[Trilinos-Users] Two compilation problems with MultiLevelPreconditioner

[James Willenbring]

Ernesto,

Did you use -DHAVE_CONFIG_H?  It looks like you might not have.  We are
currently looking at lifting the requirement of defining HAVE_CONFIG_H,
but for now, that may help you avoid these problems.

Jim

On Wed, 2007-11-28 at 21:58 -0800, Ernesto Prudencio wrote:
> Hi. In a include file of mine, called trilinos.hpp, I have:
> 
> // BEGIN FILE trilinos.hpp
> 
> #include <Epetra_MpiComm.h>
> #include <Epetra_Map.h>
> #include <Epetra_Vector.h>
> #include <Epetra_CrsMatrix.h>
> #include <AztecOO.h> // line 14
> #include <ml_include.h>
> #include <ml_MultiLevelOperator.h>
> #include <Teuchos_ParameterList.hpp> // line 17
> #include <ml_MultiLevelPreconditioner.h>
> #include <ml_epetra_utils.h>
> ...
> 
> class trilinos {
> ...
> private:
>    Epetra_MpiComm*       m_commForTrilinos;
>    Epetra_Map*           m_mapForTrilinos;
>    Epetra_CrsMatrix*     m_matrixForTrilinos;
>    Epetra_LinearProblem* m_problemForTrilinos;
>    AztecOO*              m_solverForTrilinos;
>    Epetra_Vector*        m_rhsForTrilinos;
>    Epetra_Vector*        m_dofsForTrilinos;
>    ML*                                  m_mlHandle;
>    ML_Aggregate*                        m_mlAggObject;
>    ML_Epetra::MultiLevelOperator*       m_mlOperator;
>    Teuchos::ParameterList*              m_mlList;
>    ML_Epetra::MultiLevelPreconditioner* m_mlPreconditioner; // line 66
>    int                                  m_nLevels;
> ...
> }
> 
> // END FILE trilinos.hpp
> 
> --> Compilation problem 1: duplicated defines
> 
> In file included from <installation>/include/Teuchos_ConfigDefs.hpp:77,
>      from <installation>/include/Teuchos_ParameterListExceptions.hpp:33,
>      from <installation>/include/Teuchos_ParameterList.hpp:37,
>      from trilinos.hpp:17,
>      from NML_ITLLinearSolver.C:13: 
> <installation>/include/Teuchos_config.h:14:1: warning: "F77_FUNC" redefined
> In file included from <installation>/include/az_aztec.h:61,
>      from <installation>/include/AztecOO.h:44,
>      from trilinos.hpp:14,
>      from NML_ITLLinearSolver.C:13:
> <installation>/include/az_f77func.h:99:1: warning: this is the location of 
> the previous definition
> 
> In file included from <installation>/include/Teuchos_ConfigDefs.hpp:77,
>      from <installation>/include/Teuchos_ParameterListExceptions.hpp:33,
>      from <installation>/include/Teuchos_ParameterList.hpp:37,
>      from trilinos.hpp:17,
>      from NML_ITLLinearSolver.C:13:
> <installation>/include/Teuchos_config.h:19:1: warning: "F77_FUNC_" redefined
> In file included from <installation>/include/az_aztec.h:61,
>      from <installation>/include/AztecOO.h:44,
>      from trilinos.hpp:14,
>      from NML_ITLLinearSolver.C:13:
> <installation>/include/az_f77func.h:103:1: warning: this is the location 
> of the previous definition
> 
> --> How I "solved" compilation problem 1: put ifndef-endif pair around 
> both defines in Teuchos_config.h
> 
> --> Compilation problem 2:
> 
> trilinos.hpp:66: error: ISO C++ forbids declaration of 
> 'MultiLevelPreconditioner' with no type
> trilinos.hpp:66: error: invalid use of '::'
> trilinos.hpp:66: error: expected ';' before '*' token
> 
> --> How I "solved" compilation problem 2: included ml_config.h in 
> <installation>/include/ml_MultiLevelPreconditioner.h, so that "#if 
> defined(HAVE_ML_EPETRA) && defined(HAVE_ML_TEUCHOS)" would work properly. 
> However, such correction caused extra redefinition problems like in 
> problem 1, "solved" again with ifndef-endif pairs.
> 
> --> Once the compilation problems were solved, linking phase worked with 
> libraries "-laztecoo -lml -lifpack -lepetra -lteuchos -lepetraext". And 
> the executable worked properly as well.
> 
> /////////////////    Question     ////////////////////
> 
> --> Any ideas if this is a problem of the library or a problem of my 
> specific installation?
> 
> My script for configuration reads like this:
> 
> export CC=/usr/bin/mpicc
> export CXX=/usr/bin/mpiCC
> ./configure --prefix=$HOME/Desktop/trilinos-8.0.3/installation 
> --enable-mpi --enable-epetra -enable-teuchos --enable-aztecoo --enable-ml 
> --enable-didasko
> 
> Thanks in advance,
> 
> Ernesto.
> 
> 
> 
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