How to compile: If you have EiffelStudio installed, open EiffelStudio and add a new project. Then select the .ecf file provided with the example. For the commandline compilation, open the directory of the example in a console and type: ec -config random.ecf -c_compile -finalize The generated executable is 'EIFGENs/hello_world/F_code/random.exe'. Gobo tools are not configured to work with this example.