8411 Build should warn when linking against libraries outside proto area

@@ -20,10 +20,12 @@
 #
 #
 # Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 # Use is subject to license terms.
 #
+# Copyright 2017 RackTop Systems.
+#
 
 LIBRARY=        libbrand.a
 VERS=           .1
 
 OBJECTS=        libbrand.o

@@ -34,10 +36,13 @@
 LDLIBS +=       -lc
 $(LINTLIB) := SRCS=     $(SRCDIR)/$(LINTSRC)
 CPPFLAGS +=     -I$(ADJUNCT_PROTO)/usr/include/libxml2 -I$(SRCDIR) -D_REENTRANT
 $(DYNLIB) :=    LDLIBS += -lxml2
 
+# Allow libxml2 to be taken from outside the proto area.
+$(ADJUNCT_PROTO_NOT_SET)DYNFLAGS += $(ZASSERTDEFLIB)=libxml2.so
+
 SRCDIR=         ../common
 
 .KEEP_STATE:
 
 all:    $(LIBS)