[i.linch]

Dear all,

I am trying to reactivate some self-made rather old OF solver, originally implemented with OF 2.1.x.


My rough plan is first to compile OF 2.1.x to ensure the solver is working prior to thinking of re-implementation the solver in a up-to-date OF framework.


Since my current system is Ubuntu 22.04 and since OF 2.1 is pretty old, I experience several complications. Several per-requisite packages available for Ubuntu 22.04 seem to be way too modern for OF 2.1. Since I couldn't find precompiled packages old enough for OF 2.1, I decided to locally compile the required packages. Therefore I used following list: https://github.com/OpenFOAM/ThirdParty-2.1.x


I tried to compile GCC 4.6.1 and also the latest GCC-4 version 4.9.4 and both wasn't successful.


Trying to compile GCC 4.6.1 failed on my system with following error:

In file included from /home/ilya/OpenFOAM/ThirdParty-2.1.x/gcc-4.6.1/libgcc/../gcc/unwind-dw2.c:333:0:
/home/ilya/OpenFOAM/ThirdParty-2.1.x/gcc-4.6.1/libgcc/../gcc/config/i386/linux-unwind.h: In function ‘x86_64_fallback_frame_state’:
 /home/ilya/OpenFOAM/ThirdParty-2.1.x/gcc-4.6.1/libgcc/../gcc/config/i386/linux-unwind.h:54:47: error: dereferencing pointer to incomplete type

Does anyone have an idea, how to overcome this issue?


Trying to compile GCC 4.9.4 as an alternative failed with following error:

checking for gmp.h... no
 configure: error: gmp.h header not found

I do not really understand the header error since gmp was already locally compiled at this moment, but the GCC installer seems to look for system-gmp intead of the local one (s. previous log enties):

---------------
Already built: gmp-5.0.2
---------------
Already built: mpfr-3.0.1
---------------
Already built: mpc-0.9
---------------
Starting build: gcc-4.9.4

+ /home/ilya/OpenFOAM/ThirdParty-2.1.x/gcc-4.9.4/configure --prefix=/home/ilya/OpenFOAM/ThirdParty-2.1.x/platforms/linux64/gcc-4.9.4 --with-gmp=/home/ilya/OpenFOAM/ThirdParty-2.1.x/platforms/linux64/gmp-5.0.2 --with-mpfr=/home/ilya/OpenFOAM/ThirdParty-2.1.x/platforms/linux64/mpfr-3.0.1 --with-mpc=/home/ilya/OpenFOAM/ThirdParty-2.1.x/platforms/linux64/mpc-0.9 --with-pkgversion=OpenFOAM --enable-languages=c,c++ --enable-__cxa_atexit --enable-libstdcxx-allocator=new --with-system-zlib


....

checking for the correct version of gmp.h... yes
...

checking for the correct version of the gmp/mpfr/mpc libraries... yes
...

checking which gmp to use... system
checking gmp.h usability... yes
...
checking for gmp.h... no
configure: error: gmp.h header not found

I would appreciate any help on getting OF 2.1 run.

Cheers

[überschwupper]

Good morning,


I have tried this with Ubuntu 20.4 and wasnt able to solve that. It was really time consuming and the outcome was nothing.



One thing I would give a try, is to use a virtual machine with an older ubuntu version and installing OF on that version

[Kummi]

I used OpenFOAM 2.1.1 in Ubuntu 16.04 and it worked fine. Versions higher than 16.04 cause serious compatibility issues.*
Install compatible Ubuntu versions for OF 2.1.x in the virtual box.*

[i.linch]

Thanks a lot überschwupper and Kummi,


Could you please also explain what are the advantages and the disadvantages of installing 16.04 in a virtual machine versus usual installation on a separate partition?


Cheers

[Kummi]

Originally Posted by i.linch

Thanks a lot überschwupper and Kummi,


Could you please also explain what are the advantages and the disadvantages of installing 16.04 in a virtual machine versus usual installation on a separate partition?


Cheers

In order to use OpenFoam 2.1.x, ubuntu 16.04 and lower versions are compatible.*

Assuming you're running Windows or a Linux-based higher-version operating system on your computer. So, instead of installing and rebooting Ubuntu 16.04, install a software called Virtual Box. This software is a separate machine that helps you install any OS within the software without affecting your main computer. However, you need to allocate some memory space and RAM for it.

Thank you

[überschwupper]

Both options have their advantages and disadvantages, you can find them via a quick google research.

Lower ubuntu versions may be out of support and there are some security risks because of that. I would go for a VM set up, especially when you are calculating on a different device. Far more comfortable and you are able to work on your main OS with your applications

[samaraseeri]

You can install openfoam and gcc with apt-get see https://openfoam.org/download/8-ubuntu/. beset