#!/usr/bin/perl

#BEGIN { unshift @INC, sub { warn "loading $_[ 1]\n"; return } } 
#or 
use lib sub {warn "loading $_[ 1]\n"; return };

use CGI;
print "hello\n";


#or 
#Abigail 
#Alternatively, one could just inspect %INC.  
#Just stuff 

#   CHECK {print "$_\n" for keys %INC} 

#somewhere in your code, and run 'perl -c'.