Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Migration Guide

COMMON

The COMMON option specifies that the compiler should generate CM linkage records for uninitialized EXTERNAL STATIC. This option can it make it easier to migrate your code if you declare an EXTERNAL STATIC variable in more than one routine but initialize it in only one.

Please note however that this option is valid only if both the NORENT and LIMITS(EXTNAME(7)) options are in effect.


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