message: Guard OperatorInfo.
diff: @@ -24,6 +24,7 @@ namespace mfem
  namespace ceed
  {
  +#ifdef MFEM_USE_CEED
  /** This structure is a template interface for the Assemble methods of
  PAIntegrator and MFIntegrator. See libceed/mass.cpp for an example. */
  struct OperatorInfo
  @@ -65,6 +66,7 @@ struct OperatorInfo
  /** The size of the data at each quadrature point. */
  int qdatasize;
  };
  +#endif
  /** This class represent a partially assembled operator using libCEED. */
  class PAIntegrator : public Operator
  