8512 libstand won't build with GCC 7.1

*** 9,18 ****
--- 9,19 ----
  # http://www.illumos.org/license/CDDL.
  #
  
  #
  # Copyright 2016 Toomas Soome <tsoome@me.com>
+ # Copyright 2017 RackTop Systems.
  #
  
  #
  # Notes:
  # - We don't use the libc strerror/sys_errlist because the string table is
*** 31,40 ****
--- 32,46 ----
  OBJS=   __main.o assert.o bcd.o environment.o \
          getopt.o gets.o globals.o pager.o printf.o \
          strdup.o strerror.o strtol.o strtoul.o random.o \
          sbrk.o twiddle.o zalloc.o zalloc_malloc.o
  
+ # builtins provided by compiler-rt
+ SRCS += $(LIB_BASE)/builtins/divmoddi4.c
+ SRCS += $(LIB_BASE)/builtins/udivmoddi4.c
+ OBJS += divmoddi4.o udivmoddi4.o
+ 
  # private (pruned) versions of libc string functions
  SRCS += $(LIBSTAND_SRC)/strcasecmp.c
  OBJS += strcasecmp.o
  
  # from libc