I want to thanks all the people helping GNU and the Free Software Foundation for all the free software available to all of us.
In order to compile the SSWF library and tools, you will need the following free tools and libraries:
Newer versions of SSWF have a lexical.c++ file which removed the dependency on flex and added more flexibility for internationalization. Then a bit later a better flex with full internationalization support was coming out. 8-)