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diff --git a/m4/fstat.m4 b/m4/fstat.m4
new file mode 100644
index 00000000..b2cf2ad2
--- /dev/null
+++ b/m4/fstat.m4
@@ -0,0 +1,36 @@
+# fstat.m4 serial 4
+dnl Copyright (C) 2011-2013 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_FSTAT],
+[
+  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
+
+  AC_REQUIRE([gl_MSVC_INVAL])
+  if test $HAVE_MSVC_INVALID_PARAMETER_HANDLER = 1; then
+    REPLACE_FSTAT=1
+  fi
+
+  AC_REQUIRE([gl_HEADER_SYS_STAT_H])
+  if test $WINDOWS_64_BIT_ST_SIZE = 1; then
+    REPLACE_FSTAT=1
+  fi
+
+  dnl Replace fstat() for supporting the gnulib-defined open() on directories.
+  m4_ifdef([gl_FUNC_FCHDIR], [
+    gl_TEST_FCHDIR
+    if test $HAVE_FCHDIR = 0; then
+      case "$gl_cv_func_open_directory_works" in
+        *yes) ;;
+        *)
+          REPLACE_FSTAT=1
+          ;;
+      esac
+    fi
+  ])
+])
+
+# Prerequisites of lib/fstat.c.
+AC_DEFUN([gl_PREREQ_FSTAT], [:])