[petsc-dev] Fwd: cmake issue

[Barry Smith]

On Dec 15, 2010, at 8:28 PM, Matthew Knepley wrote:

> On Wed, Dec 15, 2010 at 12:59 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:
> 
>> Jed wrote
>> 
>> As for the other issue (CC="gcc -m32" and such), would it be acceptable to make all of BuildSystem (instead of just the cmake part) convert that to, effectively, CC=gcc CFLAGS="-m32" LDFLAGS="-m32"?
>>  
> 
>   Matt and Satish,
> 
>   So if the user does --with-cc="gcc options" would it be ok if configure stripped those options from cc and stuck them into the CFLAGS and LDFLAGS variables of configure automatically? Or is there a problem with that>?
> 
> I see at least one problem with this, namely that 'options' would need to be in CPPFLAGS if the C compiler
> was being used as the preprocessor. I do not like this because the user told us what they wanted. If they
> wanted options in CFLAGS, its jsut as easy to put it there.

   Not true. I it is easy for me to remember --with-cc="gcc -m32"  but not easy for me to remember --with-cc=gcc CFLAGS="-m32" LDFLAGS="-m32"  and CPPFLAGS="-m32" !
   
   Note that configure/make handles what I do just fine but Jed's cmake had trouble and suggested changing configure to move the variables.

  Barry

> 
>    Matt
>  
>   Barry
> 
> 
> 
> 
> 
> -- 
> 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