Remove `#include <mruby/khash.h>` from `mruby/hash.h`.
MODIFY
include/mruby/hash.h
include/mruby/hash.h
#define MRUBY_HASH_H
#include "common.h"
-#include <mruby/khash.h>
/**
* Hash class
@@ -198,15 +197,13 @@ MRB_API mrb_value mrb_hash_dup(mrb_state *mrb, mrb_value hash);
*/
MRB_API void mrb_hash_merge(mrb_state *mrb, mrb_value hash1, mrb_value hash2);
-/* declaration of struct kh_ht */
+/* declaration of struct mrb_hash_value */
/* be careful when you touch the internal */
typedef struct {
mrb_value v;
mrb_int n;
} mrb_hash_value;
-KHASH_DECLARE(ht, mrb_value, mrb_hash_value, TRUE)
-
/* RHASH_TBL allocates st_table if not available. */
#define RHASH(obj) ((struct RHash*)(mrb_ptr(obj)))
#define RHASH_TBL(h) (RHASH(h)->ht)

Remove `#include <mruby/khash.h>` from `mruby/hash.h`.