Install Foamextend4.1 in ubuntu22.04

Because gcc 7.0 no longer support in ubuntu 22.04 or higher so that the installing of Foamextend 4.1 faces trouble.

https://openfoamwiki.net/index.php/Installation/Linux/foam-extend-4.1/Ubuntu04

So in this blog post I will try to give full commands to install foamextend4.1 in Ubutu22.04. Lets run the following:

Clone foamextend4.

cd ~
mkdir foam
cd foam
git clone git://git.code.sf.net/p/foam-extend/foam-extend-4.1 foam-extend-4.1

Set environment variables

cd ~/foam/foam-extend-4.1
source etc/bashrc
 
echo "alias fe41='source \$HOME/foam/foam-extend-4.1/etc/bashrc'" >> $HOME/.bashrc

Add the the command in file “/etc/apt/source.list” so that os can access the gcc-7, g++ 7 and gfortran -7.

deb [arch=amd64] http://archive.ubuntu.com/ubuntu focal main universe

Update system again

sudo apt update

The same commands as in the official tutorial website:

sudo apt-get install git-core build-essential binutils-dev cmake flex \
zlib1g-dev libncurses5-dev curl bison \
libxt-dev rpm mercurial graphviz python python-dev  gcc-7 g++-7

Make sure the system will use gcc 7 instead of default gcc (which is gcc 11) by:

sudo update-alternatives –install /usr/bin/gcc gcc /usr/bin/gcc-7 7

sudo update-alternatives –install /usr/bin/g++ g++ /usr/bin/g++-7 7

sudo update-alternatives –install /usr/bin/gfortran gfortran /usr/bin/gfortran-7 7

The next command:

cd ~/foam/foam-extend-4.1
 
echo "export WM_CC='gcc-7'"  >> etc/prefs.sh
echo "export WM_CXX='g++-7'"  >> etc/prefs.sh

source etc/bashrc

sed -i -e 's=rpmbuild --define=rpmbuild --define "_build_id_links none" --define=' ThirdParty/tools/makeThirdPartyFunctionsForRPM
sed -i -e 's/gcc/\$(WM_CC)/' wmake/rules/linux64Gcc/c
sed -i -e 's/g++/\$(WM_CXX)/' wmake/rules/linux64Gcc/c++

Now

./Allwmake.firstInstall

Hope this help and please leave comments so that I can help you more!

Have a nice day :))) !