message: Fix build on XL compiler
diff: @@ -358,6 +358,14 @@ namespace axom
  {
  namespace primal
  {
  +//------------------------------------------------------------------------------
  +
  +template <typename T, int NDIMS>
  +constexpr T BoundingBox<T, NDIMS>::InvalidMin;
  +
  +template <typename T, int NDIMS>
  +constexpr T BoundingBox<T, NDIMS>::InvalidMax;
  +
  //------------------------------------------------------------------------------
  template <typename T, int NDIMS>
  template <typename OtherT>
  