To run FreeRouting a java runtime enviourment is needed next to the FreeRouting executable. Many system should already have it installed by default. If it is missing on your system, you can download it from the Oracle Homepage.
The easiest way to install the FreeRouting executable is to install the LayoutEditor package. It includes a compiled ready to use FreeRouting in the bin folder of the LayoutEditor package. To start the FreeRouting application just press on the freeRouting.jar file. Alternative you can download the FreeRouting source files from this web page and compile it with the Java Developer Tools.
The steps to use Eagle with freeRouting are: