--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2007-02-17  Bruno Haible  <bruno@clisp.org>
 
+	* modules/fcntl-tests: New file.
+	* tests/test-fcntl.c: New file.
+
 	* modules/byteswap-tests: New file.
 	* tests/test-byteswap.c: New file.
 

new file mode 100644
--- /dev/null
+++ b/modules/fcntl-tests
@@ -0,0 +1,13 @@
+Files:
+tests/test-fcntl.c
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-fcntl
+check_PROGRAMS += test-fcntl
+
+License:
+LGPL

new file mode 100644
--- /dev/null
+++ b/tests/test-fcntl.c
@@ -0,0 +1,33 @@
+/* Test of <fcntl.h> substitute.
+   Copyright (C) 2007 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
+
+#include <config.h>
+
+#include <fcntl.h>
+
+/* Check that the various O_* macros are defined.  */
+int o = O_DIRECT | O_DIRECTORY | O_DSYNC | O_NDELAY | O_NOATIME | O_NONBLOCK
+	| O_NOCTTY | O_NOFOLLOW | O_NOLINKS | O_RSYNC | O_SYNC
+	| O_BINARY | O_TEXT;
+
+int
+main ()
+{
+  return 0;
+}