diff --git a/Engine/lib/convexDecomp/NvRemoveTjunctions.cpp b/Engine/lib/convexDecomp/NvRemoveTjunctions.cpp
index 67ecd287c..f9ac21ce8 100644
--- a/Engine/lib/convexDecomp/NvRemoveTjunctions.cpp
+++ b/Engine/lib/convexDecomp/NvRemoveTjunctions.cpp
@@ -67,6 +67,9 @@ NvRemoveTjunctions.cpp : A code snippet to remove tjunctions from a triangle mes
 #include "NvHashMap.h"
 #include "NvRemoveTjunctions.h"
 #include "NvFloatMath.h"
+#ifdef LINUX
+   #include <climits>
+#endif
 
 #pragma warning(disable:4189)
 
diff --git a/Engine/source/T3D/physics/bullet/btWorld.cpp b/Engine/source/T3D/physics/bullet/btWorld.cpp
index 3ca43d793..9ef5d8a50 100644
--- a/Engine/source/T3D/physics/bullet/btWorld.cpp
+++ b/Engine/source/T3D/physics/bullet/btWorld.cpp
@@ -33,7 +33,11 @@
 #include "console/consoleTypes.h"
 #include "scene/sceneRenderState.h"
 #include "T3D/gameBase/gameProcess.h"
-
+#ifdef _WIN32
+#include "BulletMultiThreaded/Win32ThreadSupport.h"
+#elif defined (USE_PTHREADS)
+#include "BulletMultiThreaded/PosixThreadSupport.h"
+#endif
 
 BtWorld::BtWorld() :
    mProcessList( NULL ),
diff --git a/Engine/source/console/dynamicTypes.h b/Engine/source/console/dynamicTypes.h
index f03beead2..a10ab0def 100644
--- a/Engine/source/console/dynamicTypes.h
+++ b/Engine/source/console/dynamicTypes.h
@@ -252,7 +252,7 @@ const EngineTypeInfo* _MAPTYPE() { return TYPE< T >(); }
    extern S32 type; \
    extern const char* castConsoleTypeToString( _ConsoleConstType< nativeType >::ConstType &arg ); \
    extern bool castConsoleTypeFromString( nativeType &arg, const char *str ); \
-   template<> extern S32 TYPEID< nativeType >();
+   template<> S32 TYPEID< nativeType >();
    
 #define DefineUnmappedConsoleType( type, nativeType ) \
    DefineConsoleType( type, nativeType ) \
diff --git a/Engine/source/console/engineTypes.h b/Engine/source/console/engineTypes.h
index 397d67c16..208a16322 100644
--- a/Engine/source/console/engineTypes.h
+++ b/Engine/source/console/engineTypes.h
@@ -416,7 +416,7 @@ namespace _Private {
 
 
 #define _DECLARE_TYPE( type )                                                                \
-   template<> extern const EngineTypeInfo* TYPE< type >();                                   \
+   template<> const EngineTypeInfo* TYPE< type >();                                          \
    template<> struct _SCOPE< type > {                                                        \
       EngineExportScope& operator()() const {                                                \
          return *reinterpret_cast< EngineExportScope* >(                                     \
diff --git a/Engine/source/gui/controls/guiTreeViewCtrl.cpp b/Engine/source/gui/controls/guiTreeViewCtrl.cpp
index 4bd98b640..5e71b7188 100644
--- a/Engine/source/gui/controls/guiTreeViewCtrl.cpp
+++ b/Engine/source/gui/controls/guiTreeViewCtrl.cpp
@@ -33,7 +33,9 @@
 #include "platform/event.h"
 #include "gfx/gfxDrawUtil.h"
 #include "gui/controls/guiTextEditCtrl.h"
-#include "gui/editor/editorFunctions.h"
+#ifdef TORQUE_TOOLS
+   #include "gui/editor/editorFunctions.h"
+#endif
 #include "console/engineAPI.h"
 
 
@@ -4042,7 +4044,10 @@ void GuiTreeViewCtrl::onRenderCell(Point2I offset, Point2I cell, bool, bool )
       // If this item is a VirtualParent we can use the generic SimGroup123 icons.
       // However if there is already an icon in the EditorIconRegistry for this
       // exact class (not counting parent class icons) we want to use that instead.
-      bool hasClassIcon = gEditorIcons.hasIconNoRecurse( pObject );
+      bool hasClassIcon = false;
+#ifdef TORQUE_TOOLS
+      hasClassIcon = gEditorIcons.hasIconNoRecurse( pObject );
+#endif
 
       // draw the icon associated with the item
       if ( !hasClassIcon && item->mState.test(Item::VirtualParent))
@@ -5280,7 +5285,10 @@ void GuiTreeViewCtrl::onRenameValidate()
 
    if ( mRenameInternal )
       obj->setInternalName( data );   
-   else if ( validateObjectName( data, obj ) )
+   else
+#ifdef TORQUE_TOOLS
+   if ( validateObjectName( data, obj ) )
+#endif
       obj->assignName( data ); 
 }
 
diff --git a/Engine/source/lighting/advanced/advancedLightingFeatures.cpp b/Engine/source/lighting/advanced/advancedLightingFeatures.cpp
index 159eb113a..fb61494b5 100644
--- a/Engine/source/lighting/advanced/advancedLightingFeatures.cpp
+++ b/Engine/source/lighting/advanced/advancedLightingFeatures.cpp
@@ -31,7 +31,7 @@
 #include "gfx/gfxDevice.h"
 #include "core/util/safeDelete.h"
 
-#ifndef TORQUE_OS_MAC
+#if !defined( TORQUE_OS_MAC ) && !defined( TORQUE_OS_LINUX )
 #  include "lighting/advanced/hlsl/gBufferConditionerHLSL.h"
 #  include "lighting/advanced/hlsl/advancedLightingFeaturesHLSL.h"
 #else
@@ -54,7 +54,7 @@ void AdvancedLightingFeatures::registerFeatures( const GFXFormat &prepassTargetF
 
    if(GFX->getAdapterType() == OpenGL)
    {
-#ifdef TORQUE_OS_MAC
+#if defined( TORQUE_OS_MAC ) || defined( TORQUE_OS_LINUX )
       cond = new GBufferConditionerGLSL( prepassTargetFormat );
       FEATUREMGR->registerFeature(MFT_PrePassConditioner, cond);
       FEATUREMGR->registerFeature(MFT_RTLighting, new DeferredRTLightingFeatGLSL());
@@ -66,7 +66,7 @@ void AdvancedLightingFeatures::registerFeatures( const GFXFormat &prepassTargetF
    }
    else
    {
-#ifndef TORQUE_OS_MAC
+#if !defined( TORQUE_OS_MAC ) && !defined( TORQUE_OS_LINUX )
       cond = new GBufferConditionerHLSL( prepassTargetFormat, GBufferConditionerHLSL::ViewSpace );
       FEATUREMGR->registerFeature(MFT_PrePassConditioner, cond);
       FEATUREMGR->registerFeature(MFT_RTLighting, new DeferredRTLightingFeatHLSL());
diff --git a/Engine/source/lighting/basic/basicLightManager.cpp b/Engine/source/lighting/basic/basicLightManager.cpp
index 18db77cb6..0ca0e0bde 100644
--- a/Engine/source/lighting/basic/basicLightManager.cpp
+++ b/Engine/source/lighting/basic/basicLightManager.cpp
@@ -49,7 +49,7 @@
 #include "lighting/common/projectedShadow.h"
 
 
-#ifdef TORQUE_OS_MAC
+#if defined( TORQUE_OS_MAC ) || defined( TORQUE_OS_LINUX )
 #include "shaderGen/GLSL/shaderFeatureGLSL.h"
 #include "shaderGen/GLSL/bumpGLSL.h"
 #include "shaderGen/GLSL/pixSpecularGLSL.h"
@@ -167,7 +167,7 @@ void BasicLightManager::activate( SceneManager *sceneManager )
 
    if( GFX->getAdapterType() == OpenGL )
    {
-      #ifdef TORQUE_OS_MAC
+      #if defined( TORQUE_OS_MAC ) || defined( TORQUE_OS_LINUX )
          FEATUREMGR->registerFeature( MFT_LightMap, new LightmapFeatGLSL );
          FEATUREMGR->registerFeature( MFT_ToneMap, new TonemapFeatGLSL );
          FEATUREMGR->registerFeature( MFT_NormalMap, new BumpFeatGLSL );
@@ -177,7 +177,7 @@ void BasicLightManager::activate( SceneManager *sceneManager )
    }
    else
    {
-      #ifndef TORQUE_OS_MAC
+      #if !defined( TORQUE_OS_MAC ) && !defined( TORQUE_OS_LINUX )
          FEATUREMGR->registerFeature( MFT_LightMap, new LightmapFeatHLSL );
          FEATUREMGR->registerFeature( MFT_ToneMap, new TonemapFeatHLSL );
          FEATUREMGR->registerFeature( MFT_NormalMap, new BumpFeatHLSL );
diff --git a/Engine/source/lighting/common/lightMapParams.cpp b/Engine/source/lighting/common/lightMapParams.cpp
index bc161cb32..e7c2f39de 100644
--- a/Engine/source/lighting/common/lightMapParams.cpp
+++ b/Engine/source/lighting/common/lightMapParams.cpp
@@ -22,8 +22,17 @@
 
 #include "lighting/common/lightMapParams.h"
 #include "core/stream/bitStream.h"
+#include "core/module.h"
 
-const LightInfoExType LightMapParams::Type( "LightMapParams" );
+MODULE_BEGIN( LightMapParams )
+MODULE_INIT_AFTER( ShadowMapParams )
+MODULE_INIT
+{
+   LightMapParams::Type = "LightMapParams";
+}
+MODULE_END;
+
+LightInfoExType LightMapParams::Type( "" );
 
 LightMapParams::LightMapParams( LightInfo *light ) :
    representedInLightmap(false), 
diff --git a/Engine/source/lighting/common/lightMapParams.h b/Engine/source/lighting/common/lightMapParams.h
index fa83c063c..7a1b2bcec 100644
--- a/Engine/source/lighting/common/lightMapParams.h
+++ b/Engine/source/lighting/common/lightMapParams.h
@@ -34,7 +34,7 @@ public:
    virtual ~LightMapParams();
 
    /// The LightInfoEx hook type.
-   static const LightInfoExType Type;
+   static LightInfoExType Type;
 
    // LightInfoEx
    virtual void set( const LightInfoEx *ex );
diff --git a/Engine/source/lighting/lightManager.cpp b/Engine/source/lighting/lightManager.cpp
index fb7660c04..c26ec3db4 100644
--- a/Engine/source/lighting/lightManager.cpp
+++ b/Engine/source/lighting/lightManager.cpp
@@ -314,7 +314,7 @@ void LightManager::_update4LightConsts(   const SceneData &sgData,
 
       // NOTE: We haven't ported the lighting shaders on OSX
       // to the optimized HLSL versions.
-      #ifdef TORQUE_OS_MAC
+      #if defined( TORQUE_OS_MAC ) || defined( TORQUE_OS_LINUX )
          static AlignedArray<Point3F> lightPositions( 4, sizeof( Point4F ) );
       #else
          static AlignedArray<Point4F> lightPositions( 3, sizeof( Point4F ) );
@@ -342,7 +342,7 @@ void LightManager::_update4LightConsts(   const SceneData &sgData,
          if ( !light )            
             break;
 
-         #ifdef TORQUE_OS_MAC
+         #if defined( TORQUE_OS_MAC ) || defined( TORQUE_OS_LINUX )
 
             lightPositions[i] = light->getPosition();
 
@@ -381,7 +381,7 @@ void LightManager::_update4LightConsts(   const SceneData &sgData,
       shaderConsts->setSafe( lightDiffuseSC, lightColors );
       shaderConsts->setSafe( lightInvRadiusSqSC, lightInvRadiusSq );
 
-      #ifndef TORQUE_OS_MAC
+      #if !defined( TORQUE_OS_MAC ) && !defined( TORQUE_OS_LINUX )
 
          shaderConsts->setSafe( lightSpotDirSC, lightSpotDirs );
          shaderConsts->setSafe( lightSpotAngleSC, lightSpotAngle );
diff --git a/Engine/source/lighting/shadowMap/lightShadowMap.cpp b/Engine/source/lighting/shadowMap/lightShadowMap.cpp
index 7e7e03242..a25b7e706 100644
--- a/Engine/source/lighting/shadowMap/lightShadowMap.cpp
+++ b/Engine/source/lighting/shadowMap/lightShadowMap.cpp
@@ -34,7 +34,7 @@
 #include "materials/baseMatInstance.h"
 #include "scene/sceneManager.h"
 #include "scene/sceneRenderState.h"
-#include "scene/zones/SceneZoneSpace.h"
+#include "scene/zones/sceneZoneSpace.h"
 #include "lighting/lightManager.h"
 #include "math/mathUtils.h"
 #include "shaderGen/shaderGenVars.h"
@@ -42,6 +42,7 @@
 #include "core/stream/bitStream.h"
 #include "math/mathIO.h"
 #include "materials/shaderData.h"
+#include "core/module.h"
 
 // Used for creation in ShadowMapParams::getOrCreateShadowMap()
 #include "lighting/shadowMap/singleLightShadowMap.h"
@@ -545,8 +546,15 @@ void LightingShaderConstants::_onShaderReload()
       init( mShader );
 }
 
+MODULE_BEGIN( ShadowMapParams )
+MODULE_INIT_BEFORE( LightMapParams )
+MODULE_INIT
+{
+   ShadowMapParams::Type = "ShadowMapParams" ;
+}
+MODULE_END;
 
-const LightInfoExType ShadowMapParams::Type( "ShadowMapParams" );
+LightInfoExType ShadowMapParams::Type( "" );
 
 ShadowMapParams::ShadowMapParams( LightInfo *light ) 
    :  mLight( light ),
diff --git a/Engine/source/lighting/shadowMap/lightShadowMap.h b/Engine/source/lighting/shadowMap/lightShadowMap.h
index 1de278932..94746d806 100644
--- a/Engine/source/lighting/shadowMap/lightShadowMap.h
+++ b/Engine/source/lighting/shadowMap/lightShadowMap.h
@@ -287,7 +287,7 @@ public:
    virtual ~ShadowMapParams();
 
    /// The LightInfoEx hook type.
-   static const LightInfoExType Type;
+   static LightInfoExType Type;
 
    // LightInfoEx
    virtual void set( const LightInfoEx *ex );
diff --git a/Engine/source/math/mSilhouetteExtractor.h b/Engine/source/math/mSilhouetteExtractor.h
index a166000e0..e602c0ecc 100644
--- a/Engine/source/math/mSilhouetteExtractor.h
+++ b/Engine/source/math/mSilhouetteExtractor.h
@@ -92,14 +92,14 @@ struct SilhouetteExtractorBasePerspective : public SilhouetteExtractorBase< Poly
 
          // Determine orientation of each of the polygons.
 
-         const U32 numPolygons = mPolyhedron->getNumPlanes();
+         const U32 numPolygons = this->mPolyhedron->getNumPlanes();
          mPolygonOrientations = ( Orientation* ) FrameAllocator::alloc( sizeof( Orientation ) * numPolygons );
 
          Point3F camPos = camView.getPosition();
 
          for( U32 i = 0; i < numPolygons; ++ i )
          {
-            if (mPolyhedron->getPlanes()[i].whichSide( camPos ) == PlaneF::Front)
+            if (this->mPolyhedron->getPlanes()[i].whichSide( camPos ) == PlaneF::Front)
                mPolygonOrientations[i] = FrontFacing;
             else
                mPolygonOrientations[i] = BackFacing;
diff --git a/Engine/source/platformX86UNIX/threads/semaphore.cpp b/Engine/source/platformX86UNIX/threads/semaphore.cpp
index 2bdaade06..64e73454f 100644
--- a/Engine/source/platformX86UNIX/threads/semaphore.cpp
+++ b/Engine/source/platformX86UNIX/threads/semaphore.cpp
@@ -55,13 +55,25 @@ Semaphore::~Semaphore()
   delete mData;
 }
 
-bool Semaphore::acquire(bool block)
+bool Semaphore::acquire(bool block, S32 timeoutMS)
 {
-   AssertFatal(mData, "Semaphore::acquire - Invalid semaphore.");
+   AssertFatal(mData && mData->semaphore, "Semaphore::acquire - Invalid semaphore.");
    if (block)
    {
-      if (SDL_SemWait(mData->semaphore) < 0)
-         AssertFatal(false, "Semaphore::acquie - Wait failed.");
+      // Semaphore acquiring is different from the MacOS/Win realization because SDL_SemWaitTimeout() with "infinite" timeout can be too heavy on some platforms.
+      // (see "man SDL_SemWaitTimeout(3)" for more info)
+      // "man" states to avoid the use of SDL_SemWaitTimeout at all, but at current stage this looks like a valid and working solution, so keeping it this way.
+      // [bank / Feb-2010]
+      if (timeoutMS == -1)
+      {
+         if (SDL_SemWait(mData->semaphore) < 0)
+            AssertFatal(false, "Semaphore::acquie - Wait failed.");
+      }
+      else
+      {
+         if (SDL_SemWaitTimeout(mData->semaphore, timeoutMS) < 0)
+            AssertFatal(false, "Semaphore::acquie - Wait with timeout failed.");
+      }
       return (true);
    }
    else
diff --git a/Engine/source/platformX86UNIX/x86UNIXStub.dedicated.cpp b/Engine/source/platformX86UNIX/x86UNIXStub.dedicated.cpp
index b9814862a..b13b72f3f 100644
--- a/Engine/source/platformX86UNIX/x86UNIXStub.dedicated.cpp
+++ b/Engine/source/platformX86UNIX/x86UNIXStub.dedicated.cpp
@@ -81,6 +81,8 @@ void OpenALDLLShutdown() {}
 
 // Platform Stubs
 
+bool Platform::excludeOtherInstances(const char*) { return true; }
+
 // clipboard
 const char* Platform::getClipboard() { return ""; }
 bool Platform::setClipboard(const char *text) { return false; }
diff --git a/Engine/source/renderInstance/renderPassManager.cpp b/Engine/source/renderInstance/renderPassManager.cpp
index 95f8e4f71..8a2e44c11 100644
--- a/Engine/source/renderInstance/renderPassManager.cpp
+++ b/Engine/source/renderInstance/renderPassManager.cpp
@@ -42,7 +42,7 @@
 #include "console/engineAPI.h"
 
 
-const RenderInstType RenderInstType::Invalid( String::EmptyString );
+const RenderInstType RenderInstType::Invalid( "" );
 
 const RenderInstType RenderPassManager::RIT_Interior("Interior");
 const RenderInstType RenderPassManager::RIT_Mesh("Mesh");