8411 Build should warn when linking against libraries outside proto area

*** 25,34 ****
--- 25,35 ----
  # Copyright 2014 Garrett D'Amore <garrett@damore.org>
  # Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved.
  # Copyright 2015 Gary Mills
  # Copyright 2015 Igor Kozhukhov <ikozhukhov@gmail.com>
  # Copyright 2016 Toomas Soome <tsoome@me.com>
+ # Copyright 2017 RackTop Systems.
  #
  
  #
  # Makefile.master, global definitions for system source
  #
*** 97,106 ****
--- 98,113 ----
  
  __SUNC=                 $(POUND_SIGN)
  $(__SUNC)__GNUC=        $(POUND_SIGN)
  __GNUC64=               $(__GNUC)
  
+ # If ADJUNCT_PROTO was set we set ADJUNCT_PROTO_NOT_SET to POUND_SIGN so
+ # we can use it to turn off the -zassert-deflib exceptions that allow
+ # linking against host libraries.
+ ADJUNCT_PROTO_NOT_SET=          $(ADJUNCT_PROTO:%=$(POUND_SIGN))
+ $(ADJUNCT_PROTO_NOT_SET)ADJUNCT_PROTO_SET=      $(POUND_SIGN)
+ 
  # Allow build-time "configuration" to enable or disable some things.
  # The default is POUND_SIGN, meaning "not enabled". If the environment
  # passes in an override like ENABLE_SMB_PRINTING= (empty) that will
  # uncomment things in the lower Makefiles to enable the feature.
  ENABLE_SMB_PRINTING=    $(POUND_SIGN)
*** 670,684 ****
  
  #
  # LDLIBS32 and LDLIBS64 can be set in the environment to override the following
  # assignments.
  #
- # These environment settings make sure that no libraries are searched outside
- # of the local workspace proto area:
- #       LDLIBS32=-YP,$ROOT/lib:$ROOT/usr/lib
- #       LDLIBS64=-YP,$ROOT/lib/$MACH64:$ROOT/usr/lib/$MACH64
- #
  LDLIBS32 =      $(ENVLDLIBS1) $(ENVLDLIBS2) $(ENVLDLIBS3)
  LDLIBS32 +=     $(ADJUNCT_PROTO:%=-L%/usr/lib -L%/lib)
  LDLIBS.cmd =    $(LDLIBS32)
  LDLIBS.lib =    $(LDLIBS32)
  
--- 677,686 ----
*** 686,695 ****
--- 688,703 ----
                  $(ENVLDLIBS2:%=%/$(MACH64)) \
                  $(ENVLDLIBS3:%=%/$(MACH64))
  LDLIBS64 +=     $(ADJUNCT_PROTO:%=-L%/usr/lib/$(MACH64) -L%/lib/$(MACH64))
  
  #
+ # Defines to be used when overriding the default search path with -YP.
+ #
+ DEFLDPATH =     /lib:/usr/lib
+ DEFLDPATH64 =   /lib/64:/usr/lib/64
+ 
+ #
  # Define compilation macros.
  #
  COMPILE.c=      $(CC) $(CFLAGS) $(CPPFLAGS) -c
  COMPILE64.c=    $(CC) $(CFLAGS64) $(CPPFLAGS) -c
  COMPILE.cc=     $(CCC) $(CCFLAGS) $(CPPFLAGS) -c
*** 871,880 ****
--- 879,889 ----
  ZNOVERSION=     -znoversion
  ZRECORD=        -zrecord
  ZREDLOCSYM=     -zredlocsym
  ZTEXT=          -ztext
  ZVERBOSE=       -zverbose
+ ZASSERTDEFLIB=  -zassert-deflib
  
  GSHARED=        -G
  CCMT=           -mt
  
  # Handle different PIC models on different ISAs