END blocks are executed in the reverse order they are encountered. So if you put an END block right at the top of your program that sets $?, you should be set. 
my $rv = 2;  # assume fatal.
END { $? = $rv; }

use ...
use ...

{
   ...

   if (...) { $rv = 1; exit(); }

   ...
   
   $rv = 0;
}

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In reply to Re: Getting around $? setting in END blocks by ikegami
in thread Getting around $? setting in END blocks by DrWhy

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