[petsc-users] Configure error with PETSc 3.17.4 on Ubuntu 22.04

[Matthew Knepley]

On Fri, Aug 12, 2022 at 1:32 PM David Knezevic <david.knezevic at akselos.com>
wrote:

> Regarding 1.: We're using --download-mumps, so this is the mumps that was
> installed during config. There was no mumps build prior to that. Does that
> change anything?
>

I did not see the build in the log. Can you try removing and reconfiguring?
Then I can see everything.

  Thanks,

     Matt


> Regarding 2.: We need --with-clanguage=cxx since we're also using an
> external C++ library (libMesh). We've been using --with-clanguage=cxx in
> PETSc with libMesh for years...
>
>
>
> On Fri, Aug 12, 2022 at 1:24 PM Matthew Knepley <knepley at gmail.com> wrote:
>
>> On Fri, Aug 12, 2022 at 1:14 PM David Knezevic via petsc-users <
>> petsc-users at mcs.anl.gov> wrote:
>>
>>> I get a configure error when building PETSc 3.17.4 on Ubuntu 22.04. The
>>> configure.log is attached.
>>>
>>> This error seems to only occur when we use --with-clanguage=cxx. We need
>>> to use that object when building with complex numbers.
>>>
>>> Guidance on how to resolve this would be most appreciated.
>>>
>>
>> 1. I think your existing MUMPS build is incompatible (but it is hard for
>> us to tell). Remove it
>>
>>   rm -rf $PETSC_DIR/$PETSC_ARCH/externalpackages/git.mumps
>>
>> and reconfigure
>>
>> 2. You can also use C99 for complex numbers, but your application code
>> might already be using C++.
>>
>>   Thanks,
>>
>>      Matt
>>
>>
>>> Thanks,
>>> David
>>>
>>
>>
>> --
>> 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.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/ <http://www.cse.buffalo.edu/~knepley/>
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