Coming back to dealii after a long time

[Wakil Sarfaraz]

Hi All,

I am coming back to dealii after about 5 years. I installed version 9.2 of dealii release on Mac OS Catalina version 10.15.7.

I followed the instructions including setting up the xcode command line tools, downloading the dmg file and etc.

As I attempted to compile step-1.cc, I get an error at the last "make run" step:

bash-3.2$ cmake .

-- Autopilot invoked

-- Run   $ make info  to print a detailed help message

-- Configuring done

-- Generating done

-- Build files have been written to: /Applications/deal.II.app/Contents/Resources/examples/step-1

bash-3.2$ make run

[ 66%] Built target step-1

[100%] Run step-1 with Debug configuration

make[3]: *** [CMakeFiles/run] Illegal instruction: 4

make[2]: *** [CMakeFiles/run.dir/all] Error 2

make[1]: *** [CMakeFiles/run.dir/rule] Error 2

make: *** [run] Error 2

Any help will be appreciated, thanks.

Wakil,

[Timo Heister]

Hi Wakil,

> make[3]: *** [CMakeFiles/run] Illegal instruction: 4

This is due to the library (or a dependency) having been compiled on a
newer processor architecture than the one you are using. Can you
please check that you use the latest dealii-9.2.0-v3.dmg from
https://www.dealii.org/download.html ? I think we fixed this issue a
while ago.

If this is the case, what kind of processor/mac do you have?

--
Timo Heister
http://www.math.clemson.edu/~heister/

[Wakil Sarfaraz]

Hi Timo,

Thanks for getting back on this.

I just checked, yes I have installed 9.2.0-v3.dmg version of dealii.

However, I installed it before upgrading my Mac OS from Mojave 10.14.6 to Catalina 10.15.7.

Do you think this could be the reason for the error?

I am going ahead to reinstall the 9.2.0-v3.dmg from scratch on the upgraded OS, hopefully this will resolve the issue.

Here are the details of the machine:

Processor: 2.9 GHz Dual-Core Intel Core i7

Memory: 8 GB 1600 MHz DDR3

Best regards,

Wakil

 

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--------------------------------------------------------------------------------------------------

Wakil Sarfaraz (PhD)

Founder and Consultant @ MMCESP

--------------------------------------------------------------------------------------------------

[Timo Heister]

> However, I installed it before upgrading my Mac OS from Mojave 10.14.6 to Catalina 10.15.7.
> Do you think this could be the reason for the error?

I doubt it, but I am not that familiar with the OSX side of things.

> but my xcode version is still version 10, do you think this matters?

I also think that this doesn't matter and does not explain the error.

> Processor: 2.9 GHz Dual-Core Intel Core i7

That must be a quite old machine and might explain the issues you
have. If the current .dmg does not work, I fear you will need to
install deal.II in a different way. See
https://github.com/dealii/dealii/wiki/Getting-deal.II for some
guidance.