This is a pathing issue. When trying to resolve modules, perl uses the module name to resolve what file to look in, and checks the directories in @INC. One of those entries is usually ., so when your modules are in the local path, you find them. You can address this issue in a couple ways:

• You could use lib, which will modify @INC at compile time.
• You could invoke perl with -I and explicitly include the path
• You could modify your hashbang to explicitly include the path to your libraries, as per the previous solution
• You could parse $0, perhaps with File::Basename, and explicitly add that to @INC. For that to work, it needs to be in a BEFORE block.

All in all, you probably want the first option.

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