Request related to SLEPc

Matthew Knepley knepley at
Fri Dec 12 10:45:02 CST 2008

I need to understand what you use this variable for. If you are just
linking, then you
do not need it. If you want configure information, then you need it in order
to get
anything, so specifying in a file will not help.


On Fri, Dec 12, 2008 at 9:01 AM, Jose E. Roman <jroman at> wrote:

> SLEPc's uses the value of $PETSC_ARCH in order to setup
> everything for installation. We never had a $SLEPC_ARCH variable because our
> does not add platform-dependent functionality.
> Now the problem comes when PETSc has been configured with --prefix and
> installed with make install. In that case, $PETSC_ARCH is no longer
> available and SLEPc's is in trouble.
> A simple workaround would be that PETSc's configure (or make install) would
> add a variable (e.g. PETSC_ARCH_NAME) in file petscvariables. We parse this
> file so the arch name would be readily available even if $PETSC_ARCH is
> undefined.
> Can someone do this? Other solutions are welcome.
> Thanks,
> Jose

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