new file mode 100644
--- /dev/null
+++ b/packages/language/c/libc/current/include/errno.h
@@ -0,0 +1,83 @@
+#ifndef CYGONCE_LIBC_ERRNO_H
+#define CYGONCE_LIBC_ERRNO_H
+//========================================================================
+//
+//      errno.h
+//
+//      ANSI error code routines
+//
+//========================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License.  You may obtain a copy of the License at
+// http://sourceware.cygnus.com/ecos
+// 
+// Software distributed under the License is distributed on an "AS IS"
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the
+// License for the specific language governing rights and limitations under
+// the License.
+// 
+// The Original Code is eCos - Embedded Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998 Cygnus Solutions.  All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):   jlarmour
+// Contributors:  jlarmour@cygnus.co.uk
+// Date:        1998-02-13
+// Purpose:     
+// Description: 
+// Usage:       #include <errno.h>
+//
+//####DESCRIPTIONEND####
+//
+//========================================================================
+
+// CONFIGURATION
+
+#include <pkgconf/libc.h>          // Configuration header
+
+// Include the C library?
+#ifdef CYGPKG_LIBC
+
+// INCLUDES
+
+#include <cyg/infra/cyg_type.h>    // Common type definitions etc.
+#include <cyg/error/codes.h>       // Common error code definitions
+
+// FUNCTION PROTOTYPES
+
+#ifdef CYGSEM_LIBC_PER_THREAD_ERRNO
+
+externC Cyg_ErrNo *
+cyg_get_errno_p( void );
+
+#endif // ifdef CYGSEM_LIBC_PER_THREAD_ERRNO
+
+// VARIABLES
+
+#ifdef CYGSEM_LIBC_PER_THREAD_ERRNO
+
+# define errno (*cyg_get_errno_p())  // Global error status
+
+#else
+
+externC Cyg_ErrNo errno;            // Global error status
+
+#endif // ifdef CYGSEM_LIBC_PER_THREAD_ERRNO
+
+
+#endif // ifdef CYGPKG_LIBC     
+
+#endif // CYGONCE_LIBC_ERRNO_H multiple inclusion protection
+
+// EOF errno.h