If you want to change the supplied default compiler options, during installation of the compiler, you should edit and submit sample job IBMZWIOP.
This job will let you specify options that will be applied before any other options, thus effectively changing the default options. This job will also let you specify options that will be applied after all other options, thus effectively changing the default options and preventing them from being overridden.
If you want to change the defaults for the macro preprocessor options, you can also do this at installation time by specifying the appropriate PPMACRO option as part of this job. The PPCICS and PPSQL options let you make the corresponding changes for the CICS® and SQL preprocessors respectively.
Consult the instructions in the sample job for more information.