[petsc-dev] reminder never use #include "mylocalinclude.h" in PETSc source

[Farshid Mossaiby]

Dear PETSc team,
 
I have been recently reading about SCons, www.scons.org. May I know how does it compare to your other options? They claim that their build system is completely portable and coded in pure python. We are in process of preparation for a new project, so I have been following your discussions on build systems and revision control softwares.
 
Best regards,
Farshid Mossaiby

--- On Tue, 5/4/10, Matthew Knepley <knepley at gmail.com> wrote:


From: Matthew Knepley <knepley at gmail.com>
Subject: Re: [petsc-dev] reminder never use #include "mylocalinclude.h" in PETSc source
To: "Jed Brown" <jed at 59a2.org>
Cc: "For users of the development version of PETSc" <petsc-dev at mcs.anl.gov>
Date: Tuesday, May 4, 2010, 9:52 PM


On Tue, May 4, 2010 at 11:51 AM, Jed Brown <jed at 59a2.org> wrote:



On Tue, 4 May 2010 11:37:14 -0500, Matthew Knepley <knepley at gmail.com> wrote:
> I see. Yes, it currently uses the makefile organization. This is the
> kind of metadata that Barry would like in a DB rather than in
> makefiles.

It would be easy to convert between being spread out in the makefiles
and being held in some central location.  For instance, something like
builder.py, run at the end of configuration time, could instead of
building the project, write a single tupfile [1] for all of PETSc, and
then we could rejoice with fast correct builds, even after
reconfiguring.

I think the metadata itself belongs with the implementations (more or
less where it is currently) unless we are actually working with an
image-based system (which does not look likely in the near future).



It looks like tup only has a Linux daemon, so it would run the same as make
everywhere else. That does not seem like a strong enough case to use it. Why
not just write the same thing in portable Python? We do need to run everywhere.


   Matt
 
Jed

[1] For those who not in the know: http://gittup.org/tup/make_vs_tup.html-- 
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



      
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