--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/cext/util.h	Sun May 21 13:35:19 2017 +0900
@@ -0,0 +1,76 @@
+/*
+ util.h - utility functions for interfacing with the various python APIs.
+
+ This software may be used and distributed according to the terms of
+ the GNU General Public License, incorporated herein by reference.
+*/
+
+#ifndef _HG_UTIL_H_
+#define _HG_UTIL_H_
+
+#include "compat.h"
+
+#if PY_MAJOR_VERSION >= 3
+#define IS_PY3K
+#endif
+
+typedef struct {
+	PyObject_HEAD
+	char state;
+	int mode;
+	int size;
+	int mtime;
+} dirstateTupleObject;
+
+extern PyTypeObject dirstateTupleType;
+#define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType)
+
+/* This should be kept in sync with normcasespecs in encoding.py. */
+enum normcase_spec {
+	NORMCASE_LOWER = -1,
+	NORMCASE_UPPER = 1,
+	NORMCASE_OTHER = 0
+};
+
+#define MIN(a, b) (((a)<(b))?(a):(b))
+/* VC9 doesn't include bool and lacks stdbool.h based on my searching */
+#if defined(_MSC_VER) || __STDC_VERSION__ < 199901L
+#define true 1
+#define false 0
+typedef unsigned char bool;
+#else
+#include <stdbool.h>
+#endif
+
+static int8_t hextable[256] = {
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1, /* 0-9 */
+	-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* A-F */
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* a-f */
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+};
+
+static inline int hexdigit(const char *p, Py_ssize_t off)
+{
+	int8_t val = hextable[(unsigned char)p[off]];
+
+	if (val >= 0) {
+		return val;
+	}
+
+	PyErr_SetString(PyExc_ValueError, "input contains non-hex character");
+	return 0;
+}
+
+#endif /* _HG_UTIL_H_ */

--- a/mercurial/util.h	Sun May 21 13:31:27 2017 +0900
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,76 +0,0 @@
-/*
- util.h - utility functions for interfacing with the various python APIs.
-
- This software may be used and distributed according to the terms of
- the GNU General Public License, incorporated herein by reference.
-*/
-
-#ifndef _HG_UTIL_H_
-#define _HG_UTIL_H_
-
-#include "compat.h"
-
-#if PY_MAJOR_VERSION >= 3
-#define IS_PY3K
-#endif
-
-typedef struct {
-	PyObject_HEAD
-	char state;
-	int mode;
-	int size;
-	int mtime;
-} dirstateTupleObject;
-
-extern PyTypeObject dirstateTupleType;
-#define dirstate_tuple_check(op) (Py_TYPE(op) == &dirstateTupleType)
-
-/* This should be kept in sync with normcasespecs in encoding.py. */
-enum normcase_spec {
-	NORMCASE_LOWER = -1,
-	NORMCASE_UPPER = 1,
-	NORMCASE_OTHER = 0
-};
-
-#define MIN(a, b) (((a)<(b))?(a):(b))
-/* VC9 doesn't include bool and lacks stdbool.h based on my searching */
-#if defined(_MSC_VER) || __STDC_VERSION__ < 199901L
-#define true 1
-#define false 0
-typedef unsigned char bool;
-#else
-#include <stdbool.h>
-#endif
-
-static int8_t hextable[256] = {
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1, /* 0-9 */
-	-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* A-F */
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* a-f */
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
-};
-
-static inline int hexdigit(const char *p, Py_ssize_t off)
-{
-	int8_t val = hextable[(unsigned char)p[off]];
-
-	if (val >= 0) {
-		return val;
-	}
-
-	PyErr_SetString(PyExc_ValueError, "input contains non-hex character");
-	return 0;
-}
-
-#endif /* _HG_UTIL_H_ */

--- a/setup.py	Sun May 21 13:31:27 2017 +0900
+++ b/setup.py	Sun May 21 13:35:19 2017 +0900
@@ -591,7 +591,7 @@
 
 common_depends = ['mercurial/bitmanipulation.h',
                   'mercurial/compat.h',
-                  'mercurial/util.h']
+                  'mercurial/cext/util.h']
 common_include_dirs = ['mercurial']
 
 osutil_cflags = []