new file mode 100644
--- /dev/null
+++ b/m4/dirent_h.m4
@@ -0,0 +1,37 @@
+# dirent_h.m4 serial 1
+dnl Copyright (C) 2008 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.
+
+dnl Written by Bruno Haible.
+
+AC_DEFUN([gl_DIRENT_H],
+[
+  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
+  dnl once only, before all statements that occur in other macros.
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+
+  gl_CHECK_NEXT_HEADERS([dirent.h])
+])
+
+dnl Unconditionally enables the replacement of <dirent.h>.
+AC_DEFUN([gl_REPLACE_DIRENT_H],
+[
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+  DIRENT_H='dirent.h'
+])
+
+AC_DEFUN([gl_DIRENT_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
+  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+])
+
+AC_DEFUN([gl_DIRENT_H_DEFAULTS],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) dnl for REPLACE_FCHDIR
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  DIRENT_H='';      AC_SUBST([DIRENT_H])
+])