style.Makefile(5):

	Use WARNS?= instead of WARNS=.

49 files changed, 49 insertions, 49 deletions

diff --git a/sbin/atm/atmconfig/Makefile b/sbin/atm/atmconfig/Makefile
index 1146737..ddbee80 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 d6b8060..090d208 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 12fced5..2134cd5 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 8f0d8e9..4289dc8 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 eeb3446..d214888 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 0e9ea69..5b7474f 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 715afe4..fd539b9 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 948ee92..7e2da62 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 a680986..659687b 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 6592157..cd45007 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 ceb660a..252f8b6 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 75ec72d..ce2e618 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 8100032..dc91fd1 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 7318948..1964def 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 f067de2..9639352 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 43da14b..80fff2b 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} ${LIBKVM}
 LDADD=	-lncurses -lkvm
diff --git a/sbin/ipmon/Makefile b/sbin/ipmon/Makefile
index e4a9da5..f1c006d 100644
--- a/sbin/ipmon/Makefile
+++ b/sbin/ipmon/Makefile
@@ -9,7 +9,7 @@ SRCS=	ipmon.c
 CFLAGS+=-DUSE_INET6 -DIPL_NAME=\"/dev/ipl\" -DLOGFAC=LOG_SECURITY
 CFLAGS+=-I${.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 81c407b..6cb9d4a 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 776fef4..f2a2e51 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 89a29e7..0aeed64 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 c83c6bc..d28d3a5 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 0841157..80af58a 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 12b30c4..0843774 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 0d37514..68fe70a 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 c418b72..881d119 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 5a30110..8a3e75e0 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 7139b3f..9a6be28 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 2b8d62b..110a525 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 bd9163c..3096c8e 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 bb19eae..0f5891f 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 dbe870f..0296504 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 2dcf9c6..c6bf326 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 9d5af35..1c52095 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 baae98e..e128b62 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 740567f..24882d3 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 4073a56..4e6da27 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 d909e1a..b54eda3 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 9cdac62..3f34be5 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 5571947..c06a3db 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 7e3dd09..fede01d 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 34c8e55..3d25171 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 1b553a3..e2701da 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 c68ef2da..0bdbdaa 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 31b46ac..6d7b5e0 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 3060c74..84b0c12 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 5ac6581..907cf6d 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 58f3e9b..381f199 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 51bcbad..70ccc5a 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 a51ed5d..ce1bcaa 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