Sometimes, you may not be sure which level of XL Fortran is installed on a particular machine. You would need to know this information before contacting software support.
To check whether the latest level of the product has been installed through the system installation procedure, issue the command:
lslpp -h "*xlf*"
The result includes the version, release, modification, and fix level of the compiler image installed on the system.
To check the level of the compiler executable itself, issue the command:
what /usr/lpp/xlf/bin/xlfentry
If the compiler is installed in a different directory, use the appropriate path name for the xlfentry file.