--- /dev/null
+/* -*- c++ -*- */
+/*
+ * Copyright 2007 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio 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 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio 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.
+ */
+
+#ifndef INCLUDED_GCELL_COMPILER_H
+#define INCLUDED_GCELL_COMPILER_H
+
+/*!
+ * \brief Compiler specific hackery. These are for GCC.
+ */
+
+#define _AL8 __attribute__((aligned (8)))
+#define _AL16 __attribute__((aligned (16)))
+#define _AL128 __attribute__((aligned (128)))
+
+#define _UNUSED __attribute__((unused))
+
+#ifndef likely
+#define likely(x) __builtin_expect(!!(x), 1)
+#define unlikely(x) __builtin_expect(!!(x), 0)
+#endif
+
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
+#endif
+
+
+#endif /* INCLUDED_GCELL_COMPILER_H */