config/auto/m4 - Check whether GNU m4 works
Determines whether GNU m4 exists on the system. It is OK when it doesn't exist. Currently GNU m4 is only used for doublechecking Parrot m4.
To install Ruby, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Ruby
CPAN shell
perl -MCPAN -e shell install Ruby
For more information on module installation, please visit the detailed CPAN module installation guide.