10080 smatch Makefile changes for usr/src/cmd

*** 20,29 ****
--- 20,30 ----
  #
  #
  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
+ # Copyright (c) 2018, Joyent, Inc.
  
  include         ../Makefile.sp
  
  ROOTLIBLPBIN =  $(ROOTLIBLP)/bin
  
*** 32,43 ****
  OBJECTS =       $(PROG).o
  
  ROOTPROG=       $(PROG:%=$(ROOTLIBLPBIN)/%)
  $(ROOTPROG)     := FILEMODE=555
  
- CERRWARN +=     -_gcc=-Wno-implicit-function-declaration
- 
  .KEEP_STATE:
  
  all:            $(PROG)
  
  $(ROOTLIBLPBIN):
--- 33,42 ----