We really need to see more of your errors to see what the problem is (you could use a <readmore> tag in your post). Or, you could paste the output into your scratchpad, or host it somewhere if it's very large.

I suspect that the problem might be permissions, though I don't know how these work on a Mac.

The make install step needs to be run as root, or a user that has write access to the perl lib paths. If the install step fails for a dependency module, CPAN.pm will still carry on and try (and fail) to install the dependent modules, which might fail to make and give the output you have shown.

Another possibility is a problem with your C compiler. Several of the modules needed by Bundle::CPAN contain XS code, and you need to have a working C compiler to build it - the same C compiler as your perl was built with.