--- ltt-usertrace-0.33/Makefile	2012-03-25 15:05:54.873736407 -0400
+++ ltt-usertrace-0.33/Makefile	2012-03-25 15:05:35.669293324 -0400
@@ -27,7 +27,7 @@
 	$(CC) $(LTT_CFLAGS) $(CFLAGS) -lltt-loader-user_generic -o $@ $^
 
 sample-highspeed: sample-highspeed.c
-	$(CC) $(LTT_CFLAGS) $(CFLAGS) -lltt-usertrace-fast -lltt-loader-user_generic -lrt -o $@ $^
+	$(CC) $(LTT_CFLAGS) $(CFLAGS) -lpthread -lltt-usertrace-fast -lltt-loader-user_generic -lrt -o $@ $^
 
 sample-printf: sample-printf.c
 	$(CC) $(LTT_CFLAGS) $(CFLAGS) -lltt-loader-user_generic -o $@ $^