From 178365f5e934ef7b5866a0cae244c5a4f0ab0344 Mon Sep 17 00:00:00 2001
From: Johannes Schickel
Date: Wed, 9 Jan 2013 07:36:05 +0100
Subject: COMMON: Add a header for C++11 keywords for pre-C++11 compilers.

This currently adds defines for nullptr and override, so we can use them in
pre-C++11 compilers, while taking advantage of them with C++11 compilers.
---
 common/c++11-compat.h | 42 ++++++++++++++++++++++++++++++++++++++++++
 common/scummsys.h     |  5 ++++-
 2 files changed, 46 insertions(+), 1 deletion(-)
 create mode 100644 common/c++11-compat.h

diff --git a/common/c++11-compat.h b/common/c++11-compat.h
new file mode 100644
index 0000000000..50d79bd79e
--- /dev/null
+++ b/common/c++11-compat.h
@@ -0,0 +1,42 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * 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 COMMON_CPP11_COMPAT_H
+#define COMMON_CPP11_COMPAT_H
+
+#if __cplusplus >= 201103L
+#error "c++11-compat.h included when C++11 is available"
+#endif
+
+//
+// Custom nullptr replacement. This is not type safe as the real C++11 nullptr
+// though.
+//
+#define nullptr 0
+
+//
+// Replacement for the override keyword. This allows compilation of code
+// which uses it, but does not feature any semantic.
+//
+#define override
+
+#endif
diff --git a/common/scummsys.h b/common/scummsys.h
index 2f4efe702f..cd8a949ce7 100644
--- a/common/scummsys.h
+++ b/common/scummsys.h
@@ -144,7 +144,10 @@
 	#endif
 #endif
 
-
+// Include our C++11 compatability header for pre-C++11 compilers.
+#if __cplusplus < 201103L
+#include "common/c++11-compat.h"
+#endif
 
 // Use config.h, generated by configure
 #if defined(HAVE_CONFIG_H)
-- 
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