--- Makefile.orig	2002-07-12 23:52:38.000000000 +0800
+++ Makefile	2014-05-25 09:07:15.459801218 +0800
@@ -3,7 +3,7 @@
 
 SQLBF_OBJS = bf.o crypto.o sqlbf.o
 CFLAGS = -Iinclude
-LDFLAGS = -lssl -lm -lpthread 
+LDFLAGS += -lssl -lm -lpthread -lcrypto
 
 all: SQLBF