[petsc-dev] buildsystem package dependencies

[Matthew Knepley]

On Tue, Apr 5, 2011 at 11:20 AM, Satish Balay <balay at mcs.anl.gov> wrote:

> Not sure I understand. If I say 'mpi depends on mpe' - then the link line
> is:
>
> -lhypre -lmpi -lmpe
>
> But thats incorrect usage - and not what I want.. The correct usage is:
> -lhypre -lmpe -lmpi
>
> The issue comes up with -llmpe - which traps MPI_xx functions - and does
> some
> logging - and then calls MPI_xx functions from -lmpi. i.e usage is:
>
> -lhypre -llmpe -lmpe -lmpi


Right, but this MPE package is changing the MPI interface. All those other
packages,
like Hypre, depend on MPI. MPI depends on MPE, but the MPE module may modify
the MPI lib to be '-lmpe -lmpi'. I do not see another way to do this.

   Matt


>
> Satish
>
> On Tue, 5 Apr 2011, Matthew Knepley wrote:
>
> > Yes, Lisandro is correct.
> >
> >    Matt
> >
> > On Tue, Apr 5, 2011 at 11:05 AM, Lisandro Dalcin <dalcinl at gmail.com>
> wrote:
> >
> > > On 5 April 2011 12:54, Satish Balay <balay at mcs.anl.gov> wrote:
> > > >
> > > > Matt,
> > > >
> > > > Is it possible to specify package dependencies such that the
> following
> > > happens:
> > > >
> > > > [all mpipackages like -lhypre] [-lmpe] -lmpi
> > > >
> > > > Currently I have:
> > > > mpe: depends on mpi
> > > > hypre: depends on mpi
> > > >
> > > > And configure can do:
> > > > -lmpe -lhypre -lmpi
> > > >
> > > > But I want to say:
> > > > mpe: depends on mpi, but before all other mpi packages.
> > > >
> > >
> > > >From a library dependency POV, it is the other way around: MPI depends
> > > on MPE, but the dependency is optional.
> > >
> > >
> > >
> > > --
> > > Lisandro Dalcin
> > > ---------------
> > > CIMEC (INTEC/CONICET-UNL)
> > > Predio CONICET-Santa Fe
> > > Colectora RN 168 Km 472, Paraje El Pozo
> > > 3000 Santa Fe, Argentina
> > > Tel: +54-342-4511594 (ext 1011)
> > > Tel/Fax: +54-342-4511169
> > >
> >
> >
> >
> >
>
>


-- 
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
lead.
-- Norbert Wiener
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