If you want to catch all the named subroutines, these will be in the symbol table hash (stash) %main:: (also known as %::) or %Foo::Bar::.

One way to get this is through the perl debugger. Run a script and issue the following command:

  DB<1> x %::
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This will pick up all the global variables and subs in main:: and also all the packages. You can walk into each package namespace and get further globals, packages and subs.

You can also get the debugger to read its commands from a file instead of stdin, which may help automate your process.

Hope this helps