[petsc-dev] BuildSystem optional requirements

[Jed Brown]

On Sun, Jan 1, 2012 at 18:01, Matthew Knepley <knepley at gmail.com> wrote:

> Make a dependency for BOTH and choose one during package configure. What
> else would you do?


I'm not sure I understand how you mean to implement this. Wouldn't it be a
failure if you have a dependency that is not satisfied? Are there any
examples of this, or can you just update MUMPS.py?
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