expand-macro.pl - expand C macros using the C preprocessor
expand-macro.pl [options] [ < macro-name | macro-expression | - > [headers] ] options: -f use 'indent' to format output -F <tool> use <tool> to format output (instead of -f) -e erase try.[ic] instead of failing when they're present (errdetect) -k keep them after generating (for handy inspection) -v verbose -I <indent-opts> passed into indent -X include "XSUB.h" (and undefine PERL_CORE)
To install vars, copy and paste the appropriate command in to your terminal.
cpanm
cpanm vars
CPAN shell
perl -MCPAN -e shell install vars
For more information on module installation, please visit the detailed CPAN module installation guide.