Protect nat/gdb_thread_db.h against multiple inclusion.

Fixes a build error due to typedef redefinition with some compilers.

Also added missing copyright header.

gdb/
	* nat/gdb_thread_db.h: Add copyright header.
	Protect against multiple inclusion.

1 files changed, 22 insertions, 0 deletions

diff --git a/gdb/nat/gdb_thread_db.h b/gdb/nat/gdb_thread_db.h
index 2938eaf8d7b..3be4170cfb6 100644
--- a/gdb/nat/gdb_thread_db.h
+++ b/gdb/nat/gdb_thread_db.h
@@ -1,3 +1,23 @@
+/* Copyright (C) 2000-2015 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   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, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef GDB_THREAD_DB_H
+#define GDB_THREAD_DB_H 1
+
 #ifdef HAVE_THREAD_DB_H
 #include <thread_db.h>
 #else
@@ -52,3 +72,5 @@ typedef td_err_e (td_thr_tlsbase_ftype) (const td_thrhandle_t *th,
 
 typedef const char ** (td_symbol_list_ftype) (void);
 typedef td_err_e (td_ta_delete_ftype) (td_thragent_t *);
+
+#endif /* GDB_THREAD_DB_H */