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diff --git a/m4/stat-time.m4 b/m4/stat-time.m4
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+# Checks for stat-related time functions.
+
+# Copyright (C) 1998, 1999, 2001, 2003, 2005 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.
+
+dnl From Paul Eggert.
+
+# st_atim.tv_nsec - Linux, Solaris
+# st_atimespec.tv_nsec - FreeBSD, if ! defined _POSIX_SOURCE
+# st_atimensec - FreeBSD, if defined _POSIX_SOURCE
+# st_atim.st__tim.tv_nsec - UnixWare (at least 2.1.2 through 7.1)
+# st_spare1 - Cygwin?
+
+AC_DEFUN([gl_STAT_TIME],
+[
+  AC_LIBSOURCES([stat-time.h])
+
+  AC_REQUIRE([AC_C_INLINE])
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec], [],
+    [AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec], [],
+       [AC_CHECK_MEMBERS([struct stat.st_atimensec], [],
+         [AC_CHECK_MEMBERS([struct stat.st_atim.st__tim.tv_nsec], [],
+            [AC_CHECK_MEMBERS([struct stat.st_spare1], [],
+               [],
+               [#include <sys/types.h>
+                #include <sys/stat.h>])],
+            [#include <sys/types.h>
+             #include <sys/stat.h>])],
+         [#include <sys/types.h>
+          #include <sys/stat.h>])],
+       [#include <sys/types.h>
+       #include <sys/stat.h>])],
+    [#include <sys/types.h>
+     #include <sys/stat.h>])
+])