If your applications don't interface with any special library routines, you don't need to relink your runtime. If, on the other hand, your applications interface with C-ISAM or other special library routines, you must relink the included runtime with these special routines. To execute the link, you must have the appropriate C compiler for your host machine:
For C-ISAM, follow the relinking procedure described in the add-on module's documentation.
See Working with C and C++ Programs in A Guide to Interoperating with ACUCOBOL-GT for other special library routines.