diff -up ./src/torrent/utils/Makefile.am.orig ./src/torrent/utils/Makefile.am
--- ./src/torrent/utils/Makefile.am.orig	2014-06-21 10:03:08.849334059 +0300
+++ ./src/torrent/utils/Makefile.am	2014-06-21 10:03:41.182057747 +0300
@@ -20,6 +20,10 @@ libsub_torrentutils_la_SOURCES = \
 	thread_interrupt.cc \
 	thread_interrupt.h
 
+libsub_torrentutils_la_LIBADD = \
+	-lz \
+	-lpthread
+
 AM_CPPFLAGS = -I$(srcdir) -I$(srcdir)/.. -I$(srcdir)/../.. -I$(top_srcdir)
 
 libtorrentincludedir = $(includedir)/torrent/utils