dolfin team mailing list archive

["Garth N. Wells" <g.n.wells@xxxxxxxxxx>]

Sorry, I think I had it wrong. I assumed that you were adding
PETSC_EXTERNAL_CFLAGS. You will of course need the PETSc includes. Just
make sure that header files for external PETSc libraries (Hypre, BLAS,
etc) are not being included. The PETSc flags should be returned by running

  make -f petsc.conf get_petsc_include

from the top directory.

Garth

> 
> Ok, I didn't know that. Maybe I've misunderstood something, but the
> demos didn't compile for me. For example, in the Poisson demo
> src/demo/pde/poisson/Makefile:
> 
> CFLAGS  = `dolfin-config --cflags`
> ...
> $(DEST): $(OBJECTS)
>          $(LINK) -o $@ $(OBJECTS) $(CFLAGS) $(LIBS)
> 
> If CFLAGS doesn't include any include paths (to PETSc for instance),
> then it won't be able to find the headers for library dependencies.
> 
> Did this work for you before I changed it? It seems it was changed in
> this changeset:
> 
> http://www.fenics.org/hg/dolfin?cs=866f7f5da06f
> 
> I assumed this was an oversight since uBlas is standard now instead of
> PETSc.
> 
>   Johan
>