LP
The LP compiler option affects whether a AMODE 31 (31-bit) or AMODE 64 (64-bit) program should be generated with the related language features enabled when compiling COBOL programs.
You can specify the LP option in the ways that you specify other compiler options. However, if you specify the option in a CBL (PROCESS) statement, you can only specify the LP option for the first program. You cannot change the value of the option for subsequent programs in the batch.
- Default
- LP=32
- 32
- Indicates that an AMODE 31 (31-bit) program should be generated with the related language features enabled.
- 64
- Indicates that an AMODE 64 (64-bit) program should be generated with the related language features enabled.
Runtime consideration: With current service applied, Language Environment® supports mixing AMODE 64 and AMODE 31 programs in the same application. However, only dynamic call supports calling a subprogram with different AMODE from the caller, and you need to specify the COBOL runtime option AMODE3164 when running mixed AMODE COBOL programs. For static
CALLs, the binder will issue a message if it encounters mixing addressing modes during external name
resolution. For details, see Dynamic call between AMODE 31 and AMODE 64 programs.
When using the LP=64 compiler option, the compilation process includes a component that runs in POSIX(ON) mode. This implies that there must be an OMVS Segment established in RACF® (or equivalent in RACF alternatives) for each user executing the compiler with this option.