Installing modules

[andreasfc]

I have several modules which are not installed op CentOS 6.x

o GD::Text.......................Not installed! (optional - Required for stats.)
o GD::Graph......................Not installed! (optional - Required for stats.)
o JSON::XS.........................Not installed! (optional - Recommended for faster AJAX/JavaScript handling.)
o Mail::IMAPClient.................Not installed! (optional - Required for IMAP TLS connections.)
o PDF::API2........................Not installed! (optional - Required for PDF output.)
o Text::CSV_XS.....................Not installed! (optional - Recommended for faster CSV handling.)
o YAML::XS.........................Not installed! (required - use "perl -MCPAN -e shell;" - )

How to install the above modules?
Thanx

[jojo]

if not availabe via your os package manager you have to use cpan and compile some of them