The source of SiMKit is delivered in a tar file, from which you can build your own SiMKit libraries. If you want to use the provided examples, please make sure that you compile on a system that supports Fortran 77 (note that from release package 4.6 and up, the examples are not provided anymore). The SiMKit interface documentation is available in the tar file in doc/txt/simkitInterfaceDescription.pdf.
Warning: Be careful with using environment variables starting with LD_ in combination with SiMKit. Due to the way the adapter and model libraries interact environment variables that influence the behavior of the system loader can influence the working of the libraries. E.g. when the LD_BIND_NOW environment variable is set, the model library cannot be loaded because of an unresolved external.
Differences in source code between different versions must be derived from the source code for these versions. For this purpose, several versions of the source are provided. A simple way of generating differences between all files in two directory trees is “diff -rup”.