diff --git a/share/builtin.h b/share/builtin.h
deleted file mode 100644
index ce5a87c749ac48d97c08d08e670a65d6fc8cd228..0000000000000000000000000000000000000000
--- a/share/builtin.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/**************************************************************************/
-/*                                                                        */
-/*  This file is part of Frama-C.                                         */
-/*                                                                        */
-/*  Copyright (C) 2007-2019                                               */
-/*    CEA (Commissariat à l'énergie atomique et aux énergies              */
-/*         alternatives)                                                  */
-/*                                                                        */
-/*  you can redistribute it and/or modify it under the terms of the GNU   */
-/*  Lesser General Public License as published by the Free Software       */
-/*  Foundation, version 2.1.                                              */
-/*                                                                        */
-/*  It 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 Lesser General Public License for more details.                   */
-/*                                                                        */
-/*  See the GNU Lesser General Public License version 2.1                 */
-/*  for more details (enclosed in the file licenses/LGPLv2.1).            */
-/*                                                                        */
-/**************************************************************************/
-
-#error "Use share/__fc_builtin.h instead"