--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2011-07-22  Paul Eggert  <eggert@cs.ucla.edu>
 
+	large-inode: New module
+	* MODULES.html.sh: Add it.
+	* modules/large-inode, m4/large-inode.m4: New files.
+
 	extensions: Enable extensions on MacOS X 10.5 and later.
 	* m4/extensions.m4 (AC_USE_SYSTEM_EXTENSIONS): Define _DARWIN_C_SOURCE.
 

--- a/MODULES.html.sh
+++ b/MODULES.html.sh
@@ -2656,6 +2656,7 @@
   func_module file-set
   func_module hash-triple
   func_module i-ring
+  func_module large-inode
   func_module same-inode
   func_end_table
 

new file mode 100644
--- /dev/null
+++ b/m4/large-inode.m4
@@ -0,0 +1,24 @@
+# Enable large inode numbers on systems normally without them. -*- Autoconf -*-
+
+# Copyright (C) 2011 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# written by Paul Eggert
+
+AC_DEFUN([gl_SYS_LARGE_INODE],
+[
+  dnl Many systems enable large inodes if you enable large offsets.
+  AC_REQUIRE([AC_SYS_LARGEFILE])
+
+  dnl Some Mac OS X variants won't access large inode numbers by default.
+  dnl Defining _DARWIN_USE_64_BIT_INODE fixes this.  See
+  dnl <http://developer.apple.com/library/mac/releasenotes/Darwin/SymbolVariantsRelNotes>.
+  dnl
+  dnl The simplest thing is to define this symbol everywhere.
+  dnl That helps on the affected systems, and doesn't hurt anywhere.
+  AC_DEFINE([_DARWIN_USE_64_BIT_INODE], [1],
+    [Define if you want to use large inode numbers
+     when running on Mac OS X 10.5 or later.])
+])

new file mode 100644
--- /dev/null
+++ b/modules/large-inode
@@ -0,0 +1,22 @@
+Description:
+Use large inode numbers.
+
+Files:
+m4/large-inode.m4
+
+Depends-on:
+
+configure.ac-early:
+AC_REQUIRE([gl_SYS_LARGE_INODE])
+
+configure.ac:
+
+Makefile.am:
+
+Include:
+
+License:
+LGPLv2+
+
+Maintainer:
+all