--- src/humperdink/Makefile.orig	2009-02-16 18:32:56.000000000 +0000
+++ src/humperdink/Makefile	2009-02-16 18:33:04.000000000 +0000
@@ -8,7 +8,7 @@
 
 CFLAGS += -I.. $(RDYNAMIC)
 
-LDFLAGS += -L../valerie -L../framework -lvalerie -lmlt
+LDFLAGS += -L../valerie -L../framework -lvalerie -lmlt -lpthread
 
 SRCS := $(OBJS:.o=.c)
 
