rebuild.pl
Run a command to rebuild a set of files only if the inputs have changed, as judged by their checksums.
rebuild.pl [-v] <command> <input> <outputs>...
This script works by appending the line
/* CHECKSUM: <checksum> */
to the end of all generated output files, and checking for that line before rerunning the build script.
See parrot/config/gen/makefiles/imcc.in for an example usage.
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.