With up-to-date src:

#      link  ramdisk-big/ramdiskbin
/usr/BUILD/tools/bin/i386--netbsdelf-gcc -Wl,-nostdlib    -static -o ramdiskbin  -Wl,-rpath-link,/usr/BUILD/netbsd/lib:/usr/BUILD/netbsd/usr/lib  -L/usr/BUILD/netbsd/lib  -B/usr/BUILD/netbsd/usr/lib/ -B/usr/BUILD/netbsd/usr/lib/   ramdiskbin.o cat.cro chio.cro chmod.cro cp.cro dd.cro df.cro ed.cro ln.cro ls.cro mkdir.cro mt.cro mv.cro pax.cro pwd.cro rcmd.cro rm.cro sh.cro stty.cro sync.cro dhclient.cro disklabel.cro fdisk.cro fsck.cro fsck_ffs.cro ifconfig.cro init.cro mbrlabel.cro mknod.cro mount.cro mount_cd9660.cro mount_ext2fs.cro mount_ffs.cro mount_kernfs.cro mount_msdos.cro mount_nfs.cro mount_ntfs.cro newfs.cro ping.cro raidctl.cro reboot.cro restore.cro route.cro scsictl.cro shutdown.cro slattach.cro swapctl.cro sysctl.cro umount.cro ftp.cro gzip.cro less.cro sed.cro tip.cro installboot.cro bad144.cro chown.cro chroot.cro wiconfig.cro sysinst.cro progress.cro ping6.cro rtsol.cro  libhack.o -lbz2 -ledit -lutil -lcurses -ltermcap -lrmt -lcrypt -ll -lm -lz   -L/usr/BUI
 LD/netbsd/usr/lib -L/usr/BUILD/netbsd/usr/lib
/usr/BUILD/netbsd/usr/lib/libc.a(getmntinfo.o)(.text+0x70): In function `_getmntinfo':
: warning: warning: reference to obsolete getfsstat(); use getvfsstat()
ifconfig.cro(.text+0x23ad): In function `status$$from$$ifconfig':
: undefined reference to `agr_status'
ifconfig.cro(.rodata+0x598): undefined reference to `agraddport'
ifconfig.cro(.rodata+0x5ac): undefined reference to `agrremport'
collect2: ld returned 1 exit status

*** Failed target:  ramdiskbin