diff --git crash-7.3.0/Makefile crash-7.3.0/Makefile
index 745541012f43..d0574d8f07d3 100644
--- crash-7.3.0/Makefile
+++ crash-7.3.0/Makefile
@@ -228,7 +228,7 @@ all: make_configure
 gdb_merge: force
 	@if [ ! -f ${GDB}/README ]; then \
 	  make --no-print-directory gdb_unzip; fi
-	@echo "${LDFLAGS} -lz -ldl -rdynamic" > ${GDB}/gdb/mergelibs
+	@echo "${LDFLAGS} -lz -llzo2 -lsnappy -ldl -rdynamic" > ${GDB}/gdb/mergelibs
 	@echo "../../${PROGRAM} ../../${PROGRAM}lib.a" > ${GDB}/gdb/mergeobj
 	@rm -f ${PROGRAM}
 	@if [ ! -f ${GDB}/config.status ]; then \
diff --git crash-7.3.0/diskdump.c crash-7.3.0/diskdump.c
index e88243e616cc..9ccf7039231b 100644
--- crash-7.3.0/diskdump.c
+++ crash-7.3.0/diskdump.c
@@ -23,6 +23,8 @@
  * GNU General Public License for more details.
  */
 
+#define LZO
+#define SNAPPY
 #include "defs.h"
 #include "diskdump.h"
 #include "xen_dom0.h"