.o: In function `_rtld_load_library':
search.o(.text+0x125): undefined reference to `_rtld_dlerror'
search.o(.text+0x239): undefined reference to `_rtld_dlerror'
collect2: ld returned 1 exit status
*** Error code 1

Stop.
nbmake: stopped in /home/dyoung/non-anoncvs/src/usr.bin/ldd/ldd_elf
*** Error code 1

Stop.
nbmake: stopped in /home/dyoung/non-anoncvs/src/usr.bin/ldd/ldd_elf
*** Error code 1

Stop.
nbmake: stopped in /home/dyoung/non-anoncvs/src/usr.bin/ldd
*** Error code 1

Stop.
nbmake: stopped in /home/dyoung/non-anoncvs/src/usr.bin
*** Error code 1

Stop.
nbmake: stopped in /home/dyoung/non-anoncvs/src
*** Error code 1

Stop.
nbmake: stopped in /home/dyoung/non-anoncvs/src
*** Error code 1

Stop.
nbmake: stopped in /home/dyoung/non-anoncvs/src
*** Error code 1

Stop.
nbmake: stopped in /home/dyoung/non-anoncvs/src

x:~/non-anoncvs/src> sudo sh build.sh -d -D ../obj -R ../release

-- 
David Young             OJC Technologies
dyoung@ojctech.com      Engineering from the Right Brain
                        Urbana, IL * (217) 278-3933