add guard

Author: ESeNonFossiIo

include/base_interface.h

@@ -176,6 +176,7 @@ class BaseInterface : public ParameterAcceptor, public SimulatorAccess<dim,space
                                                FEValuesCache<dim,spacedim> &scratch,
                                                CopyData &data) const;
 
+#ifdef DEAL_II_WITH_TRILINOS
   /**
    * Compute linear operators needed by the problem: - @p system_op
    * represents the system matrix associated to the Newton's
@@ -208,11 +209,14 @@ class BaseInterface : public ParameterAcceptor, public SimulatorAccess<dim,space
                                         LinearOperator<LATrilinos::VectorType> &system_op,
                                         LinearOperator<LATrilinos::VectorType> &prec_op,
                                         LinearOperator<LATrilinos::VectorType> &prec_op_finer) const;
+#endif //DEAL_II_WITH_TRILINOS
 
+#ifdef DEAL_II_WITH_PETSC
   virtual void compute_system_operators(const std::vector<shared_ptr<typename LAPETSc::BlockMatrix> >,
                                         LinearOperator<LAPETSc::VectorType> &system_op,
                                         LinearOperator<LAPETSc::VectorType> &prec_op,
                                         LinearOperator<LAPETSc::VectorType> &prec_op_finer) const;
+#endif //DEAL_II_WITH_PETSC
 
   /**
    * Compute linear operators needed by the problem. When using

source/base_interface.cc

@@ -202,7 +202,7 @@ compute_system_operators(const std::vector<shared_ptr<typename LADealII::BlockMa
                          LinearOperator<typename LADealII::VectorType> &) const
 {}
 
-
+#ifdef DEAL_II_WITH_TRILINOS
 template <int dim, int spacedim, typename LAC>
 void
 BaseInterface<dim,spacedim,LAC>::
@@ -213,8 +213,9 @@ compute_system_operators(const std::vector<shared_ptr<LATrilinos::BlockMatrix> >
 {
   Assert(false, ExcPureFunctionCalled ());
 }
+#endif //DEAL_II_WITH_TRILINOS
 
-
+#ifdef DEAL_II_WITH_PETSC
 template <int dim, int spacedim, typename LAC>
 void
 BaseInterface<dim,spacedim,LAC>::
@@ -225,6 +226,7 @@ compute_system_operators(const std::vector<shared_ptr<LAPETSc::BlockMatrix> >,
 {
   Assert(false, ExcPureFunctionCalled ());
 }
+#endif //DEAL_II_WITH_PETSC
 
 template<int dim, int spacedim, typename LAC>
 void