The installation requires system libraries that are not necessarily installed by default, but they are available through the package manager. Most of the additional libraries are required to run the computational programs in parallel on multiple processors or clusters, and to run the graphical programs (mainly RobEM). Example of libraries needed to be installed on some Linux distributions:
openmpi (mpich2 as an alternative) openmpi-devel (mpich2-devel as an alternative)
libX11 libX11-devel openmotif openmotif-devel libSM libSM-devel libICE libICE-devel libXext libXext-devel libXmu libXmu-devel libXp libXp-devel libXt libXt-devel
gfortran
openmpi-bin libopenmpi-dev
libmotif-dev libxt-dev
During the installation procedure you can get the following error messages
/usr/bin/ld: cannot find -lXp /usr/bin/ld: cannot find -lXext /usr/bin/ld: cannot find -lXmu
even if the libraries have been installed. This is because sometimes the generic links to these libraries are missing. In this case you need to go to the directory where the libraries are (/usr/lib/x86_64-linux-gnu in the latest Ubuntu 64-bit releases) and create the symbolic links (you need administration permissions). For example
ln -s libXmu.so.6.2.0 libXmu.so ln -s libXp.so.6.2.0 libXp.so ln -s libXext.so.6.4.0 libXext.so
with the names reflecting the current installed version.