UMFPACK Proble

[hussan zeb]

Hello everyone  I am currently  using  Deal II 9.5.1 when i try to run Step-57 with cmake . get the error  '' cmake
CMake Error at CMakeLists.txt:41 (message):
 

  Error! This tutorial requires a deal.II library that was configured with
  the following options:

      DEAL_II_WITH_UMFPACK = ON

  However, the deal.II library found at /home/hussan/deal was configured with
  these options:

      DEAL_II_WITH_UMFPACK = OFF

  This conflicts with the requirements.


-- Configuring incomplete, errors occurred!

See also "/home/hussan/deal/examples/step-57/CMakeFiles/CMakeOutput.log".

How can fix it

[blais...@gmail.com]

It seems your deal.II was configured without UMFPACK.

Can you give us more information about which operating system you are using and under which conditions you are installing the library? This would greatly help us helping you debug.

Most likely you will need to reinstall deal.II with UMFPACK enabled. 

[hussan zeb]

Thank you for your response

I tried to reinstall the deal ii but again give the same error how can fix it  Error! This tutorial requires a deal.II library that was configured with

  the following options:

      DEAL_II_WITH_UMFPACK = ON

  However, the deal.II library found at /home/hussan/deal was configured with
  these options:

      DEAL_II_WITH_UMFPACK = OFF

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--

Hussan Zeb
Department of  Mathematics
Hazara University

[hussan zeb]

Thank you for your response 

 , I use the operating system (Ubuntu 22.04.3 LT) with these specifications ( Lenovo ThinkPad L590,RAM,8.0 GiB, Intel® Core™ i5-8365U CPU @ 1.60GHz × 8,) 

[Wolfgang Bangerth]

On 9/27/23 07:41, hussan zeb wrote:
>
> I tried to reinstall the deal ii but again give the same error how can fix it
> Error! This tutorial requires a deal.II library that was configured with
>   the following options:
>
>       DEAL_II_WITH_UMFPACK = ON
>
>   However, the deal.II library found at /home/hussan/deal was configured with
>   these options:
>
>       DEAL_II_WITH_UMFPACK = OFF

Hussan:
when you configure deal.II with cmake, it shows a summary of configuration
options at the end. Can you copy-paste that into an email and also attach the
file detailed.log that cmake produces?

In the end, cmake probes the properties of your system and decides that (i) it
cannot find a version of UMFPACK on your system, (ii) it also cannot find the
necessary requirements to build its own version of UMFPACK. The latter
typically happens if your system does not have BLAS and LAPACK installed. You
may want to install these packages through the Ubuntu package manager.

Best
WB

--
------------------------------------------------------------------------
Wolfgang Bangerth email: bang...@colostate.edu
www: http://www.math.colostate.edu/~bangerth/