diff --git a/bin/rmail/Makefile b/bin/rmail/Makefile
--- a/bin/rmail/Makefile
+++ b/bin/rmail/Makefile
@@ -34,3 +34,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.prog.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/lib/libsm/Makefile b/lib/libsm/Makefile
--- a/lib/libsm/Makefile
+++ b/lib/libsm/Makefile
@@ -42,3 +42,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.lib.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/lib/libsmdb/Makefile b/lib/libsmdb/Makefile
--- a/lib/libsmdb/Makefile
+++ b/lib/libsmdb/Makefile
@@ -24,3 +24,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.lib.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/lib/libsmutil/Makefile b/lib/libsmutil/Makefile
--- a/lib/libsmutil/Makefile
+++ b/lib/libsmutil/Makefile
@@ -31,3 +31,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.lib.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/libexec/mail.local/Makefile b/libexec/mail.local/Makefile
--- a/libexec/mail.local/Makefile
+++ b/libexec/mail.local/Makefile
@@ -28,3 +28,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.prog.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/libexec/smrsh/Makefile b/libexec/smrsh/Makefile
--- a/libexec/smrsh/Makefile
+++ b/libexec/smrsh/Makefile
@@ -27,3 +27,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.prog.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/usr.bin/vacation/Makefile b/usr.bin/vacation/Makefile
--- a/usr.bin/vacation/Makefile
+++ b/usr.bin/vacation/Makefile
@@ -26,3 +26,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.prog.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/usr.sbin/editmap/Makefile b/usr.sbin/editmap/Makefile
--- a/usr.sbin/editmap/Makefile
+++ b/usr.sbin/editmap/Makefile
@@ -27,3 +27,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.prog.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/usr.sbin/mailstats/Makefile b/usr.sbin/mailstats/Makefile
--- a/usr.sbin/mailstats/Makefile
+++ b/usr.sbin/mailstats/Makefile
@@ -28,3 +28,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.prog.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/usr.sbin/makemap/Makefile b/usr.sbin/makemap/Makefile
--- a/usr.sbin/makemap/Makefile
+++ b/usr.sbin/makemap/Makefile
@@ -28,3 +28,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.prog.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}
diff --git a/usr.sbin/praliases/Makefile b/usr.sbin/praliases/Makefile
--- a/usr.sbin/praliases/Makefile
+++ b/usr.sbin/praliases/Makefile
@@ -28,3 +28,5 @@
 	ln -sf ${.ALLSRC} ${.TARGET}
 
 .include <bsd.prog.mk>
+
+CWARNFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}