Requirements for compiling AFD Since AFD is written in C it needs a C compiler with all the headers. Here follows what needs to be done for the different Linux distributions to get AFD compiled with graphical user interface : Ubuntu sudo apt-get install gcc make libmotif-dev libssl-dev libx11-dev libxt-dev libxpm-dev libxaw7-dev RedHat/CentOS/Scientific Linux: su - yum install gcc openmotif-devel openssl-devel libXaw-devel libXpm-devel