On Fri, 27 Nov 2009, Satish Balay wrote:

On Fri, 27 Nov 2009, Barry Smith wrote:

...

How does the gnu/autoconf world handle this. If you have two gnu/autoconf installed packages how can you tell they are compatible? You should use the same type of mechanism they use. (what?, they don't have such a mechanism? Well then that is a limitation of the --prefix model and you have to live with that).

The issue is not what the prefix model dictates. The issue is: do slepc/petsc4py support both modes of install similar to PETSc. If not why does PETSc need PETSC_ARCH for a prefix install? [if we are so pure with supporting gnu/autoconf model?].

I read the comment slightly out of context - please ignore.. [now I see you are refering to the "unique-identifier" as a sanity check issue] satish