Don't execute modules. The error you show will go away if you do 
perl -c -we"use modA"

[download]

or 

perl -MmodA -cwe1

[download]

Treating the module as a script doesn't set %INC, so modA.pm gets compiled and executed twice, once as a script and once as a module (the first time it's used).

In reply to Re: Circular dependencies when using the perl syntax checker by ikegami
in thread Circular dependencies when using the perl syntax checker by tomdee

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