Corrections as proposed by @branan.

CMakeLists.txt

@@ -7,8 +7,11 @@ if(WIN32 AND NOT CYGWIN)
 endif(WIN32 AND NOT CYGWIN)
 if(UNIX)
     add_definitions(-DHS_BUILD_FOR_UNIX)
-    add_definitions(-std=c++0x)
 endif(UNIX)
+
+if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
+    add_definitions(-std=c++0x)
+endif()
 # End HeadSpin Configuration
 
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")

Sources/Plasma/FeatureLib/pfAnimation/plLightModifier.cpp

@@ -90,7 +90,7 @@ void plLightModifier::AddTarget(plSceneObject* so)
 
 void plLightModifier::RemoveTarget(plSceneObject* so)
 {
-    if ((so = fTarget))
+    if (so == fTarget)
         fLight = nil;
     plSimpleModifier::RemoveTarget(so);
 }

Sources/Plasma/PubUtilLib/plDrawable/plSpaceTree.cpp

@@ -291,7 +291,8 @@ void plSpaceTree::HarvestEnabledLeaves(plVolumeIsect* cull, const hsBitVector& c
     if( IsEmpty() )
         return;
 
-    if((fCullFunc = cull))
+    fCullFunc = cull;
+    if (fCullFunc)
         IHarvestAndCullEnabledLeaves(fRoot, cache, list);
     else
         IHarvestEnabledLeaves(fRoot, cache, list);
@@ -372,7 +373,8 @@ void plSpaceTree::HarvestLeaves(plVolumeIsect* cull, hsBitVector& list) const
 {
     if( !IsEmpty() )
     {
-        if((fCullFunc = cull))
+        fCullFunc = cull;
+        if (fCullFunc)
             IHarvestAndCullLeaves(fTree[fRoot], scratchTotVec, list);
         else
             IHarvestLeaves(fTree[fRoot], scratchTotVec, list);