Makefile.PL

use 5.008000;
use utf8;
use strict;
use warnings;

use ExtUtils::MakeMaker;

# Make setting optional MakeMaker parameters more readable.
sub OPTIONAL {
   return () unless $ExtUtils::MakeMaker::VERSION ge shift;
   return @_;
}

WriteMakefile(
   NAME => 'Set::Relation',
   VERSION => '0.13.4',
   ABSTRACT => 'A relation data type',
   AUTHOR => 'Darren Duncan <darren@DarrenDuncan.net>',
   PREREQ_PM => {
      # This list is a copy of "META_ADD:[configure_|build_|]requires"
      # where the other is canonical; this list is for use by MakeMaker
      # itself, which in general wouldn't see the info in the other lists,
      # as the other lists are primarily used when generating the META.yml/json.
      'Carp' => '1.01',
      'ExtUtils::MakeMaker' => '6.03',
      'List::Util' => '1.4602',
      'Scalar::Util' => '1.13',
      'Test::Deep' => '0.106',
      'Test::More' => '0.92',
   },
   OPTIONAL( '6.48',
      MIN_PERL_VERSION => '5.008000',
   ),
   OPTIONAL( '6.31',
      LICENSE => 'artistic_2',
   ),
   OPTIONAL( '6.46',
      # Use META_ADD instead of META_MERGE so that we can remove
      # any build-time dependencies that MakeMaker will put into
      # the requires field.  (Comment From DBD::SQLite; do *we* need that?)
      META_ADD => {
         configure_requires => {
            'ExtUtils::MakeMaker' => '6.03', # bundled with Perl 5.8.0
         },
         build_requires => {
            'ExtUtils::MakeMaker' => '6.03', # bundled with Perl 5.8.0
            # These are bundled with newer versions of Perl only.
            'Test::More' => '0.92', # bundled with Perl 5.10.1, min 0.88 needed
            # These are not bundled with any version of Perl.
            'Test::Deep' => '0.106', # tests req 0.106+ w Perl 5.10.1+
         },
         requires => {
            'perl' => '5.008000', # as MIN_PERL_VERSION no affect META.yml
            'Carp' => '1.01', # bundled with Perl 5.8.0
            # These are bundled with newer versions of Perl only.
            'Scalar::Util' => '1.13', # bundled with Perl 5.8.1, min 1.09 needed
            'List::Util' => '1.4602', # bundled with Perl 5.26.0, min 1.45 needed
         },
         resources => {
            homepage => 'https://muldis.com',
            license => 'https://www.perlfoundation.org/artistic-license-20.html',
            repository => 'https://github.com/muldis/Set_Relation_Perl',
         },
      },
   ),
);

1;