Re: [Libmesh-users] Linking with static PETSc libraries

[John P. <pet...@cf...>]

Hi Tim,

The mpich linking problem is sometimes caused because the

${PETSC=5FDIR}/bmake/${PETSC=5FARCH}/petscconf

file does not provide the MPI=5FLIB variable correctly or at all.  This=

can happen when the mpiCC compiler is used to compile petsc (the
default behavior I think).

If this is the problem, one possible fix is to configure
libmesh using these mpi compilers as well, i.e.


CXX=3DmpiCC CC=3Dmpicc F77=3Dmpif77 ./configure


Conversely, one can force petsc to use the non-mpi compilers
during its configuration process, and then this usually correctly
sets MPI=5FLIB.

-John


Tim Kr=F6ger writes:
 > Dear all,
 >=20
 > The problem is solved already.  I added "-lmpich" and=20
 > "-L/opt/mpich/ch-p4/lib" to the link line.  I still don't understand=
=20
 > why this is necessary (in particular, because this directory is=20
 > already contained in $LD=5FLIBRARY=5FPATH), but at least it works no=
w.
 >=20
 > Comments are still welcome, but it's not so urgent any more.
 >=20
 > Best Regards,
 >=20
 > Tim
 >=20
 >=20