Grasshopper, you can determine undefined subroutines at compile time just as soon as you have plucked the Halting Problem from the palm of my hand: 
no strict; no warnings; no less tricky;
foo(lish);
his::bar(tab);
silly->stuff;
come on, please give up;
package UNIVERSAL; 
sub AUTOLOAD { print "I am masquerading as $AUTOLOAD(@_)\n" }

[download]
yields when run: 
I am masquerading as main::foo(lish)
I am masquerading as his::bar(tab)
I am masquerading as silly::stuff(silly)
I am masquerading as on::come(on)
I am masquerading as give::please(give up)

[download]

In reply to Re^2: Detecting undefined subroutines at compile time by tchrist
in thread Detecting undefined subroutines at compile time by bdenckla

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