Can't make build on /usr/src

[John Klos <john%klos.com@localhost>]

Hello,

I've tried to do a make build on the root level of /usr/src; it runs 
for an hour or so, then I get:

all ===> sbin/mount_ados
cc -O2 -m68060 -O2 -Wall -Wstrict-prototypes -Wmissing-prototypes 
-Wpointer-arith -Werror   -I/usr/src/sbin/mount_ados/../../sys 
-I/usr/src/sbin/mount_ados/../mount -c mount_ados.c
cc1: warnings being treated as errors
mount_ados.c: In function `main':
mount_ados.c:79: warning: implicit declaration of function `getopt'
mount_ados.c:82: `optarg' undeclared (first use in this function)
mount_ados.c:82: (Each undeclared identifier is reported only once
mount_ados.c:82: for each function it appears in.)
mount_ados.c:103: `optind' undeclared (first use in this function)
mount_ados.c:110: warning: implicit declaration of function `getcwd'
mount_ados.c: In function `a_mask':
mount_ados.c:193: `optarg' undeclared (first use in this function)
*** Error code 1

Stop.
*** Error code 1

Stop.
*** Error code 1

Stop.
*** Error code 1

Stop.

My mk.conf is:
LOCALBASE=/usr/local
USE_RSAREF2=YES
USA_RESIDENT=YES
M68060=YES
COPTS+=-O2
CFLAGS+=-m68060

I've started building my second 68060 server, so I'm using 1.4.2 and 
I wanted to make everything '060 optimised. Anyone know why I'm 
getting stuck? Is this something I can skip, since I don't need to 
use AmigaDOS partitions? How would I skip it if I wanted to?

Thanks,
John Klos