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diff --git a/binutils-2.25/gold/debug.h b/binutils-2.25/gold/debug.h
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+// debug.h -- gold internal debugging support   -*- C++ -*-
+
+// Copyright 2007, 2008 Free Software Foundation, Inc.
+// Written by Ian Lance Taylor <iant@google.com>.
+
+// This file is part of gold.
+
+// 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 3 of the License, 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.
+
+#ifndef GOLD_DEBUG_H
+#define GOLD_DEBUG_H
+
+#include <cstring>
+
+#include "parameters.h"
+#include "errors.h"
+
+namespace gold
+{
+
+// The different types of debugging we support.  These are bitflags.
+
+const int DEBUG_TASK = 0x1;
+const int DEBUG_SCRIPT = 0x2;
+const int DEBUG_FILES = 0x4;
+const int DEBUG_RELAXATION = 0x8;
+const int DEBUG_INCREMENTAL = 0x10;
+
+const int DEBUG_ALL = (DEBUG_TASK | DEBUG_SCRIPT | DEBUG_FILES
+		       | DEBUG_RELAXATION | DEBUG_INCREMENTAL);
+
+// Convert a debug string to the appropriate enum.
+inline int
+debug_string_to_enum(const char* arg)
+{
+  static const struct { const char* name; int value; }
+  debug_options[] =
+  {
+    { "task", DEBUG_TASK },
+    { "script", DEBUG_SCRIPT },
+    { "files", DEBUG_FILES },
+    { "relaxation", DEBUG_RELAXATION },
+    { "incremental", DEBUG_INCREMENTAL },
+    { "all", DEBUG_ALL }
+  };
+
+  int retval = 0;
+  for (size_t i = 0; i < sizeof(debug_options) / sizeof(*debug_options); ++i)
+    if (strstr(arg, debug_options[i].name))
+      retval |= debug_options[i].value;
+  return retval;
+}
+
+// Print a debug message if TYPE is enabled.  This is a macro so that
+// we only evaluate the arguments if necessary.
+
+#define gold_debug(TYPE, FORMAT, ...)				\
+  do								\
+    {								\
+      if (is_debugging_enabled(TYPE))				\
+	parameters->errors()->debug(FORMAT, __VA_ARGS__);	\
+    }								\
+  while (0)
+
+} // End namespace gold.
+
+#endif // !defined(GOLD_DEBUG_H)