diff -ur a/lib/hash.h b/lib/hash.h
--- a/lib/hash.h	2023-01-04 23:06:45.000000000 +0100
+++ b/lib/hash.h	2023-01-17 13:04:05.200398680 +0100
@@ -24,6 +24,11 @@
 #ifndef HASH_H_
 # define HASH_H_
 
+#define hash_lookup recode_hash_lookup
+#define hash_delete recode_hash_delete
+#define hash_free   recode_hash_free
+#define hash_insert recode_hash_insert
+
 # include <stdio.h>
 
 # ifdef __cplusplus