The problem is explained fairly clearly by the error messages. Running as user, you can't install to usr/local as you don't have permissions. The 'make install' phase needs to be run as root. Not sure how that is achieved using CPAN, but I would start with the suggested: 
o conf make_install_make_command 'sudo make'

[download]
(You probably have to save that.) I guess, if that works, you'll be prompted for the root password before install takes place.

Cheers,
Rob

In reply to Re: Installing a Second perl by syphilis
in thread Installing a Second perl by Xiong

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