10080 smatch Makefile changes for usr/src/cmd

@@ -20,10 +20,11 @@
 # CDDL HEADER END
 #
 #
 # Copyright (c) 1989 by Sun Microsystems, Inc.
 #
+# Copyright (c) 2018, Joyent, Inc.
 
 FSTYPE=         hsfs
 LIBPROG=        labelit
 ATTMK=          $(LIBPROG)
 

@@ -31,8 +32,11 @@
 
 CERRWARN += -_gcc=-Wno-switch
 CERRWARN += -_gcc=-Wno-implicit-function-declaration
 CERRWARN += -_gcc=-Wno-unused-variable
 
+# not linted
+SMATCH=off
+
 lint := PROG = $(LIBPROG)
 
 lint:   lint_PROG