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diff --git a/extern/bullet2/BulletMultiThreaded/SequentialThreadSupport.cpp b/extern/bullet2/BulletMultiThreaded/SequentialThreadSupport.cpp
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index 00000000000..4e9c822bbc0
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+++ b/extern/bullet2/BulletMultiThreaded/SequentialThreadSupport.cpp
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+/*
+Bullet Continuous Collision Detection and Physics Library
+Copyright (c) 2003-2007 Erwin Coumans  http://bulletphysics.com
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "SequentialThreadSupport.h"
+
+
+#include "SpuCollisionTaskProcess.h"
+#include "SpuNarrowPhaseCollisionTask/SpuGatheringCollisionTask.h"
+
+SequentialThreadSupport::SequentialThreadSupport(SequentialThreadConstructionInfo& threadConstructionInfo)
+{
+	startThreads(threadConstructionInfo);
+}
+
+///cleanup/shutdown Libspe2
+SequentialThreadSupport::~SequentialThreadSupport()
+{
+	stopSPU();
+}
+
+#include <stdio.h>
+
+///send messages to SPUs
+void SequentialThreadSupport::sendRequest(uint32_t uiCommand, ppu_address_t uiArgument0, uint32_t taskId)
+{
+	switch (uiCommand)
+	{
+	case 	CMD_GATHER_AND_PROCESS_PAIRLIST:
+		{
+			btSpuStatus&	spuStatus = m_activeSpuStatus[0];
+			spuStatus.m_userPtr=(void*)uiArgument0;
+			spuStatus.m_userThreadFunc(spuStatus.m_userPtr,spuStatus.m_lsMemory);
+		}
+	break;
+	default:
+		{
+			///not implemented
+			btAssert(0 && "Not implemented");
+		}
+
+	};
+
+
+}
+
+///check for messages from SPUs
+void SequentialThreadSupport::waitForResponse(unsigned int *puiArgument0, unsigned int *puiArgument1)
+{
+	btAssert(m_activeSpuStatus.size());
+	btSpuStatus& spuStatus = m_activeSpuStatus[0];
+	*puiArgument0 = spuStatus.m_taskId;
+	*puiArgument1 = spuStatus.m_status;
+}
+
+void SequentialThreadSupport::startThreads(SequentialThreadConstructionInfo& threadConstructionInfo)
+{
+	m_activeSpuStatus.resize(1);
+	printf("STS: Not starting any threads\n");
+	btSpuStatus& spuStatus = m_activeSpuStatus[0];
+	spuStatus.m_userPtr = 0;
+	spuStatus.m_taskId = 0;
+	spuStatus.m_commandId = 0;
+	spuStatus.m_status = 0;
+	spuStatus.m_lsMemory = threadConstructionInfo.m_lsMemoryFunc();
+	spuStatus.m_userThreadFunc = threadConstructionInfo.m_userThreadFunc;
+	printf("STS: Created local store at %p for task %s\n", spuStatus.m_lsMemory, threadConstructionInfo.m_uniqueName);
+}
+
+void SequentialThreadSupport::startSPU()
+{
+}
+
+void SequentialThreadSupport::stopSPU()
+{
+	m_activeSpuStatus.clear();
+}
+
+void SequentialThreadSupport::setNumTasks(int numTasks)
+{
+	printf("SequentialThreadSupport::setNumTasks(%d) is not implemented and has no effect\n",numTasks);
+}