Dynamically Load Unresolved Reference (-U)

Note: For PowerLinux platforms only - when developing stub code for C programs, you cannot use this option in conjunction with the -O flag. To work around the issue, either link to the shared object or library containing the code in question, or compile without the -O flag.
Causes any unresolved reference to be treated as a COBOL program to be dynamically loaded. Normally, such references would cause a fatal error at link time when creating a system executable, or cause a fatal error at run-time for callable shared objects.