message: Left out a set of ifdef to guard against parallel portions of the header file...
diff: @@ -102,6 +102,7 @@ public:
  }
  };
  +#ifdef MFEM_USE_MPI
  class ParFieldInterpolant : public FieldInterpolant
  {
  protected:
  @@ -154,6 +155,7 @@ public:
  delete ParL2;
  }
  };
  +#endif
  class VectorQuadratureIntegrator : public LinearFormIntegrator
  {
  