update-alternatives --install /usr/bin/gfortran gfortran /usr/bin/gfortran-5 20
\end{lstlisting}
+
+As of 2020-01 for OpenSuSE-tumbleweed you need the following packages to
+successfully install root, the stream framework, dabc and go4:
+
+\begin{lstlisting}[label=,caption=Tumbleweed Prerequisites at of 2020-01]
+
+zypper install git bash cmake gcc-c++ gcc binutils python libXpm-devel
+xorg-x11-devel libXext-devel gcc-fortran libopenssl-devel pcre-devel Mesa
+glew-devel pkgconf-pkg-config libmariadb-devel fftw3-devel cfitsio-devel
+graphviz-devel libdns_sd avahi-compat-mDNSResponder-devel openldap2-devel
+python-devel libxml2-devel krb5-devel gsl-devel chromium libQt5Gui-devel
+libqt5-qtwebengine-devel libpng16-devel
+\end{lstlisting}
+
Now you can open a shell and make a full system update. Use the package manager \verb+zypper+.
\begin{lstlisting}[label=,caption=Update SUSE]