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

[Matthew Knepley]

On Thu, Mar 15, 2018 at 9:30 AM, Satish Balay <balay at mcs.anl.gov> wrote:

> On Thu, 15 Mar 2018, Stefano Zampini wrote:
>
> > it seems we can no longer print the available configure options in master
> >
> > [szampini at localhost petsc]$ ./configure --help
> > ============================================================
> ===================
> >              Configuring PETSc to compile on your system
> >
> > ============================================================
> ===================
>
> Hm - its just taking a long time.. The trigger is this change.
>
> >>>>>>>>
> 603e7a67219475153ffb5c1693e4f8ee41f93af7 is the first bad commit
> commit 603e7a67219475153ffb5c1693e4f8ee41f93af7
> Author: Satish Balay <balay at mcs.anl.gov>
> Date:   Thu Mar 8 20:02:30 2018 -0600
>
>     rdict: attempt to workarround (not always reproduceable) error
>
>     *** Using PETSC_DIR=/home/sandbox/petsc/petsc.next
> PETSC_ARCH=arch-linux-opt-misc ***
>         No cached configure in RDict at /home/sandbox/petsc/petsc.
> next/arch-linux-opt-misc/lib/petsc/conf/RDict.db
>
> :040000 040000 654ea5265523cbcbb50b1104be63b5c7899b4478
> 01384d9a268f7c89859c64f9f091bee066d47cda M      config
> <<<<<<<<<<<<<<
>
> But I see script.py has code:
>
>    if self.hasHelpFlag():
>       self.argDB.readonly = True
>
>
> This code is not getting triggered '-h'/--help - I don't know if this is
> the correct behavior. Matt?
>

Satish, I don't think this can be our fix. This writes to disk every time a
value is changed. We need to know
why the forced write at the end of configure was not working. This makes
everything forced.

I will look at why readonly is not working.

  Matt


> Same slowdown with --with-packages-dir= [which behaves as help in one
> case - and no-help in the other case].. And we have this chane to fix
> its its misbehavior with --prefix
>
> 6ffe0648adde44dfc4a394659acd0d3e40176240
>
> Satish
>



-- 
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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