9852 enable ld(1) guidance and deflib assertions for the illumos build

@@ -58,10 +58,23 @@
 $(NIS2LDAPPROG) := LDLIBS += -lc -lnsl -lnisdb
 stdethers :=    LDLIBS += -lsocket
 makedbm :=      MAPFILES = $(MAPFILE.INT) $(MAPFILE.NGB)
 makedbm :=      LDFLAGS += $(MAPFILES:%=-M%)
 
+# These things link with libnisdb, and thus are 'C++', but are otherwise
+# entirely C.  A result of this is they probably don't _actually_ use the C++
+# runtime, but may in future (depending on compiler implementation)
+#
+# Give up.
+ypxfr :=        ZGUIDANCE= -zguidance=nounused
+ypxfrd :=       ZGUIDANCE= -zguidance=nounused
+ypserv :=       ZGUIDANCE= -zguidance=nounused
+
+$(__SUNC)ypxfr :=       ADJUNCT_LIBS = libC.so
+$(__SUNC)ypxfrd :=      ADJUNCT_LIBS = libC.so
+$(__SUNC)ypserv :=      ADJUNCT_LIBS = libC.so
+
 $(ROOTVAR_YP)/aliases :=        FILEMODE=555
 
 YPFILES = Makefile aliases nicknames updaters
 ETCFILES =  publickey
 ROOTYPFILES= $(YPFILES:%=$(ROOTVAR_YP)/%)