LL physics extensions stub

Since the CMakeLists.txt includes some same .cmake files as the viewer,
I think the project might as well be a part of the Linden libraries
code. And for now is put under llprimitive (might not be consistent, in
fact the opposite, with they way llplugin relates to slplugin), but I
think this way results the least change, and it still works.

The differences include:
- all files (common llphysicsextensions headers to be included by
  library users and the stub implementation files) are put inside one
  directory, and the CMakeLists.txt is adjusted accordingly;
- modernised CMakeLists.txt, so include_directories are now implied by
  target_link_libraries;
- some file name fix;
- add_library is not explicitly set to STATIC;

16 files changed, 1402 insertions, 2 deletions

diff --git a/indra/cmake/LLPhysicsExtensions.cmake b/indra/cmake/LLPhysicsExtensions.cmake
index 36821447c9..b2151dc781 100644
--- a/indra/cmake/LLPhysicsExtensions.cmake
+++ b/indra/cmake/LLPhysicsExtensions.cmake
@@ -26,6 +26,9 @@ if (HAVOK)
 elseif (HAVOK_TPV)
    use_prebuilt_binary(llphysicsextensions_tpv)
    target_link_libraries( llphysicsextensions_impl INTERFACE llphysicsextensions_tpv)
+elseif (NOT (USE_AUTOBUILD_3P OR USE_CONAN))
+   target_link_libraries( llphysicsextensions_impl INTERFACE llphysicsextensionsstub)
+   return ()
 else (HAVOK)
    use_prebuilt_binary(llphysicsextensions_stub)
    set(LLPHYSICSEXTENSIONS_SRC_DIR ${LIBS_PREBUILT_DIR}/llphysicsextensions/stub)
diff --git a/indra/llprimitive/CMakeLists.txt b/indra/llprimitive/CMakeLists.txt
index d69cd958a0..b6e8773d03 100644
--- a/indra/llprimitive/CMakeLists.txt
+++ b/indra/llprimitive/CMakeLists.txt
@@ -66,6 +66,10 @@ target_link_libraries(llprimitive
         ll::glh_linear
         )
 
+if (NOT (USE_AUTOBUILD_3P OR USE_CONAN))
+	add_subdirectory(llphysicsextensions)
+endif ()
+
 #add unit tests
 if (LL_TESTS)
     INCLUDE(LLAddBuildTest)
diff --git a/indra/llprimitive/llphysicsextensions/CMakeLists.txt b/indra/llprimitive/llphysicsextensions/CMakeLists.txt
new file mode 100644
index 0000000000..c950fc6560
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/CMakeLists.txt
@@ -0,0 +1,86 @@
+# -*- cmake -*-
+
+project(llphysicsextensions)
+
+include(00-Common)
+include(Variables)
+include(LLCommon)
+include(LLMath)
+
+set(LLPHYSICSEXTENSIONS_LIB_NAME     llphysicsextensions)
+
+if (WINDOWS)
+   set(LLPHYSICSEXTENSIONS_LIBRARIES ${LLPHYSICSEXTENSIONS_LIB_NAME}.lib)
+else (WINDOWS)
+   set(LLPHYSICSEXTENSIONS_LIBRARIES ${LLPHYSICSEXTENSIONS_LIB_NAME}.a)
+endif (WINDOWS)
+
+set(LLPHYSICSEXTENSIONS_INCLUDE_DIR
+    ${CMAKE_CURRENT_SOURCE_DIR})
+
+set(LLPHYSICSEXTENSIONS_DEBUG_LIBRARY_PATH ${LIBS_PREBUILT_DIR}/lib/debug)
+set(LLPHYSICSEXTENSIONS_RELEASE_LIBRARY_PATH ${LIBS_PREBUILT_DIR}/lib/release)
+
+#set(LLPHYSICSEXTENSIONS_LIBRARIES_LIBRARIES
+#    debug     ${LLPHYSICSEXTENSIONS_DEBUG_LIB}
+#    optimized ${LLPHYSICSEXTENTIONS_RELEASE_LIB}
+#)
+
+if (LINUX)
+    list(INSERT LLPHYSICSEXTENSIONS_LIBRARIES 0 -Wl,--start-group)
+    list(APPEND LLPHYSICSEXTENSIONS_LIBRARIES -Wl,--end-group)
+endif (LINUX)
+
+#include_directories(
+#    ${CMAKE_SOURCE_DIR}/llphysicsextensions
+#    ${LLPHYSICSEXTENSIONS_INCLUDE_DIR}
+#    ${LLCOMMON_INCLUDE_DIRS}
+#    ${LLMATH_INCLUDE_DIRS}
+#    )
+
+set(llphysicsextensions_SOURCE_FILES
+    llpathinglib.cpp
+    LLPathingLibStubImpl.cpp
+    llconvexdecomposition.cpp
+    LLConvexDecompositionStubImpl.cpp
+    llphysicsextensions.cpp
+    LLPhysicsExtensionsStubImpl.cpp
+    )
+    
+set(llphysicsextensions_HEADER_FILES
+
+    ${LLPHYSICSEXTENSIONS_INCLUDE_DIR}/llpathinglib.h
+    ${LLPHYSICSEXTENSIONS_INCLUDE_DIR}/llconvexdecomposition.h
+    ${LLPHYSICSEXTENSIONS_INCLUDE_DIR}/llphysicsextensions.h
+    LLPathingLibStubImpl.h
+    LLConvexDecompositionStubImpl.h
+    LLPhysicsExtensionsStubImpl.h
+    )
+
+if (WINDOWS)
+   list(APPEND llphysicsextensions_HEADER_FILES 
+               ${LLPHYSICSEXTENSIONS_INCLUDE_DIR}/windowsincludes.h)
+endif (WINDOWS)
+
+set_source_files_properties(${llphysicsextensions_HEADER_FILES}
+                            PROPERTIES HEADER_FILE_ONLY TRUE)
+
+# some of the include files contain compile-time switches based on these
+set_source_files_properties(${llphysicsextensions_SOURCE_FILES}
+                            PROPERTIES COMPILE_DEFINITIONS "LL_PATHING_LIB_STUB;LL_CONVEX_DECOMP_STUB;LL_PHYSICS_EXTENSIONS_STUB")
+
+list(APPEND llphysicsextensionsstub_SOURCE_FILES ${llphysicsextensions_HEADER_FILES})
+
+add_library(${PROJECT_NAME}stub ${${PROJECT_NAME}_SOURCE_FILES})
+target_include_directories(${PROJECT_NAME}stub INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
+target_link_libraries(${PROJECT_NAME}stub llmath llcommon)
+
+if (LINUX)
+    IF(CMAKE_BUILD_TYPE MATCHES Release)
+    SET(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/release)
+    ENDIF(CMAKE_BUILD_TYPE MATCHES Release)
+    IF(CMAKE_BUILD_TYPE MATCHES Debug)
+    SET(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/debug)
+    ENDIF(CMAKE_BUILD_TYPE MATCHES Debug)
+
+endif (LINUX)
diff --git a/indra/llprimitive/llphysicsextensions/LLConvexDecompositionStubImpl.cpp b/indra/llprimitive/llphysicsextensions/LLConvexDecompositionStubImpl.cpp
new file mode 100644
index 0000000000..b1214a7f31
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/LLConvexDecompositionStubImpl.cpp
@@ -0,0 +1,143 @@
+/**
+* @file   LLConvexDecompositionStubImpl.cpp
+* @author falcon@lindenlab.com
+* @brief  A stub implementation of LLConvexDecomposition
+*
+* $LicenseInfo:firstyear=2011&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 20112010, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#include <string.h>
+#include <memory>
+#include "LLConvexDecompositionStubImpl.h"
+
+LLConvexDecomposition* LLConvexDecompositionImpl::getInstance()
+{
+	return NULL;
+}
+
+LLCDResult LLConvexDecompositionImpl::initSystem()
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::initThread()
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::quitThread()
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::quitSystem()
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+void LLConvexDecompositionImpl::genDecomposition(int& decomp)
+{
+	decomp = -1;
+}
+
+void LLConvexDecompositionImpl::deleteDecomposition(int decomp)
+{
+
+}
+
+void LLConvexDecompositionImpl::bindDecomposition(int decomp)
+{
+
+}
+
+LLCDResult LLConvexDecompositionImpl::setParam(const char* name, float val)
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::setParam(const char* name, bool val)
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::setParam(const char* name, int val)
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::setMeshData( const LLCDMeshData* data, bool vertex_based )
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::registerCallback(int stage, llcdCallbackFunc callback )
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::executeStage(int stage)
+{
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+int LLConvexDecompositionImpl::getNumHullsFromStage(int stage)
+{
+	return 0;
+}
+
+LLCDResult LLConvexDecompositionImpl::getSingleHull( LLCDHull* hullOut )
+{
+	memset( hullOut, 0, sizeof(LLCDHull) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::getHullFromStage( int stage, int hull, LLCDHull* hullOut )
+{
+	memset( hullOut, 0, sizeof(LLCDHull) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::getMeshFromStage( int stage, int hull, LLCDMeshData* meshDataOut )
+{
+	memset( meshDataOut, 0, sizeof(LLCDMeshData) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult	LLConvexDecompositionImpl::getMeshFromHull( LLCDHull* hullIn, LLCDMeshData* meshOut )
+{
+	memset( meshOut, 0, sizeof(LLCDMeshData) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+LLCDResult LLConvexDecompositionImpl::generateSingleHullMeshFromMesh(LLCDMeshData* meshIn, LLCDMeshData* meshOut)
+{
+	memset( meshOut, 0, sizeof(LLCDMeshData) );
+	return LLCD_NOT_IMPLEMENTED;
+}
+
+void LLConvexDecompositionImpl::loadMeshData(const char* fileIn, LLCDMeshData** meshDataOut)
+{
+	static LLCDMeshData meshData;
+	memset( &meshData, 0, sizeof(LLCDMeshData) );
+	*meshDataOut = &meshData;
+}
+
diff --git a/indra/llprimitive/llphysicsextensions/LLConvexDecompositionStubImpl.h b/indra/llprimitive/llphysicsextensions/LLConvexDecompositionStubImpl.h
new file mode 100644
index 0000000000..9ae879efb4
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/LLConvexDecompositionStubImpl.h
@@ -0,0 +1,92 @@
+/**
+* @file   LLConvexDecompositionStubImpl.h
+* @author falcon@lindenlab.com
+* @brief  A stub implementation of LLConvexDecomposition
+*
+* $LicenseInfo:firstyear=2011&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 20112010, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#ifndef LL_CONVEX_DECOMP_UTIL_H
+#define LL_CONVEX_DECOMP_UTIL_H
+
+#include "llconvexdecomposition.h"
+
+class LLConvexDecompositionImpl : public LLConvexDecomposition
+{
+	public:
+
+		virtual ~LLConvexDecompositionImpl() {}
+
+		static LLConvexDecomposition* getInstance();
+		static LLCDResult initSystem();
+		static LLCDResult initThread();
+		static LLCDResult quitThread();
+		static LLCDResult quitSystem();
+
+		void genDecomposition(int& decomp);
+		void deleteDecomposition(int decomp);
+		void bindDecomposition(int decomp);
+
+		// Sets *paramsOut to the address of the LLCDParam array and returns
+		// the length of the array
+		int getParameters(const LLCDParam** paramsOut)
+		{
+			*paramsOut = NULL;
+			return 0;
+		}
+
+		int getStages(const LLCDStageData** stagesOut)
+		{
+			*stagesOut = NULL;
+			return 0;
+		}
+
+		// Set a parameter by name. Returns false if out of bounds or unsupported parameter
+		LLCDResult	setParam(const char* name, float val);
+		LLCDResult	setParam(const char* name, int val);
+		LLCDResult	setParam(const char* name, bool val);
+		LLCDResult	setMeshData( const LLCDMeshData* data, bool vertex_based );
+		LLCDResult	registerCallback(int stage, llcdCallbackFunc callback );
+
+		LLCDResult	executeStage(int stage);
+
+		int getNumHullsFromStage(int stage);
+
+		LLCDResult	getHullFromStage( int stage, int hull, LLCDHull* hullOut );
+		LLCDResult  getSingleHull( LLCDHull* hullOut ) ;
+
+		// TODO: Implement lock of some kind to disallow this call if data not yet ready
+		LLCDResult	getMeshFromStage( int stage, int hull, LLCDMeshData* meshDataOut);
+		LLCDResult	getMeshFromHull( LLCDHull* hullIn, LLCDMeshData* meshOut );
+
+		// For visualizing convex hull shapes in the viewer physics shape display
+		LLCDResult generateSingleHullMeshFromMesh( LLCDMeshData* meshIn, LLCDMeshData* meshOut);
+
+		/// Debug
+		void loadMeshData(const char* fileIn, LLCDMeshData** meshDataOut);
+
+	private:
+		LLConvexDecompositionImpl() {}
+};
+
+#endif //LL_CONVEX_DECOMP_UTIL_H
+
diff --git a/indra/llprimitive/llphysicsextensions/LLPathingLibStubImpl.cpp b/indra/llprimitive/llphysicsextensions/LLPathingLibStubImpl.cpp
new file mode 100644
index 0000000000..8ad13532f2
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/LLPathingLibStubImpl.cpp
@@ -0,0 +1,107 @@
+/**
+* @file   LLPathingLibStubImpl.cpp
+* @author prep@lindenlab.com
+* @brief  A stubbed implementation of LLPathingLib
+*
+* $LicenseInfo:firstyear=2012&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 20112010, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#include "llpathinglib.h"
+#include "LLPathingLibStubImpl.h"
+
+#include "llsd.h"
+
+//=============================================================================
+LLPathingLibImpl::LLPathingLibImpl()
+{
+}
+
+LLPathingLibImpl::~LLPathingLibImpl()
+{
+
+}
+
+LLPathingLib* LLPathingLibImpl::getInstance()
+{
+	return NULL;
+}
+
+
+LLPathingLib::LLPLResult LLPathingLibImpl::initSystem()
+{
+	return LLPL_NOT_IMPLEMENTED;
+}
+
+LLPathingLib::LLPLResult LLPathingLibImpl::quitSystem()
+{
+	return LLPL_NOT_IMPLEMENTED;
+}
+
+LLPathingLib::LLPLResult LLPathingLibImpl::extractNavMeshSrcFromLLSD( const LLSD::Binary& dataBlock, int dir )
+{
+	return LLPL_NOT_IMPLEMENTED;
+}
+
+void LLPathingLibImpl::processNavMeshData()
+{
+}
+
+LLPathingLibImpl::LLPLResult LLPathingLibImpl::generatePath( const PathingPacket& pathingPacket )
+{
+	return LLPL_NOT_IMPLEMENTED;
+}
+
+void LLPathingLibImpl::setNavMeshMaterialType( LLPLCharacterType materialType )
+{
+}
+
+void LLPathingLibImpl::setNavMeshColors( const NavMeshColors& color )
+{
+}
+
+void LLPathingLibImpl::renderNavMesh()
+{
+}
+
+void LLPathingLibImpl::renderNavMeshEdges()
+{
+}
+
+void LLPathingLibImpl::renderNavMeshShapesVBO( U32 shapeRenderFlags )
+{
+}
+
+void LLPathingLibImpl::renderPath()
+{
+}
+
+void LLPathingLibImpl::renderPathBookend( LLRender& gl, LLPathingLib::LLPLPathBookEnd type )
+{
+}
+
+void LLPathingLibImpl::cleanupVBOManager()
+{
+}
+
+void LLPathingLibImpl::cleanupResidual()
+{
+}
diff --git a/indra/llprimitive/llphysicsextensions/LLPathingLibStubImpl.h b/indra/llprimitive/llphysicsextensions/LLPathingLibStubImpl.h
new file mode 100644
index 0000000000..75fdb3fa0f
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/LLPathingLibStubImpl.h
@@ -0,0 +1,78 @@
+/**
+* @file   LLPathingLibSubImpl.h
+* @author prep@lindenlab.com
+* @brief  A stubbed implementation of LLPathingLib
+*
+* $LicenseInfo:firstyear=2012&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2012, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#ifndef LL_PATHING_LIB_H
+#define LL_PATHING_LIB_H
+
+#include "llpathinglib.h"
+
+class LLSD;
+
+//=============================================================================
+class LLPathingLibImpl : public LLPathingLib
+{
+public:
+	LLPathingLibImpl();
+	virtual ~LLPathingLibImpl();
+
+	// Obtain a pointer to the actual implementation
+	static LLPathingLib* getInstance();
+	static LLPathingLib::LLPLResult initSystem();
+	static LLPathingLib::LLPLResult quitSystem();
+
+	//Extract and store navmesh data from the llsd datablock sent down by the server
+	virtual LLPLResult extractNavMeshSrcFromLLSD( const LLSD::Binary& dataBlock, int dir );
+	//Stitch any stored navmeshes together
+	virtual void processNavMeshData();
+
+	//Method used to generate and visualize a path on the viewers navmesh
+	virtual LLPLResult generatePath( const PathingPacket& pathingPacket );
+
+	//Set the material type for the heatmap type
+	virtual void setNavMeshMaterialType( LLPLCharacterType materialType );
+	//Set the various navmesh colors
+	virtual void setNavMeshColors( const NavMeshColors& color );
+
+	//The entry method to rendering the client side navmesh
+	virtual void renderNavMesh();
+	//The entry method to rendering the client side navmesh edges
+	virtual void renderNavMeshEdges();
+	//The entry method to render the client navmesh shapes VBO
+	virtual void renderNavMeshShapesVBO( U32 shapeRenderFlags );
+	//The entry method to render the clients designated path
+	virtual void renderPath();
+	//The entry method to render the capsule bookends for the clients designated path
+	virtual void renderPathBookend( LLRender& gl, LLPathingLib::LLPLPathBookEnd type );
+
+	//Method to delete any vbo's that are currently being managed by the pathing library
+	virtual void cleanupVBOManager();
+	//Method to cleanup any allocations within the implementation
+	virtual void cleanupResidual();
+};
+
+#endif //LL_PATHING_LIB_H
+
diff --git a/indra/llprimitive/llphysicsextensions/LLPhysicsExtensionsStubImpl.cpp b/indra/llprimitive/llphysicsextensions/LLPhysicsExtensionsStubImpl.cpp
new file mode 100644
index 0000000000..2c432f94e3
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/LLPhysicsExtensionsStubImpl.cpp
@@ -0,0 +1,49 @@
+/**
+* @file   LLPhysicsExtensionsStubImpl.cpp
+* @author prep@lindenlab.com
+* @brief  A stubbed implementation of LLPhysicsExtensions
+*
+* $LicenseInfo:firstyear=2012&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2012, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#include "llphysicsextensions.h"
+#include "LLPhysicsExtensionsStubImpl.h"
+
+//=============================================================================
+LLPhysicsExtensionsImpl::LLPhysicsExtensionsImpl()
+{
+}
+
+LLPhysicsExtensionsImpl::~LLPhysicsExtensionsImpl()
+{
+}
+
+bool LLPhysicsExtensionsImpl::initSystem()
+{
+	return false;
+}
+
+bool LLPhysicsExtensionsImpl::quitSystem()
+{
+	return false;
+}
+
diff --git a/indra/llprimitive/llphysicsextensions/LLPhysicsExtensionsStubImpl.h b/indra/llprimitive/llphysicsextensions/LLPhysicsExtensionsStubImpl.h
new file mode 100644
index 0000000000..ac14da1ac3
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/LLPhysicsExtensionsStubImpl.h
@@ -0,0 +1,46 @@
+/**
+* @file   LLPhysicsExtensionsSubImpl.h
+* @author prep@lindenlab.com
+* @brief  A stubbed implementation of LLPhysicsExtensions
+*
+* $LicenseInfo:firstyear=2012&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2012, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#ifndef LL_PHYSICS_EXTENSIONS_STUB_IMPL_H
+#define LL_PHYSICS_EXTENSIONS_STUB_IMPL_H
+
+#include "llphysicsextensions.h"
+
+//=============================================================================
+class LLPhysicsExtensionsImpl : public LLPhysicsExtensions
+{
+	public:
+
+		LLPhysicsExtensionsImpl();
+		virtual ~LLPhysicsExtensionsImpl();
+
+		static bool initSystem();
+		static bool quitSystem();
+};
+
+#endif //LL_PHYSICS_EXTENSIONS_STUB_IMPL_H
+
diff --git a/indra/llprimitive/llphysicsextensions/llconvexdecomposition.cpp b/indra/llprimitive/llphysicsextensions/llconvexdecomposition.cpp
new file mode 100644
index 0000000000..f7caf7f676
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/llconvexdecomposition.cpp
@@ -0,0 +1,102 @@
+/**
+* @file   llconvexdecomposition.cpp
+* @author falcon@lindenlab.com
+* @brief  A Havok implementation of LLConvexDecomposition interface
+*
+* $LicenseInfo:firstyear=2011&license=lgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2011, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#if defined(_WINDOWS)
+#	include "windowsincludes.h"
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+#if !defined(LL_CONVEX_DECOMP_STUB)
+#	include "LLConvexDecompositionImpl.h"
+#else
+#	include "LLConvexDecompositionStubImpl.h"
+#endif
+
+#include "llconvexdecomposition.h"
+
+
+/*static */bool LLConvexDecomposition::s_isInitialized = false;
+
+/*static*/bool LLConvexDecomposition::isFunctional()
+{
+#if !defined(LL_CONVEX_DECOMP_STUB)
+	return true;
+#else
+	return false;
+#endif
+}
+
+#if !defined(LL_CONVEX_DECOMP_STUB) && defined(HK_COMPILER_CLANG)
+ //have to specialize before use so that generalized one not auto gen-d
+HK_SINGLETON_SPECIALIZATION_DECL(LLConvexDecompositionImpl);
+#endif
+
+/*static*/LLConvexDecomposition* LLConvexDecomposition::getInstance()
+{
+	if ( !s_isInitialized )
+	{
+		return NULL;
+	}
+	else
+	{
+#if !defined(LL_CONVEX_DECOMP_STUB)
+		return &hkSingleton<LLConvexDecompositionImpl>::getInstance();
+#else
+		return LLConvexDecompositionImpl::getInstance();
+#endif
+	}
+}
+
+/*static */LLCDResult LLConvexDecomposition::initSystem()
+{
+	LLCDResult result = LLConvexDecompositionImpl::initSystem();
+	if ( result == LLCD_OK )
+	{
+		s_isInitialized = true;
+	}
+	return result;
+}
+
+/*static */LLCDResult LLConvexDecomposition::initThread()
+{
+	return LLConvexDecompositionImpl::initThread();
+}
+
+/*static */LLCDResult LLConvexDecomposition::quitThread()
+{
+	return LLConvexDecompositionImpl::quitThread();
+}
+
+/*static */LLCDResult LLConvexDecomposition::quitSystem()
+{
+	return LLConvexDecompositionImpl::quitSystem();
+}
+
+
diff --git a/indra/llprimitive/llphysicsextensions/llconvexdecomposition.h b/indra/llprimitive/llphysicsextensions/llconvexdecomposition.h
new file mode 100644
index 0000000000..10c6d55315
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/llconvexdecomposition.h
@@ -0,0 +1,231 @@
+/**
+ * @file llconvexdecomposition.cpp
+ * @brief LLConvexDecomposition interface definition
+ *
+ * $LicenseInfo:firstyear=2011&license=lgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library 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
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_CONVEX_DECOMPOSITION
+#define LL_CONVEX_DECOMPOSITION
+
+typedef int bool32;
+
+#if defined(_WIN32) || defined(_WIN64)
+#define LLCD_CALL __cdecl
+#else
+#define LLCD_CALL
+#endif
+
+struct LLCDParam
+{
+	enum LLCDParamType
+	{
+		LLCD_INVALID = 0,
+		LLCD_INTEGER,
+		LLCD_FLOAT,
+		LLCD_BOOLEAN,
+		LLCD_ENUM
+	};
+
+	struct LLCDEnumItem
+	{
+		const char*	mName;
+		int			mValue;
+	};
+
+	union LLCDValue
+	{
+		float	mFloat;
+		int		mIntOrEnumValue;
+		bool32	mBool;
+	};
+
+	union LLCDParamDetails
+	{
+		struct {
+			LLCDValue mLow;
+			LLCDValue mHigh;
+			LLCDValue mDelta;
+		} mRange;
+
+		struct {
+			int				mNumEnums;
+			LLCDEnumItem*	mEnumsArray;
+		} mEnumValues;
+	};
+
+	const char*					mName;
+	const char*					mDescription;
+	LLCDParamType				mType;
+	LLCDParamDetails			mDetails;
+	LLCDValue					mDefault;
+	int							mStage;
+
+	// WARNING: Only the LLConvexDecomposition implementation
+	// should change this value
+	int							mReserved;
+};
+
+struct LLCDStageData
+{
+	const char*	mName;
+	const char* mDescription;
+	bool32 mSupportsCallback;
+};
+
+struct LLCDMeshData
+{
+	enum IndexType
+	{
+		INT_16,
+		INT_32
+	};
+
+	const float*	mVertexBase;
+	int				mVertexStrideBytes;
+	int				mNumVertices;
+	const void*		mIndexBase;
+	IndexType		mIndexType;
+	int				mIndexStrideBytes;
+	int				mNumTriangles;
+};
+
+struct LLCDHull
+{
+	const float*	mVertexBase;
+	int				mVertexStrideBytes;
+	int				mNumVertices;
+};
+
+enum LLCDResult
+{
+	LLCD_OK = 0,
+	LLCD_UNKOWN_ERROR,
+	LLCD_NULL_PTR,
+	LLCD_INVALID_STAGE,
+	LLCD_UNKNOWN_PARAM,
+	LLCD_BAD_VALUE,
+	LLCD_REQUEST_OUT_OF_RANGE,
+	LLCD_INVALID_MESH_DATA,
+	LLCD_INVALID_HULL_DATA,
+	LLCD_STAGE_NOT_READY,
+	LLCD_INVALID_THREAD,
+	LLCD_NOT_IMPLEMENTED
+};
+
+// This callback will receive a string describing the current subtask being performed
+// as well as a pair of numbers indicating progress. (The values should not be interpreted
+// as a completion percentage as 'current' may be greater than 'final'.)
+// If the callback returns zero, the decomposition will be terminated
+typedef int				(LLCD_CALL *llcdCallbackFunc)(const char* description, int current, int final);
+
+class LLConvexDecomposition
+{
+public:
+	// Obtain a pointer to the actual implementation
+	static LLConvexDecomposition* getInstance();
+
+	/// @returns false if this is the stub
+	static bool isFunctional();
+	
+	static LLCDResult initSystem();
+	static LLCDResult initThread();
+	static LLCDResult quitThread();
+	static LLCDResult quitSystem();
+
+	// Generate a decomposition object handle
+	virtual void genDecomposition(int& decomp) = 0;
+	// Delete decomposition object handle
+	virtual void deleteDecomposition(int decomp) = 0;
+	// Bind given decomposition handle
+	// Commands operate on currently bound decomposition
+	virtual void bindDecomposition(int decomp) = 0;
+
+	// Sets *paramsOut to the address of the LLCDParam array and returns
+	// the number of parameters
+	virtual int getParameters(const LLCDParam** paramsOut) = 0;
+
+
+	// Sets *stagesOut to the address of the LLCDStageData array and returns
+	// the number of stages
+	virtual int getStages(const LLCDStageData** stagesOut) = 0;
+
+
+	// Set a parameter by name. Pass enum values as integers.
+	virtual LLCDResult	setParam(const char* name, float val)	= 0;
+	virtual LLCDResult	setParam(const char* name, int val)		= 0;
+	virtual LLCDResult	setParam(const char* name, bool val)	= 0;
+
+
+	// Set incoming mesh data. Data is copied to local buffers and will
+	// persist until the next setMeshData call
+	virtual LLCDResult	setMeshData( const LLCDMeshData* data, bool vertex_based ) = 0;
+
+
+	// Register a callback to be called periodically during the specified stage
+	// See the typedef above for more information
+	virtual LLCDResult	registerCallback( int stage, llcdCallbackFunc callback ) = 0;
+
+
+	// Execute the specified decomposition stage
+	virtual LLCDResult	executeStage(int stage) = 0;
+	virtual LLCDResult  buildSingleHull() = 0 ;
+
+
+	// Gets the number of hulls generated by the specified decompositions stage
+	virtual int getNumHullsFromStage(int stage) = 0;
+
+
+	// Populates hullOut to reference the internal copy of the requested hull
+	// The data will persist only until the next executeStage call for that stage.
+	virtual LLCDResult	getHullFromStage( int stage, int hull, LLCDHull* hullOut ) = 0;
+
+	virtual LLCDResult  getSingleHull( LLCDHull* hullOut ) = 0 ;
+
+
+	// TODO: Implement lock of some kind to disallow this call if data not yet ready
+	// Populates the meshDataOut to reference the utility's copy of the mesh geometry
+	// for the hull and stage specified.
+	// You must copy this data if you want to continue using it after the next executeStage
+	// call
+	virtual LLCDResult	getMeshFromStage( int stage, int hull, LLCDMeshData* meshDataOut) = 0;
+
+
+	// Creates a mesh from hullIn and temporarily stores it internally in the utility.
+	// The mesh data persists only until the next call to getMeshFromHull
+	virtual LLCDResult	getMeshFromHull( LLCDHull* hullIn, LLCDMeshData* meshOut ) = 0;
+
+	// Takes meshIn, generates a single convex hull from it, converts that to a mesh
+	// stored internally, and populates meshOut to reference the internally stored data.
+	// The data is persistent only until the next call to generateSingleHullMeshFromMesh
+	virtual LLCDResult generateSingleHullMeshFromMesh( LLCDMeshData* meshIn, LLCDMeshData* meshOut) = 0;
+
+	//
+	/// Debug
+	virtual void loadMeshData(const char* fileIn, LLCDMeshData** meshDataOut) = 0;
+
+private:
+	static bool s_isInitialized;
+};
+
+#endif //LL_CONVEX_DECOMPOSITION
+
diff --git a/indra/llprimitive/llphysicsextensions/llpathinglib.cpp b/indra/llprimitive/llphysicsextensions/llpathinglib.cpp
new file mode 100644
index 0000000000..1a6017c4b8
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/llpathinglib.cpp
@@ -0,0 +1,110 @@
+/**
+* @file   llpathinglib.cpp
+* @author prep@lindenlab.com
+* @brief  LLPathingLib core creation methods
+*
+* $LicenseInfo:firstyear=2012&license=lgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2011, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#if defined(_WINDOWS)
+#	include "windowsincludes.h"
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+
+#if !defined(LL_PATHING_LIB_STUB)
+#	include "LLPathingLibImpl.h"
+#else
+#	include "LLPathingLibStubImpl.h"
+#endif
+
+#include "llpathinglib.h"
+
+//disable the undefined symbol optimization
+//#pragma warning (disable : 4221)
+
+//=============================================================================
+
+/*static */bool LLPathingLib::s_isInitialized = false;
+
+//=============================================================================
+
+
+/*static*/bool LLPathingLib::isFunctional()
+{
+#if !defined(LL_PATHING_LIB_STUB)
+	return true;
+#else
+	return false;
+#endif
+}
+
+#if !defined(LL_PATHING_LIB_STUB) && defined(HK_COMPILER_CLANG)
+ //have to specialize before use so that generalized one not auto gen-d
+HK_SINGLETON_SPECIALIZATION_DECL(LLPathingLibImpl);
+#endif
+
+/*static*/LLPathingLib* LLPathingLib::getInstance()
+{
+	if ( !s_isInitialized )
+	{
+		return NULL;
+	}
+	else
+	{
+#if !defined(LL_PATHING_LIB_STUB)
+		return &hkSingleton<LLPathingLibImpl>::getInstance();
+#else
+		return LLPathingLibImpl::getInstance();
+#endif
+	}
+}
+
+//=============================================================================
+
+/*static */LLPathingLib::LLPLResult LLPathingLib::initSystem()
+{
+	if ( LLPathingLibImpl::initSystem() == LLPL_OK )
+	{
+		s_isInitialized = true;
+		return LLPL_OK;
+	}
+	return LLPL_UNKOWN_ERROR;
+}
+//=============================================================================
+/*static */LLPathingLib::LLPLResult LLPathingLib::quitSystem()
+{
+	LLPLResult quitResult = LLPL_UNKOWN_ERROR;
+
+	if (s_isInitialized)
+	{
+		quitResult = LLPathingLibImpl::quitSystem();
+		s_isInitialized = false;
+	}
+
+	return quitResult;
+}
+//=============================================================================
+
diff --git a/indra/llprimitive/llphysicsextensions/llpathinglib.h b/indra/llprimitive/llphysicsextensions/llpathinglib.h
new file mode 100644
index 0000000000..c8c7410797
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/llpathinglib.h
@@ -0,0 +1,187 @@
+/**
+ * @file llpathinglib.cpp
+ * @author prep@lindenlab.com
+ * @brief LLPathingLib interface definition
+ *
+ * $LicenseInfo:firstyear=2012&license=lgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library 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
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_PATHING_LIBRARY
+#define LL_PATHING_LIBRARY
+
+#include "llpreprocessor.h"
+#include "llsd.h"
+#include "v3dmath.h"
+#include "v4math.h"
+
+#include "v4color.h"
+#include "v4coloru.h"
+#include "llphysicsextensions.h"
+
+typedef int bool32;
+
+#if defined(_WIN32) || defined(_WIN64)
+#define LLCD_CALL __cdecl
+#else
+#define LLCD_CALL
+#endif
+
+class LLRender;
+
+//=============================================================================
+class LLPathingLib
+{
+
+public:
+	enum LLShapeType
+	{
+		LLST_WalkableObjects = 0,
+		LLST_ObstacleObjects,
+		LLST_MaterialPhantoms,
+		LLST_ExclusionPhantoms,		
+		LLST_MaxShapeTypes  = LLST_ExclusionPhantoms+1,
+		LLST_None			= LLST_MaxShapeTypes+2,
+		LLST_SimpleBox		= LLST_None+1,
+		LLST_SimpleCapsule  = LLST_SimpleBox+1,
+	};
+
+	enum LLShapeTypeFlag
+	{
+		LLSTB_WalkableObjects   = 0x1 << 1,
+		LLSTB_ObstacleObjects   = 0x1 << 2,
+		LLSTB_MaterialPhantoms  = 0x1 << 3,
+		LLSTB_ExclusionPhantoms = 0x1 << 4,
+		LLSTB_None			    = 0x1 << 5
+ 	};
+
+	enum LLPLPathBookEnd
+	{
+		LLPL_START = 0,
+		LLPL_END,
+	};
+
+	enum LLPLResult
+	{
+		LLPL_OK = 0,
+		LLPL_NOTSET,
+		LLPL_ERROR,
+		LLPL_NO_NAVMESH,
+		LLPL_UNKOWN_ERROR,
+		LLPL_NO_PATH,
+		LLPL_PATH_GENERATED_OK,
+		LLPL_NOT_IMPLEMENTED,
+	};
+
+	enum LLPLCharacterType
+	{
+		LLPL_CHARACTER_TYPE_A    = 4,
+		LLPL_CHARACTER_TYPE_B    = 3,
+		LLPL_CHARACTER_TYPE_C    = 2,
+		LLPL_CHARACTER_TYPE_D    = 1,
+		LLPL_CHARACTER_TYPE_NONE = 0
+	};
+
+	struct PathingPacket
+	{
+		PathingPacket() : mHasPointA(false), mHasPointB(false), mCharacterWidth(0.0f), mCharacterType(LLPL_CHARACTER_TYPE_NONE) {}
+		bool              mHasPointA;
+		LLVector3         mStartPointA;
+		LLVector3         mEndPointA;
+		bool              mHasPointB;
+		LLVector3         mStartPointB;
+		LLVector3         mEndPointB;
+		F32               mCharacterWidth;
+		LLPLCharacterType mCharacterType;
+	};
+
+	struct NavMeshColors
+	{
+		LLColor4U	  mWalkable;
+		LLColor4U	  mObstacle;
+		LLColor4U	  mMaterial;
+		LLColor4U	  mExclusion;
+		LLColor4U	  mConnectedEdge;
+		LLColor4U	  mBoundaryEdge;
+		LLColor4	  mHeatColorBase;
+		LLColor4	  mHeatColorMax;
+		LLColor4U	  mFaceColor;	
+		LLColor4U	  mStarValid;	
+		LLColor4U	  mStarInvalid;	
+		LLColor4U	  mTestPath;	
+		LLColor4U	  mWaterColor;
+	};
+
+public:
+	//Ctor
+	LLPathingLib() {}
+	virtual ~LLPathingLib() {}
+
+	/// @returns false if this is the stub
+	static bool isFunctional();
+	
+	// Obtain a pointer to the actual implementation
+	static LLPathingLib* getInstance();
+	static LLPathingLib::LLPLResult initSystem();
+	static LLPathingLib::LLPLResult quitSystem();
+
+	//Extract and store navmesh data from the llsd datablock sent down by the server
+	virtual LLPLResult extractNavMeshSrcFromLLSD( const LLSD::Binary& dataBlock, int dir )  = 0;
+	//Stitch any stored navmeshes together
+	virtual void processNavMeshData( ) = 0;
+
+	//Method used to generate and visualize a path on the viewers navmesh
+	virtual LLPLResult generatePath( const PathingPacket& pathingPacket ) = 0;
+
+	//Set the material type for the heatmap type
+	virtual void setNavMeshMaterialType( LLPLCharacterType materialType ) = 0;
+	//Set the various navmesh colors
+	virtual void setNavMeshColors( const NavMeshColors& color ) = 0;
+
+	//The entry method to rendering the client side navmesh
+	virtual void renderNavMesh()  = 0;
+	//The entry method to rendering the client side navmesh edges
+	virtual void renderNavMeshEdges()  = 0;
+	//The entry method to render the client navmesh shapes VBO
+	virtual void renderNavMeshShapesVBO( U32 shapeRenderFlags )  = 0;
+	//The entry method to render the clients designated path
+	virtual void renderPath() = 0;
+	//The entry method to render the capsule bookends for the clients designated path
+	virtual void renderPathBookend( LLRender& gl, LLPathingLib::LLPLPathBookEnd type ) = 0;
+	//Renders all of the generated simple shapes (using their default transforms)
+	virtual void renderSimpleShapes( LLRender& gl, F32 regionsWaterHeight ) = 0;
+
+	//Method called from second life to create a capsule from properties of a character
+	virtual void createPhysicsCapsuleRep( F32 length, F32 radius,  BOOL horizontal, const LLUUID& id ) = 0;
+	//Removes any cached physics capsule using a list of cached uuids
+	virtual void cleanupPhysicsCapsuleRepResiduals() = 0;
+	//Renders a selected uuids physics rep
+	virtual void renderSimpleShapeCapsuleID( LLRender& gl, const LLUUID& id, const LLVector3& pos, const LLQuaternion& rot  ) = 0;
+
+	//Method to delete any vbo's that are currently being managed by the pathing library
+	virtual void cleanupVBOManager( ) = 0;
+	//Method to cleanup any allocations within the implementation
+	virtual void cleanupResidual( ) = 0;
+private:
+	static bool s_isInitialized;
+};
+
+#endif //LL_PATHING_LIBRARY
diff --git a/indra/llprimitive/llphysicsextensions/llphysicsextensions.cpp b/indra/llprimitive/llphysicsextensions/llphysicsextensions.cpp
new file mode 100644
index 0000000000..9bb4522a23
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/llphysicsextensions.cpp
@@ -0,0 +1,103 @@
+/**
+* @file   llphysicsextensions.cpp
+* @author nyx@lindenlab.com
+* @brief  LLPhysicsExtensions core initialization methods
+*
+* $LicenseInfo:firstyear=2012&license=lgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2011, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#if defined(_WINDOWS)
+#	include "windowsincludes.h"
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+
+#include "llphysicsextensions.h"
+
+#if !defined(LL_PHYSICS_EXTENSIONS_STUB)
+#	include "LLPhysicsExtensionsImpl.h"
+#else
+#	include "LLPhysicsExtensionsStubImpl.h"
+#endif
+
+
+//disable the undefined symbol optimization
+//#pragma warning (disable : 4221)
+
+//=============================================================================
+
+/*static */bool LLPhysicsExtensions::s_isInitialized = false;
+
+
+/*static*/bool LLPhysicsExtensions::isFunctional()
+{
+#if !defined(LL_PHYSICS_EXTENSIONS_STUB)
+	return true;
+#else
+	return false;
+#endif
+}
+
+//=============================================================================
+
+#if !defined(LL_PHYSICS_EXTENSIONS_STUB) && defined(HK_COMPILER_CLANG)
+ //have to specialize before use so that generalized one not auto gen-d
+HK_SINGLETON_SPECIALIZATION_DECL(LLPhysicsExtensionsImpl);
+#endif
+
+/*static*/LLPhysicsExtensions* LLPhysicsExtensions::getInstance()
+{
+	if ( !s_isInitialized )
+	{
+		return NULL;
+	}
+	else
+	{
+#if !defined(LL_PHYSICS_EXTENSIONS_STUB)
+		return &hkSingleton<LLPhysicsExtensionsImpl>::getInstance();
+#else
+		return LLPhysicsExtensionsImpl::getInstance();
+#endif
+	}
+}
+
+//=============================================================================
+
+/*static */bool LLPhysicsExtensions::initSystem()
+{
+	bool result = LLPhysicsExtensionsImpl::initSystem();
+	if ( result )
+	{
+		s_isInitialized = true;
+	}
+	return result;
+}
+//=============================================================================
+/*static */bool LLPhysicsExtensions::quitSystem()
+{
+	return LLPhysicsExtensionsImpl::quitSystem();
+}
+//=============================================================================
+
diff --git a/indra/llprimitive/llphysicsextensions/llphysicsextensions.h b/indra/llprimitive/llphysicsextensions/llphysicsextensions.h
new file mode 100644
index 0000000000..be479f5d8a
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/llphysicsextensions.h
@@ -0,0 +1,59 @@
+/**
+* @file   llphysicsextensions.h
+* @author nyx@lindenlab.com
+* @brief  LLPhysicsExtensions core shared initialization
+*         routines
+* 
+* $LicenseInfo:firstyear=2012&license=lgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2011, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library 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
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#ifndef LL_PHYSICS_EXTENSIONS
+#define LL_PHYSICS_EXTENSIONS
+
+#include "llpreprocessor.h"
+#include "llsd.h"
+#include "v3dmath.h"
+
+#define LLPHYSICSEXTENSIONS_VERSION "1.0"
+
+typedef int bool32;
+
+class LLPhysicsExtensions
+{
+
+public:
+	// Obtain a pointer to the actual implementation
+	static LLPhysicsExtensions* getInstance();
+
+	/// @returns false if this is the stub
+	static bool isFunctional();
+
+	static bool initSystem();
+	static bool quitSystem();
+
+private:
+    static bool s_isInitialized;
+};
+
+#endif //LL_PATHING_LIBRARY
+
+
diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index dbd1f1b4ac..1c095ec548 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -47,7 +47,7 @@ include(ZLIBNG)
 include(URIPARSER)
 include(LLPrimitive)
 
-if (NOT HAVOK_TPV)
+if ((USE_AUTOBUILD_3P OR USE_CONAN) AND NOT HAVOK_TPV)
    # When using HAVOK_TPV, the library is precompiled, so no need for this
 
    # Stub and probably havok lib itself is a hack, autobuild loads a 3p that really is a source tarball
@@ -68,7 +68,7 @@ if (NOT HAVOK_TPV)
         target_compile_options( llphysicsextensions  PRIVATE -Wno-unused-local-typedef)
       endif (DARWIN)
    endif()
-endif (NOT HAVOK_TPV)
+endif ((USE_AUTOBUILD_3P OR USE_CONAN) AND NOT HAVOK_TPV)
 
 
 set(viewer_SOURCE_FILES