%ENV vars, for gcc, for ExtUtils::MakeMaker, for Module::Build

App::cpanminus

=head2 Where does this install modules to? Do I need root access?

It installs to wherever ExtUtils::MakeMaker and Module::Build are
configured to (via C<PERL_MM_OPT> and C<PERL_MB_OPT>). So if you're
using local::lib, then it installs to your local perl5
directory. Otherwise it installs to the site_perl directory that
belongs to your perl.
[download]

PERL_MM_OPT, PERL_MB_OPT, LD_LIBRARY_PATH, Re: perlbrew/cpanm on 64 bit Ubuntu Re: cpanm --sudo installs to /root/perl5 instead of /usr, http://perldoc.perl.org/ExtUtils/MakeMaker.html#LIBS, C_INCLUDE_PATH/LIBRARY_PATH... repeat