I think this option should be available.
Index: Makefile
===================================================================
RCS file: /cvs/src/lib/libsqlite3/Makefile,v
retrieving revision 1.8
diff -u -p -r1.8 Makefile
--- Makefile 22 Jun 2012 17:52:34 -0000 1.8
+++ Makefile 24 Jul 2012 11:42:51 -0000
@@ -40,6 +40,7 @@ SRCS += pthread_stub.c
FEATURE_FLAGS = -DSQLITE_ENABLE_COLUMN_METADATA \
-DSQLITE_ENABLE_RTREE \
-DSQLITE_ENABLE_UNLOCK_NOTIFY \
+ -DSQLITE_SECURE_DELETE \
-DSQLITE_ENABLE_FTS3
CPPFLAGS += $(FEATURE_FLAGS) -DSQLITE_THREADSAFE=1 \
