Include json_object_iterator.c in the list of sources.
diff --git a/Makefile.am b/Makefile.am
index 09221a3..9353b7a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -49,6 +49,7 @@
 	arraylist.c \
 	debug.c \
 	json_object.c \
+	json_object_iterator.c \
 	json_tokener.c \
 	json_util.c \
 	linkhash.c \