--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/collect-utils.h	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,49 @@
+/* Utility functions used by tools like collect2 and lto-wrapper.
+   Copyright (C) 2009-2017 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC 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.
+
+GCC 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 GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_COLLECT_UTILS_H
+#define GCC_COLLECT_UTILS_H
+
+/* Provided in collect-utils.c.  */
+extern void notice (const char *, ...)
+  __attribute__ ((format (printf, 1, 2)));
+extern void fatal_signal (int);
+
+extern struct pex_obj *collect_execute (const char *, char **,
+					const char *, const char *,
+					int, bool);
+extern int collect_wait (const char *, struct pex_obj *);
+extern void do_wait (const char *, struct pex_obj *);
+extern void fork_execute (const char *, char **, bool);
+extern void utils_cleanup (bool);
+
+
+extern bool debug;
+extern bool verbose;
+extern bool save_temps;
+
+/* Provided by the tool itself.  */
+
+/* The name of the tool, printed in error messages.  */
+extern const char tool_name[];
+/* Called by utils_cleanup.  */
+extern void tool_cleanup (bool);
+extern void maybe_unlink (const char *);
+
+#endif /* GCC_COLLECT_UTILS_H */