[petsc-dev] [Suggestion] Configure QOL Improvements

[Smith, Barry F.]

https://www.youtube.com/watch?v=NVopDink4uQ

https://gitlab.com/petsc/petsc/merge_requests/2207


> On Oct 23, 2019, at 8:34 PM, Matthew Knepley via petsc-dev <petsc-dev at mcs.anl.gov> wrote:
> 
> On Wed, Oct 23, 2019 at 5:08 PM Faibussowitsch, Jacob <jfaibussowitsch at anl.gov> wrote:
> I think Jed is referring to the fact that configure appears to do all of these checks after doing the compiler,
> 
> How would you verify that Z works without the compiler? Again, this whole discussion is not listening.
> 
>   Matt
>  
> MPI, MathEnv, etc which take a long time. The change would be to check missing external library dependencies before even doing the compiler checks.
> 
> Best,
> 
> Jacob
> 
>> On Oct 23, 2019, at 4:03 PM, Matthew Knepley <knepley at gmail.com> wrote:
>> 
>> On Wed, Oct 23, 2019 at 4:59 PM Jed Brown <jed at jedbrown.org> wrote:
>> Matthew Knepley <knepley at gmail.com> writes:
>> 
>> > That is an unreliable check for Z. You would not eliminate the case
>> > where you give --with-Z, but the check fails, so Z is not available,
>> > but you do not find out until checking X or Y.
>> 
>> You can verify that Z works in a fraction of a second, but building X
>> may take minutes.  Work bottom up, verify everything that is given
>> before building anything.
>> 
>> That is exactly what we do now. What are you talking about?
>> 
>>   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/
> 
> 
> 
> -- 
> 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/