[petsc-dev] Is ./configure --help broken?

[Matthew Knepley]

On Fri, Mar 16, 2018 at 2:20 PM, Jed Brown <jed at jedbrown.org> wrote:

> Matthew Knepley <knepley at gmail.com> writes:
>
> > On Fri, Mar 16, 2018 at 1:27 PM, Jed Brown <jed at jedbrown.org> wrote:
> >
> >> Matthew Knepley <knepley at gmail.com> writes:
> >>
> >> > On Fri, Mar 16, 2018 at 1:17 PM, Jed Brown <jed at jedbrown.org> wrote:
> >> >
> >> >> Matthew Knepley <knepley at gmail.com> writes:
> >> >>
> >> >> > I agree. We should remove all code (about 2/3 of it) which does a
> >> >> > hierarchy of communicating dicts (the original design). That would
> >> >> > make everything simple.  No threads, no parents, etc. We leave in
> the
> >> >> > help the way we want it, types for args, etc. One thing its notably
> >> >> > missing, and that PETSc Options are missing, is listing the thing
> that
> >> >> > set the option (default, command line, code, env).
> >> >>
> >> >> Does RDict even need to be persistent?  Who all reads it?  I wonder
> if
> >> >> an existing human-readable file would be sufficient instead?
> >> >>
> >> >
> >> > I think we should persist the entire set of options used to configure
> for
> >> > later
> >> > interrogation, however we have not done that much so far.
> >>
> >> CONFIGURE_OPTIONS is written to petscvariables and printed by make info.
> >> I think fewer duplications is desirable.
> >>
> >
> > This gets into a separate discussion. I think Python info is more useful
> > since its
> > directly visible to scripts we might write.
>
> Just call your Python parsing function.


Parse a makefile to get info? This is too convoluted for my first choice.


> But this gets back to my earlier question: who needs to read RDict.db and
> for what purpose?
>

1) We read this to get the configure modules during install and other post
configure operations.

2) I would like us to read RDict.db to get the original configure
environment

   Matt

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

https://www.cse.buffalo.edu/~knepley/ <http://www.caam.rice.edu/~mk51/>
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