Compilation of Elmer under Ubuntu

(note: instructions may be out of date)

• Download the source code and create build directory as above

• Install the dependencies sudo apt install git cmake build-essential gfortran libopenmpi-dev libblas-dev liblapack-dev

• Without MPI: ** cmake .. -DWITH_OpenMP:BOOLEAN=TRUE

• With MPI: ** cmake .. -DWITH_OpenMP:BOOLEAN=TRUE -DWITH_MPI:BOOLEAN=TRUE

• With ElmerGUI: ** sudo apt install libqt4-dev libqwt-dev ** cmake .. -DWITH_OpenMP:BOOLEAN=TRUE -DWITH_MPI:BOOLEAN=TRUE -DWITH_ELMERGUI:BOOLEAN=TRUE

• With Elmer/Ice (enabling netcdf and MUMPS): ** sudo apt install libnetcdf-dev libnetcdff-dev libmumps-dev libparmetis-dev ** cmake .. -DWITH_OpenMP:BOOLEAN=TRUE -DWITH_MPI:BOOLEAN=TRUE -DWITH_ElmerIce:BOOLEAN=TRUE -DWITH_Mumps:BOOL=TRUE

• make

• sudo make install

• The executables are in /usr/local/bin folder, you may add this to your PATH if you will

These are more recent instructions on discussion forum for Ubuntu 22.04:

• http://www.elmerfem.org/forum/viewtopic.php?p=28018#p28018

Following, detailed and working instructions to compile and install on Ubuntu 24.04

• Clone the repository and cd into it
  git clone https://github.com/ElmerCSC/elmerfem.git
cd elmerfem

• Install dependencies
  sudo apt install git cmake build-essential gfortran libopenmpi-dev libblas-dev liblapack-dev

As an alternative

• Install all dependencies for complete installation:
  sudo apt install git cmake build-essential gfortran libopenmpi-dev libblas-dev liblapack-dev qtscript5-dev libqt5svg5-dev libqwt-qt5-dev libnetcdf-dev libnetcdff-dev libmumps-dev libparmetis-dev

• Create the build directory inside the repo "elmerfem" and cd into it
  mkdir build
cd build

• Command to create the Makefile, with the basis. No GUI, No MPI, nothing...
  cmake -DWITH_ELMERGUI:BOOL=FALSE -DWITH_MPI:BOOL=FALSE -DCMAKE_INSTALL_PREFIX=<the-path-where-you-want-to-install> ../../elmerfem

• With MPI add the following to the cmake command: ** cmake .. -DWITH_OpenMP:BOOLEAN=TRUE -DWITH_MPI:BOOLEAN=TRUE

• With ElmerGUI, you first need to install the following packages: ** sudo apt install qtscript5-dev libqt5svg5-dev libqwt-qt5-dev then add the following options to the cmake command: cmake .. -DWITH_OpenMP:BOOLEAN=TRUE -DWITH_MPI:BOOLEAN=TRUE -DWITH_ELMERGUI:BOOLEAN=TRUE

• With Elmer/Ice (enabling netcdf and MUMPS), you need to install the following packages: ** sudo apt install libnetcdf-dev libnetcdff-dev libmumps-dev libparmetis-dev Then add the followinf options to the cmake command: cmake .. -DWITH_OpenMP:BOOLEAN=TRUE -DWITH_MPI:BOOLEAN=TRUE -DWITH_ElmerIce:BOOLEAN=TRUE -DWITH_Mumps:BOOL=TRUE

• Do you want to Compile Everything?
  cmake -DWITH_ELMERGUI:BOOL=TRUE -DWITH_OpenMP:BOOLEAN=TRUE -DWITH_MPI:BOOL=TRUE -DWITH_ElmerIce:BOOLEAN=TRUE -DWITH_Mumps:BOOL=TRUE -DCMAKE_INSTALL_PREFIX=<the-path-where-you-want-to-install> ../../elmerfem

• Compile
  make

• Install
  (sudo) make install The executables are in the folder you chose before , you may add this to your PATH if you will, by modifying the file /etc/environment

• Issues with windows without borders? Modify /etc/environment by adding the following line export QT_QPA_PLATFORM="xcb"