--- a/Makefile.am~
+++ b/Makefile.am
@@ -33,7 +33,7 @@ libdvdread_la_SOURCES = \
 	src/nav_print.c \
 	src/nav_read.c
 
-libdvdread_la_LIBADD = $(CSS_LIBS)
+libdvdread_la_LIBADD = $(CSS_LIBS) -ldl
 
 libdvdread_la_LDFLAGS = -version-info $(DVDREAD_LTVERSION) \
 	-export-symbols-regex "(^dvdread.*|^nav.*|^ifo.*|^DVD.*|^UDF.*)"