For a variety of reasons including severely limited system memory or concerns about runtime system overhead, it is sometimes necessary or desirable to reduce the size of the runtime by removing unused elements. This is accomplished by modifying the special file "config85.c" and then relinking the runtime. Of course, any component removed from the runtime is no longer supported by the system. Programs that attempt to use those components may terminate in unexpected ways.
You can find the file "config85.c" in the "lib" subdirectory of your ACUCOBOL-GT installation. Instructions on how to relink the runtime, as well as specifications for the C compiler that is required for relinking on each platform, are described in section C.5, Appendix C, Book 4, "Appendices."
"config85.c" supports the removal (or re-inclusion) of the following runtime components:
Comments in "config85.c" describe how to modify the file and indicate the approximate reduction in space that will result from the removal of each component.