3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero

@@ -18,10 +18,11 @@
 #
 # CDDL HEADER END
 #
 #
 # Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2012 by Delphix. All rights reserved.
 #
 
 LIBRARY= libzpool.a
 VERS= .1
 

@@ -57,11 +58,11 @@
 C99LMODE=       -Xc99=%all
 
 CFLAGS +=       -g $(CCVERBOSE) $(CNOGLOBAL)
 CFLAGS64 +=     -g $(CCVERBOSE) $(CNOGLOBAL)
 LDLIBS +=       -lcmdutils -lumem -lavl -lnvpair -lz -lc -lsysevent -lmd
-CPPFLAGS +=     $(INCS)
+CPPFLAGS +=     $(INCS) -DDEBUG
 
 .KEEP_STATE:
 
 all: $(LIBS)