GCC 4.5 compatibility: defaulted non-inline function causes linker error.

src/SceneGraph/AbstractFeature.hpp

@@ -36,7 +36,8 @@ template<UnsignedInt dimensions, class T> AbstractFeature<dimensions, T>::Abstra
     object->Containers::template LinkedList<AbstractFeature<dimensions, T>>::insert(this);
 }
 
-template<UnsignedInt dimensions, class T> AbstractFeature<dimensions, T>::~AbstractFeature() = default;
+/* `= default` causes linker errors in GCC 4.5 */
+template<UnsignedInt dimensions, class T> AbstractFeature<dimensions, T>::~AbstractFeature() {}
 
 template<UnsignedInt dimensions, class T> void AbstractFeature<dimensions, T>::markDirty() {}
 

src/SceneGraph/FeatureGroup.hpp

@@ -34,7 +34,9 @@
 
 namespace Magnum { namespace SceneGraph {
 
-template<UnsignedInt dimensions, class T> AbstractFeatureGroup<dimensions, T>::AbstractFeatureGroup() = default;
+/* `= default` causes linker errors in GCC 4.5 */
+template<UnsignedInt dimensions, class T> AbstractFeatureGroup<dimensions, T>::AbstractFeatureGroup() {}
+
 template<UnsignedInt dimensions, class T> AbstractFeatureGroup<dimensions, T>::~AbstractFeatureGroup() = default;
 
 template<UnsignedInt dimensions, class T> void AbstractFeatureGroup<dimensions, T>::add(AbstractFeature<dimensions, T>* feature) {

src/Shapes/shapeImplementation.cpp

@@ -63,8 +63,10 @@ Debug operator<<(Debug debug, ShapeDimensionTraits<3>::Type value) {
     return debug << "Shapes::Shape3D::Type::(unknown)";
 }
 
+/* `= default` causes linker errors in GCC 4.5 */
+template<UnsignedInt dimensions> AbstractShape<dimensions>::AbstractShape() {}
+
 template<UnsignedInt dimensions> AbstractShape<dimensions>::~AbstractShape() = default;
-template<UnsignedInt dimensions> AbstractShape<dimensions>::AbstractShape() = default;
 
 template struct AbstractShape<2>;
 template struct AbstractShape<3>;