[Trilinos-Users] Trilinos-PETSc Interface

[Jed Brown]

On Sun, 21 Nov 2010 11:40:49 -0600, Nunion <m.skates82 at gmail.com> wrote:
> Hello Jonathan,
> 
> I am now enabling MPI in my configuration script. with the MPI_BASE_PATH set
> to my MPI base directory.  When I get to "make" I am getting the following
> errors, there seems to be some redefinition stuff going on?  What is
> attached is a subset of the errors.  They are all dealing with
> EpetraExt_PETScAIJMatrix
> 
> [ 49%] Built target Tpetra_PowerMethodExample
> [ 50%] Built target Tpetra_Tpetra_PowerMethod_CopyFiles
> [ 50%] Built target Tpetra_PowerMethodFileExample
> [ 50%] Built target Tpetra_PowerMethodVbrExample
> [ 50%] Building CXX object
> packages/epetraext/src/CMakeFiles/epetraext.dir/petsc/EpetraExt_PETScAIJMatrix.cpp.o
> /home/walker/Desktop/PETSc/_NEW/petsc-3.1-p5/include/petscviewer.h: In
> function ‘PetscErrorCode PetscViewerCreate(_p_PetscViewer**)’:
> /home/walker/Desktop/PETSc/_NEW/petsc-3.1-p5/include/petscviewer.h:117:
> error: declaration of C function ‘PetscErrorCode
> PetscViewerCreate(_p_PetscViewer**)’ conflicts with
> /home/walker/Desktop/PETSc/_NEW/petsc-3.1-p5/include/petscviewer.h:116:
> error: previous declaration ‘PetscErrorCode PetscViewerCreate(MPI_Comm,
> _p_PetscViewer**)’ here
> /home/walker/Desktop/PETSc/_NEW/petsc-3.1-p5/include/petscviewer.h:117:
> error: ‘PetscErrorCode PetscViewerCreate(_p_PetscViewer**)’ was declared
> ‘extern’ and later ‘static’
> /home/walker/Desktop/PETSc/_NEW/petsc-3.1-p5/include/petscviewer.h:116:
> error: previous declaration of ‘PetscErrorCode PetscViewerCreate(MPI_Comm,
> _p_PetscViewer**)’
> /home/walker/Desktop/PETSc/_NEW/petsc-3.1-p5/include/petscviewer.h: In
> function ‘PetscErrorCode PetscViewerCreate(_p_PetscViewer**)’:
> /home/walker/Desktop/PETSc/_NEW/petsc-3.1-p5/include/petscviewer.h:117:
> error: invalid conversion from ‘int’ to ‘_p_PetscViewer**’
> /home/walker/Desktop/PETSc/_NEW/petsc-3.1-p5/include/petscviewer.h:117:
> error: too many arguments to function ‘PetscErrorCode
> PetscViewerCreate(_p_PetscViewer**)’

The most likely cause of these errors is including PETSc headers using

  extern "C" {
  #include <petscviewer.h>
  }

causing the PetscPolymorphicSubroutine macro to be expanded within an
extern "C" block.  Wrapping the include statement should not be done
since it is handled internally.

Jed