Threading abstraction layer added
diff --git a/library/Makefile b/library/Makefile
index 003b933..4c37adf 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -54,7 +54,8 @@
 		rsa.o		sha1.o		sha256.o		\
 		sha512.o	ssl_cache.o	ssl_cli.o		\
 		ssl_srv.o   ssl_ciphersuites.o			\
-		ssl_tls.o	timing.o	version.o		\
+		ssl_tls.o	threading.o	timing.o		\
+		version.o								\
 		x509.o		x509_create.o				\
 		x509_crl.o	x509_crt.o	x509_csr.o		\
 		x509write_crt.o			x509write_csr.o	\