[Dune] conflicting defines for SuperLU ?

[Benedikt Oswald]

Hello Oliver, thanks for the hint to the fly spray, that explains it. Greetings, Benedikt

On Nov 24, 2011, at 4:23 PM, Oliver Sander wrote:

> This is more or less correct.  We are even aware that there is a lack of
> documentation for this: see FS 631.  But nobody volunteered to write any, yet.
> 
> cheers,
> Oliver
> 
> Am 24.11.2011 15:02, schrieb Bård Skaflestad:
>> On Thu, 2011-11-24 at 14:42 +0100, Benedikt Oswald wrote:
>>> Hello Dune, I just stumbled over the fact that when compiling Dune
>>> with
>>> SuperLU support, i.e. using something like --with-superlu=…
>>> then HAVE_SUPERLU is defined to be
>>> 
>>> 
>>> /* Define to ENABLE_SUPERLU if SUPERLU is found */
>>> #define HAVE_SUPERLU ENABLE_SUPERLU
>>> 
>>> 
>>> 
>>> 
>>> in the  config.h file
>>> 
>>> 
>>> But, e.g. in amg.hh there is the praam #if HAVE_SUPERLU
>>> 
>>> 
>>> so is it the case that, since HAVE_SUPERLU is defined
>>> to ENABLE_SUPERLU
>>> and not 1, that part of the code is then not compiled in ?
>> 
>> I'll defer to others to answer authoritatively, but I believe that's
>> more or less as intended by the design.  The reasoning is, I believe,
>> that the SuperLU feature should not be automatically enabled when it's
>> found on a particular computer system.  In other words, the developer
>> using the ISTL must specifically enable SuperLU by including the
>> $(SUPERLU_CPPFLAGS) in the program's (or library's) _CPPFLAGS primary
>> (or globally using the AM_CPPFLAGS primary).
>> 
>> The $(SUPERLU_CPPFLAGS) specify, among other things such as include
>> paths, the string "-DENABLE_SUPERLU=1" on systems providing SuperLU.
>> 
>> 
>> Sincerely,
> 
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Benedikt Oswald, Dr. sc. techn., dipl. El. Ing. ETH, www.psi.ch, Computational Accelerator Scientist, http://amas.web.psi.ch
Paul Scherrer  Institute (PSI), CH-5232 Villigen, Suisse, benedikt.oswald at psi.ch, +41(0)56 310 32 12

"Passion is required for any great work, and for the revolution passion and audacity are required in big doses.",
 Ernesto 'Che' Guevara, Letter to his parents.
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