56 files changed, 56 insertions, 56 deletions

diff --git a/sbin/atm/atmconfig/Makefile b/sbin/atm/atmconfig/Makefile
index 1146737a49bf9..ddbee80a4d594 100644
--- a/sbin/atm/atmconfig/Makefile
+++ b/sbin/atm/atmconfig/Makefile
@@ -8,7 +8,7 @@
 PROG=	atmconfig
 SRCS=	main.c diag.c natm.c
 MAN=	atmconfig.8
-WARNS=	9
+WARNS?=	9
 
 FILES=	atmconfig.help
 FILESDIR= /usr/share/doc/atm
diff --git a/sbin/dhclient/Makefile.inc b/sbin/dhclient/Makefile.inc
index d6b80609e40cf..090d20834e142 100644
--- a/sbin/dhclient/Makefile.inc
+++ b/sbin/dhclient/Makefile.inc
@@ -2,7 +2,7 @@
 
 MAINTAINER=     mbr
 
-WARNS=		0
+WARNS?=		0
 CFLAGS+= -I${DIST_DIR}/includes -DENABLE_POLLING_MODE -DNOMINUM
 
 CLIENTBINDIR=	/sbin
diff --git a/sbin/dumpon/Makefile b/sbin/dumpon/Makefile
index 12fced525c5f6..2134cd52b8d62 100644
--- a/sbin/dumpon/Makefile
+++ b/sbin/dumpon/Makefile
@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 PROG=	dumpon
-WARNS=	4
+WARNS?=	4
 MAN=	dumpon.8
 
 .include <bsd.prog.mk>
diff --git a/sbin/fdisk/Makefile b/sbin/fdisk/Makefile
index 8f0d8e9250962..4289dc80e29a2 100644
--- a/sbin/fdisk/Makefile
+++ b/sbin/fdisk/Makefile
@@ -2,7 +2,7 @@
 
 PROG=	fdisk
 SRCS=	fdisk.c geom_mbr_enc.c
-WARNS=	4
+WARNS?=	4
 MAN=	fdisk.8
 
 .PATH:	${.CURDIR}/../../sys/geom
diff --git a/sbin/fdisk_pc98/Makefile b/sbin/fdisk_pc98/Makefile
index eeb3446b8d5fb..d214888584a59 100644
--- a/sbin/fdisk_pc98/Makefile
+++ b/sbin/fdisk_pc98/Makefile
@@ -2,7 +2,7 @@
 
 PROG=	fdisk
 SRCS=	fdisk.c geom_pc98_enc.c
-WARNS=	0
+WARNS?=	0
 MAN=	fdisk.8
 
 CFLAGS	+= -DPC98
diff --git a/sbin/fsck_ffs/Makefile b/sbin/fsck_ffs/Makefile
index 0e9ea699804e6..5b7474fd338bc 100644
--- a/sbin/fsck_ffs/Makefile
+++ b/sbin/fsck_ffs/Makefile
@@ -8,7 +8,7 @@ MAN=	fsck_ffs.8
 MLINKS=	fsck_ffs.8 fsck_ufs.8 fsck_ffs.8 fsck_4.2bsd.8
 SRCS=	dir.c ea.c fsutil.c inode.c main.c pass1.c pass1b.c pass2.c pass3.c \
 	pass4.c pass5.c setup.c utilities.c ffs_subr.c ffs_tables.c
-WARNS=	2
+WARNS?=	2
 CFLAGS+= -I${.CURDIR}
 
 .PATH:	${.CURDIR}/../../sys/ufs/ffs
diff --git a/sbin/fsck_msdosfs/Makefile b/sbin/fsck_msdosfs/Makefile
index 715afe436af4e..fd539b94f9d79 100644
--- a/sbin/fsck_msdosfs/Makefile
+++ b/sbin/fsck_msdosfs/Makefile
@@ -9,6 +9,6 @@ MAN=	fsck_msdosfs.8
 SRCS=	main.c check.c boot.c fat.c dir.c fsutil.c
 
 CFLAGS+= -I${FSCK}
-WARNS=	0
+WARNS?=	0
 
 .include <bsd.prog.mk>
diff --git a/sbin/fsirand/Makefile b/sbin/fsirand/Makefile
index 948ee929c0533..7e2da62408e34 100644
--- a/sbin/fsirand/Makefile
+++ b/sbin/fsirand/Makefile
@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PROG=	fsirand
-WARNS=	0
+WARNS?=	0
 MAN=	fsirand.8
 DPADD=	${LIBUTIL}
 LDADD=	-lutil
diff --git a/sbin/gpt/Makefile b/sbin/gpt/Makefile
index a680986f0fe46..659687b39557e 100644
--- a/sbin/gpt/Makefile
+++ b/sbin/gpt/Makefile
@@ -2,7 +2,7 @@
 
 PROG=	gpt
 SRCS=	add.c create.c destroy.c gpt.c map.c migrate.c recover.c show.c
-WARNS=	4
+WARNS?=	4
 MAN=	gpt.8
 
 .include <bsd.prog.mk>
diff --git a/sbin/idmapd/Makefile b/sbin/idmapd/Makefile
index 65921572f7df9..cd45007027afc 100644
--- a/sbin/idmapd/Makefile
+++ b/sbin/idmapd/Makefile
@@ -7,7 +7,7 @@ SRCS=	idmapd.c
 MAN=	idmapd.8
 
 CFLAGS+= -DNFS -I/usr/src/sys
-WARNS=	2
+WARNS?=	2
 
 .PATH:
 
diff --git a/sbin/ifconfig/Makefile b/sbin/ifconfig/Makefile
index ceb660aa60c0f..252f8b60ea3b3 100644
--- a/sbin/ifconfig/Makefile
+++ b/sbin/ifconfig/Makefile
@@ -32,6 +32,6 @@ LDADD=	-lipx
 
 CFLAGS+=-DNS -Wall -Wmissing-prototypes -Wcast-qual -Wwrite-strings \
 	-Wnested-externs -I..
-WARNS=	0
+WARNS?=	0
 
 .include <bsd.prog.mk>
diff --git a/sbin/init/Makefile b/sbin/init/Makefile
index 75ec72dde4d63..ce2e618ca4e5d 100644
--- a/sbin/init/Makefile
+++ b/sbin/init/Makefile
@@ -7,7 +7,7 @@ MLINKS=	init.8 securelevel.8
 BINMODE=500
 INSTALLFLAGS=-fschg -b -B.bak
 CFLAGS+=-DDEBUGSHELL -DSECURE -DLOGIN_CAP -DCOMPAT_SYSV_INIT
-WARNS=	0
+WARNS?=	0
 DPADD=	${LIBUTIL} ${LIBCRYPT}
 LDADD=	-lutil -lcrypt
 
diff --git a/sbin/ip6fw/Makefile b/sbin/ip6fw/Makefile
index 8100032dbe1b2..dc91fd1cab306 100644
--- a/sbin/ip6fw/Makefile
+++ b/sbin/ip6fw/Makefile
@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 PROG=   ip6fw
-WARNS=	0
+WARNS?=	0
 MAN=	ip6fw.8
 
 .include <bsd.prog.mk>
diff --git a/sbin/ipf/Makefile b/sbin/ipf/Makefile
index 731894817a0ba..1964def66ef8f 100644
--- a/sbin/ipf/Makefile
+++ b/sbin/ipf/Makefile
@@ -9,7 +9,7 @@ CFLAGS+=-DUSE_INET6 -DIPL_NAME=\"/dev/ipl\"
 CFLAGS+=-I${.CURDIR}/../../sys/contrib/ipfilter/netinet
 CFLAGS+=-I${.CURDIR}/../../sys/contrib/ipfilter
 CFLAGS+=-I${.CURDIR}/../../contrib/ipfilter
-WARNS=	0
+WARNS?=	0
 
 MAINTAINER=	darrenr@freebsd.org
 
diff --git a/sbin/ipfs/Makefile b/sbin/ipfs/Makefile
index f067de22072ec..9639352621336 100644
--- a/sbin/ipfs/Makefile
+++ b/sbin/ipfs/Makefile
@@ -9,7 +9,7 @@ CFLAGS+=-DUSE_INET6 -DIPL_NAME=\"/dev/ipl\"
 CFLAGS+=-I${.CURDIR}/../../sys/contrib/ipfilter/netinet
 CFLAGS+=-I${.CURDIR}/../../sys/contrib/ipfilter
 CFLAGS+=-I${.CURDIR}/../../contrib/ipfilter
-WARNS=	0
+WARNS?=	0
 
 MAINTAINER=	darrenr@freebsd.org
 
diff --git a/sbin/ipfstat/Makefile b/sbin/ipfstat/Makefile
index 43da14b357ab8..80fff2bb8d53c 100644
--- a/sbin/ipfstat/Makefile
+++ b/sbin/ipfstat/Makefile
@@ -9,7 +9,7 @@ CFLAGS+=-DUSE_INET6 -DIPL_NAME=\"/dev/ipl\" -DSTATETOP
 CFLAGS+=-I${.CURDIR}/../../sys/contrib/ipfilter/netinet
 CFLAGS+=-I${.CURDIR}/../../sys/contrib/ipfilter
 CFLAGS+=-I${.CURDIR}/../../contrib/ipfilter
-WARNS=	0
+WARNS?=	0
 
 DPADD=	${LIBNCURSES} ${LIBKVM}
 LDADD=	-lncurses -lkvm
diff --git a/sbin/ipmon/Makefile b/sbin/ipmon/Makefile
index e4a9da5176626..f1c006d57a52d 100644
--- a/sbin/ipmon/Makefile
+++ b/sbin/ipmon/Makefile
@@ -9,7 +9,7 @@ SRCS=	ipmon.c
 CFLAGS+=-DUSE_INET6 -DIPL_NAME=\"/dev/ipl\" -DLOGFAC=LOG_SECURITY
 CFLAGS+=-I${.CURDIR}/../../sys/contrib/ipfilter
 CFLAGS+=-I${.CURDIR}/../../contrib/ipfilter
-WARNS=	0
+WARNS?=	0
 
 MAINTAINER=	darrenr@freebsd.org
 
diff --git a/sbin/ipnat/Makefile b/sbin/ipnat/Makefile
index 81c407b2ebe45..6cb9d4abfe32a 100644
--- a/sbin/ipnat/Makefile
+++ b/sbin/ipnat/Makefile
@@ -10,7 +10,7 @@ CFLAGS+=-DUSE_INET6 -DIPL_NAME=\"/dev/ipl\"
 CFLAGS+=-I${.CURDIR}/../../sys/contrib/ipfilter/netinet
 CFLAGS+=-I${.CURDIR}/../../sys/contrib/ipfilter
 CFLAGS+=-I${.CURDIR}/../../contrib/ipfilter
-WARNS=	0
+WARNS?=	0
 
 DPADD=	${LIBKVM}
 LDADD=	-lkvm
diff --git a/sbin/ldconfig/Makefile b/sbin/ldconfig/Makefile
index 776fef457db9a..f2a2e51e71f97 100644
--- a/sbin/ldconfig/Makefile
+++ b/sbin/ldconfig/Makefile
@@ -4,7 +4,7 @@ PROG=	ldconfig
 SRCS=	elfhints.c ldconfig.c shlib.c support.c
 LDDIR?= ${.CURDIR}/../../libexec/rtld-aout
 CFLAGS+=-I${LDDIR} -DFREEBSD_AOUT
-WARNS=	0
+WARNS?=	0
 MAN=	ldconfig.8
 
 .PATH: ${LDDIR}
diff --git a/sbin/mca/Makefile b/sbin/mca/Makefile
index 89a29e72da320..0aeed64e6183c 100644
--- a/sbin/mca/Makefile
+++ b/sbin/mca/Makefile
@@ -1,6 +1,6 @@
 # $FreeBSD$
 PROG=	mca
-WARNS=	4
+WARNS?=	4
 NOMAN=	yes
 
 .include <bsd.prog.mk>
diff --git a/sbin/mknod/Makefile b/sbin/mknod/Makefile
index c83c6bcd0da7b..d28d3a5953777 100644
--- a/sbin/mknod/Makefile
+++ b/sbin/mknod/Makefile
@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PROG=	mknod
-WARNS=	0
+WARNS?=	0
 MAN=	mknod.8
 
 .include <bsd.prog.mk>
diff --git a/sbin/mount_cd9660/Makefile b/sbin/mount_cd9660/Makefile
index 0841157ecdba9..80af58a5f19c1 100644
--- a/sbin/mount_cd9660/Makefile
+++ b/sbin/mount_cd9660/Makefile
@@ -9,7 +9,7 @@ LDADD=	-lkiconv
 
 MOUNT=	${.CURDIR}/../mount
 CFLAGS+= -I${MOUNT}
-WARNS=	0
+WARNS?=	0
 
 # Needs to be dynamically linked for optional dlopen() access to
 # userland libiconv
diff --git a/sbin/mount_hpfs/Makefile b/sbin/mount_hpfs/Makefile
index 12b30c4e80878..084377407787f 100644
--- a/sbin/mount_hpfs/Makefile
+++ b/sbin/mount_hpfs/Makefile
@@ -8,7 +8,7 @@ MAN=	mount_hpfs.8
 
 MOUNT=	${.CURDIR}/../mount
 CFLAGS+=-I${MOUNT} -DHPFS
-WARNS=	0
+WARNS?=	0
 
 .PATH:	${MOUNT}
 
diff --git a/sbin/mount_nfs/Makefile b/sbin/mount_nfs/Makefile
index 0d3751498e87e..68fe70ac3e13a 100644
--- a/sbin/mount_nfs/Makefile
+++ b/sbin/mount_nfs/Makefile
@@ -9,7 +9,7 @@ MAN=	mount_nfs.8
 MOUNT=	${.CURDIR}/../mount
 UMNTALL= ${.CURDIR}/../../usr.sbin/rpc.umntall
 CFLAGS+= -DNFS -I${MOUNT} -I${UMNTALL}
-WARNS=	2
+WARNS?=	2
 
 .PATH: ${MOUNT} ${UMNTALL}
 
diff --git a/sbin/mount_nfs4/Makefile b/sbin/mount_nfs4/Makefile
index c418b72f7e8e7..881d11904ae13 100644
--- a/sbin/mount_nfs4/Makefile
+++ b/sbin/mount_nfs4/Makefile
@@ -9,7 +9,7 @@ MAN=	mount_nfs4.8
 MOUNT=	${.CURDIR}/../mount
 UMNTALL= ${.CURDIR}/../../usr.sbin/rpc.umntall
 CFLAGS+= -DNFS -I${MOUNT} -I${UMNTALL}
-WARNS=	2
+WARNS?=	2
 
 .PATH: ${MOUNT} ${UMNTALL}
 
diff --git a/sbin/mount_ntfs/Makefile b/sbin/mount_ntfs/Makefile
index 5a301105fef78..8a3e75e08bb28 100644
--- a/sbin/mount_ntfs/Makefile
+++ b/sbin/mount_ntfs/Makefile
@@ -10,7 +10,7 @@ LDADD=	-lkiconv
 
 MOUNT=	${.CURDIR}/../mount
 CFLAGS+=-I${MOUNT}
-WARNS=	0
+WARNS?=	0
 
 # Needs to be dynamically linked for optional dlopen() access to
 # userland libiconv
diff --git a/sbin/mount_nullfs/Makefile b/sbin/mount_nullfs/Makefile
index 7139b3f9bd1de..9a6be28a960ca 100644
--- a/sbin/mount_nullfs/Makefile
+++ b/sbin/mount_nullfs/Makefile
@@ -7,7 +7,7 @@ MAN=	mount_nullfs.8
 
 MOUNT=	${.CURDIR}/../mount
 CFLAGS+=-I${MOUNT}
-WARNS=	0
+WARNS?=	0
 
 .PATH:	${MOUNT}
 
diff --git a/sbin/mount_std/Makefile b/sbin/mount_std/Makefile
index 2b8d62b33f56a..110a5256cf22b 100644
--- a/sbin/mount_std/Makefile
+++ b/sbin/mount_std/Makefile
@@ -11,7 +11,7 @@ MLINKS=	mount_std.8 mount_devfs.8 \
 
 MOUNT=	${.CURDIR}/../mount
 CFLAGS+= -I${MOUNT}
-WARNS=	0
+WARNS?=	0
 
 .PATH:	${MOUNT}
 
diff --git a/sbin/mount_udf/Makefile b/sbin/mount_udf/Makefile
index bd9163c8720c8..3096c8e04566e 100644
--- a/sbin/mount_udf/Makefile
+++ b/sbin/mount_udf/Makefile
@@ -9,7 +9,7 @@ LDADD=	-lkiconv
 MOUNT=	${.CURDIR}/../mount
 CFLAGS+= -I${MOUNT} -I${.CURDIR}/../../sys -Wall
 .PATH:	${MOUNT}
-WARNS= 1
+WARNS?= 1
 
 # Needs to be dynamically linked for optional dlopen() access to
 # userland libiconv
diff --git a/sbin/mount_umapfs/Makefile b/sbin/mount_umapfs/Makefile
index bb19eaeb3daae..0f5891fb2bf8c 100644
--- a/sbin/mount_umapfs/Makefile
+++ b/sbin/mount_umapfs/Makefile
@@ -7,7 +7,7 @@ MAN=	mount_umapfs.8
 
 MOUNT=	${.CURDIR}/../mount
 CFLAGS+=-I${MOUNT}
-WARNS=	0
+WARNS?=	0
 
 .PATH:	${MOUNT}
 
diff --git a/sbin/mount_unionfs/Makefile b/sbin/mount_unionfs/Makefile
index dbe870fa80ec2..02965042dd871 100644
--- a/sbin/mount_unionfs/Makefile
+++ b/sbin/mount_unionfs/Makefile
@@ -7,7 +7,7 @@ MAN=	mount_unionfs.8
 
 MOUNT=	${.CURDIR}/../mount
 CFLAGS+=-I${MOUNT}
-WARNS=	0
+WARNS?=	0
 
 .PATH:	${MOUNT}
 
diff --git a/sbin/natd/Makefile b/sbin/natd/Makefile
index 2dcf9c6886545..c6bf3267a7cfe 100644
--- a/sbin/natd/Makefile
+++ b/sbin/natd/Makefile
@@ -2,7 +2,7 @@
 
 PROG		= natd
 SRCS		= natd.c icmp.c
-WARNS=	0
+WARNS?=	0
 LDADD		= -lalias
 DPADD		= ${LIBALIAS}
 MAN		= natd.8
diff --git a/sbin/newfs_msdos/Makefile b/sbin/newfs_msdos/Makefile
index 9d5af35a3ca89..1c52095ce0db6 100644
--- a/sbin/newfs_msdos/Makefile
+++ b/sbin/newfs_msdos/Makefile
@@ -3,6 +3,6 @@
 PROG=	newfs_msdos
 MAN=	newfs_msdos.8
 
-WARNS=	0
+WARNS?=	0
 
 .include <bsd.prog.mk>
diff --git a/sbin/nos-tun/Makefile b/sbin/nos-tun/Makefile
index baae98ebb108b..e128b62160f77 100644
--- a/sbin/nos-tun/Makefile
+++ b/sbin/nos-tun/Makefile
@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 PROG=	nos-tun
-WARNS=	0
+WARNS?=	0
 MAN=	nos-tun.8
 
 .include <bsd.prog.mk>
diff --git a/sbin/ping/Makefile b/sbin/ping/Makefile
index 740567fb74f91..24882d3d7d6dd 100644
--- a/sbin/ping/Makefile
+++ b/sbin/ping/Makefile
@@ -8,7 +8,7 @@ BINMODE=4555
 .if ${MACHINE_ARCH} == "alpha"
 CFLAGS+=-fno-builtin	# GCC's builtin memcpy doesn't do unaligned copies
 .endif
-WARNS=	2
+WARNS?=	2
 DPADD=	${LIBM}
 LDADD=	-lm
 
diff --git a/sbin/ping6/Makefile b/sbin/ping6/Makefile
index 4073a56debffe..4e6da277922d1 100644
--- a/sbin/ping6/Makefile
+++ b/sbin/ping6/Makefile
@@ -5,7 +5,7 @@ MAN=	ping6.8
 
 CFLAGS+=-DINET6 -DIPSEC -DKAME_SCOPEID -DUSE_RFC2292BIS \
 	-DHAVE_POLL_H -DHAVE_ARC4RANDOM
-WARNS=	0
+WARNS?=	0
 
 BINOWN=	root
 BINMODE=4555
diff --git a/sbin/quotacheck/Makefile b/sbin/quotacheck/Makefile
index d909e1abecd18..b54eda3128801 100644
--- a/sbin/quotacheck/Makefile
+++ b/sbin/quotacheck/Makefile
@@ -3,7 +3,7 @@
 
 PROG=	quotacheck
 SRCS=	quotacheck.c preen.c utilities.c
-WARNS=	2
+WARNS?=	2
 MAN=	quotacheck.8
 
 .PATH:	${.CURDIR}/../fsck_ffs
diff --git a/sbin/rcorder/Makefile b/sbin/rcorder/Makefile
index 9cdac626b6786..3f34be55206f8 100644
--- a/sbin/rcorder/Makefile
+++ b/sbin/rcorder/Makefile
@@ -8,7 +8,7 @@ MAN=	rcorder.8
 LDADD=	-lutil
 DPADD=	${LIBUTIL}
 
-WARNS=	0
+WARNS?=	0
 # XXX hack for make's hash.[ch]
 CFLAGS+= -DORDER -I.
 
diff --git a/sbin/restore/Makefile b/sbin/restore/Makefile
index 5571947d8960d..c06a3db9116c7 100644
--- a/sbin/restore/Makefile
+++ b/sbin/restore/Makefile
@@ -6,7 +6,7 @@
 PROG=	restore
 LINKS=	${BINDIR}/restore ${BINDIR}/rrestore
 CFLAGS+=-DRRESTORE
-WARNS=	0
+WARNS?=	0
 SRCS=	main.c interactive.c restore.c dirs.c symtab.c tape.c utilities.c \
 	dumprmt.c
 MAN=	restore.8
diff --git a/sbin/route/Makefile b/sbin/route/Makefile
index 7e3dd09bb7607..fede01d4dcc4f 100644
--- a/sbin/route/Makefile
+++ b/sbin/route/Makefile
@@ -6,7 +6,7 @@ MAN=	route.8
 SRCS=	route.c keywords.h
 CFLAGS+=-I. -Wall -DNS
 CFLAGS+=-DINET6
-WARNS=	0
+WARNS?=	0
 CLEANFILES+=keywords.h _keywords.tmp
 
 keywords.h: keywords
diff --git a/sbin/routed/Makefile b/sbin/routed/Makefile
index 34c8e555b1ca8..3d25171f53ec2 100644
--- a/sbin/routed/Makefile
+++ b/sbin/routed/Makefile
@@ -8,6 +8,6 @@ SUBDIR= rtquery
 LDADD=	-lmd
 DPADD=	${LIBMD}
 #COPTS= -g -DDEBUG -W -Wall -Wcast-align -Wcast-qual -Winline -Wpointer-arith -Wnested-externs -Wwrite-strings -Wunused
-WARNS=	0
+WARNS?=	0
 
 .include <bsd.prog.mk>
diff --git a/sbin/routed/rtquery/Makefile b/sbin/routed/rtquery/Makefile
index 1b553a3f766fb..e2701da2a6098 100644
--- a/sbin/routed/rtquery/Makefile
+++ b/sbin/routed/rtquery/Makefile
@@ -7,6 +7,6 @@ MAN=	rtquery.8
 LDADD=	-lmd
 DPADD=	${LIBMD}
 #COPTS=	-g -DDEBUG -W -Wall -Wcast-align -Wcast-qual -Winline -Wpointer-arith -Wnested-externs -Wwrite-strings -Wunused
-WARNS=	0
+WARNS?=	0
 
 .include <bsd.prog.mk>
diff --git a/sbin/rtsol/Makefile b/sbin/rtsol/Makefile
index c68ef2dafd619..0bdbdaa0ba67c 100644
--- a/sbin/rtsol/Makefile
+++ b/sbin/rtsol/Makefile
@@ -19,7 +19,7 @@ PROG=	rtsol
 SRCS=	rtsold.c rtsol.c if.c probe.c rtsock.c
 
 CFLAGS+=-DINET6 -DHAVE_ARC4RANDOM -DHAVE_POLL_H -DSMALL
-WARNS=	0
+WARNS?=	0
 
 NOMAN=	yes
 
diff --git a/sbin/savecore/Makefile b/sbin/savecore/Makefile
index 31b46ac84797e..6d7b5e0362d12 100644
--- a/sbin/savecore/Makefile
+++ b/sbin/savecore/Makefile
@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 PROG=	savecore
-WARNS=	4
+WARNS?=	4
 DPADD=	${LIBZ}
 LDADD=	-lz
 MAN=	savecore.8
diff --git a/sbin/slattach/Makefile b/sbin/slattach/Makefile
index 3060c747b7ba0..84b0c1282865f 100644
--- a/sbin/slattach/Makefile
+++ b/sbin/slattach/Makefile
@@ -3,7 +3,7 @@
 # $FreeBSD$
 
 PROG=	slattach
-WARNS=	0
+WARNS?=	0
 MAN=	slattach.8
 MLINKS=	slattach.8 slip.8
 LDADD=	-lutil
diff --git a/sbin/startslip/Makefile b/sbin/startslip/Makefile
index 5ac6581b20aa5..907cf6dc90f4b 100644
--- a/sbin/startslip/Makefile
+++ b/sbin/startslip/Makefile
@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PROG=	startslip
-WARNS=	0
+WARNS?=	0
 DPADD=	${LIBUTIL}
 LDADD=	-lutil
 
diff --git a/sbin/sysctl/Makefile b/sbin/sysctl/Makefile
index 58f3e9bc81296..381f19918be3d 100644
--- a/sbin/sysctl/Makefile
+++ b/sbin/sysctl/Makefile
@@ -2,7 +2,7 @@
 # $FreeBSD$
 
 PROG=	sysctl
-WARNS=	0
+WARNS?=	0
 MAN=	sysctl.8
 
 .include <bsd.prog.mk>
diff --git a/sbin/umount/Makefile b/sbin/umount/Makefile
index 51bcbad2f92f7..70ccc5a066247 100644
--- a/sbin/umount/Makefile
+++ b/sbin/umount/Makefile
@@ -4,7 +4,7 @@
 
 PROG=	umount
 SRCS=	umount.c vfslist.c mounttab.c
-WARNS=	0
+WARNS?=	0
 MAN=	umount.8
 
 MOUNT=	${.CURDIR}/../mount
diff --git a/sbin/vinum/Makefile b/sbin/vinum/Makefile
index a51ed5d348d6d..ce1bcaaf9ad93 100644
--- a/sbin/vinum/Makefile
+++ b/sbin/vinum/Makefile
@@ -5,7 +5,7 @@ SRCS=	v.c list.c vinumparser.c vinumutil.c vext.h commands.c
 MAN=	vinum.8
 
 CFLAGS+=	-I${.CURDIR}/../../sys
-WARNS=	0
+WARNS?=	0
 
 DPADD=	${LIBREADLINE} ${LIBTERMCAP} ${LIBDEVSTAT} ${LIBKVM}
 LDADD=	-lreadline -ltermcap -ldevstat -lkvm
diff --git a/secure/usr.bin/bdes/Makefile b/secure/usr.bin/bdes/Makefile
index db4453319eb34..306fc2cfe0540 100644
--- a/secure/usr.bin/bdes/Makefile
+++ b/secure/usr.bin/bdes/Makefile
@@ -3,7 +3,7 @@
 
 PROG=	bdes
 
-WARNS=	2
+WARNS?=	2
 
 DPADD=	${LIBCRYPTO}
 LDADD=	-lcrypto
diff --git a/usr.bin/xlint/Makefile.inc b/usr.bin/xlint/Makefile.inc
index 59128aa20c1ab..0c1b97a5cdfa3 100644
--- a/usr.bin/xlint/Makefile.inc
+++ b/usr.bin/xlint/Makefile.inc
@@ -1,7 +1,7 @@
 #	$NetBSD: Makefile.inc,v 1.8 2002/02/04 00:18:32 thorpej Exp $
 # $FreeBSD$
 
-WARNS=		0
+WARNS?=		0
 
 .PATH:		${.CURDIR}/../common
 
diff --git a/usr.sbin/mount_nwfs/Makefile b/usr.sbin/mount_nwfs/Makefile
index c66708864246d..8fbb9a8c3ba47 100644
--- a/usr.sbin/mount_nwfs/Makefile
+++ b/usr.sbin/mount_nwfs/Makefile
@@ -6,7 +6,7 @@ MAN=	mount_nwfs.8
 
 MOUNT=	${.CURDIR}/../../sbin/mount
 CFLAGS+= -DNWFS -I${MOUNT}
-WARNS=	0
+WARNS?=	0
 
 .PATH:	${MOUNT}
 
diff --git a/usr.sbin/mount_portalfs/Makefile b/usr.sbin/mount_portalfs/Makefile
index 65473c1c5033f..56667f1653dc0 100644
--- a/usr.sbin/mount_portalfs/Makefile
+++ b/usr.sbin/mount_portalfs/Makefile
@@ -8,7 +8,7 @@ MAN=	mount_portalfs.8
 
 MOUNT=	${.CURDIR}/../../sbin/mount
 CFLAGS+=-I${MOUNT}
-WARNS=	0
+WARNS?=	0
 
 .PATH:	${MOUNT}
 
diff --git a/usr.sbin/ndiscvt/Makefile b/usr.sbin/ndiscvt/Makefile
index f5c7f13913b3c..c59581826fe99 100644
--- a/usr.sbin/ndiscvt/Makefile
+++ b/usr.sbin/ndiscvt/Makefile
@@ -9,7 +9,7 @@ SRCS+=	inf.c inf-token.l inf-parse.y y.tab.h
 
 MAN8=	ndiscvt.8
 
-WARNS=	4
+WARNS?=	4
 
 DPADD=  ${LIBL}
 LDADD=  -ll
diff --git a/usr.sbin/nghook/Makefile b/usr.sbin/nghook/Makefile
index 8b2644afb47f7..73f2df3bf935d 100644
--- a/usr.sbin/nghook/Makefile
+++ b/usr.sbin/nghook/Makefile
@@ -4,7 +4,7 @@
 PROG=	nghook
 MAN=	nghook.8
 SRCS=	main.c
-WARNS=	6
+WARNS?=	6
 
 DPADD=	${LIBNETGRAPH}
 LDADD=	-lnetgraph
diff --git a/usr.sbin/watchdogd/Makefile b/usr.sbin/watchdogd/Makefile
index e7c5674e96ddb..de6f976c157ea 100644
--- a/usr.sbin/watchdogd/Makefile
+++ b/usr.sbin/watchdogd/Makefile
@@ -2,6 +2,6 @@
 
 PROG=	watchdogd
 MAN=	watchdogd.8
-WARNS=	6
+WARNS?=	6
 
 .include <bsd.prog.mk>