/ 
Dist-Zilla-Plugins-CJM-6.000
River stage two • 17 direct dependents • 23 total dependents
/ Dist::Zilla::Plugin::MakeMaker::Custom

NAME

Dist::Zilla::Plugin::MakeMaker::Custom - Allow a dist to have a custom Makefile.PL

VERSION

This document describes version 4.26 of Dist::Zilla::Plugin::MakeMaker::Custom, released December 17, 2017 as part of Dist-Zilla-Plugins-CJM version 6.000.

SYNOPSIS

In dist.ini:

[MakeMaker::Custom]
eumm_version = 0.34  ; the default comes from the MakeMaker plugin

In your Makefile.PL:

use ExtUtils::MakeMaker;

##{ $share_dir_code{preamble} || '' ##}

my %args = (
  NAME => "My::Module",
##{ $plugin->get_default(qw(ABSTRACT AUTHOR LICENSE VERSION)) ##}
##{ $plugin->get_prereqs(1) ##}
);

unless ( eval { ExtUtils::MakeMaker->VERSION(6.63_03) } ) {
  my $tr = delete $args{TEST_REQUIRES};
  my $br = $args{BUILD_REQUIRES};
  for my $mod ( keys %$tr ) {
    if ( exists $br->{$mod} ) {
      $br->{$mod} = $tr->{$mod} if $tr->{$mod} > $br->{$mod};
    }
    else {
      $br->{$mod} = $tr->{$mod};
    }
  }
} # end unless ExtUtils::MakeMaker is 6.63_03 or newer

unless ( eval { ExtUtils::MakeMaker->VERSION(6.56) } ) {
  my $br = delete $args{BUILD_REQUIRES};
  my $pp = $args{PREREQ_PM};
  for my $mod ( keys %$br ) {
    if ( exists $pp->{$mod} ) {
      $pp->{$mod} = $br->{$mod} if $br->{$mod} > $pp->{$mod};
    }
    else {
      $pp->{$mod} = $br->{$mod};
    }
  }
} # end unless ExtUtils::MakeMaker is 6.56 or newer

delete $args{CONFIGURE_REQUIRES}
  unless eval { ExtUtils::MakeMaker->VERSION(6.52) };

delete $args{LICENSE}
  unless eval { ExtUtils::MakeMaker->VERSION(6.31) };

WriteMakefile(%args);

##{ $share_dir_code{postamble} || '' ##}

Of course, your Makefile.PL doesn't need to look exactly like this. If you increase the minimum version of ExtUtils::MakeMaker, you can remove any unless eval sections whose version test is less than or equal to eumm_version. If you're not using share_dir, you can remove those lines.

And if you're not adding your own code to Makefile.PL, you don't need this plugin.

DESCRIPTION

This plugin is for people who need something more complex than the auto-generated Makefile.PL or Build.PL generated by the MakeMaker or ModuleBuild plugins.

It is a subclass of the MakeMaker plugin, but it does not write a Makefile.PL for you. Instead, you write your own Makefile.PL, which may do anything ExtUtils::MakeMaker is capable of.

This plugin will process Makefile.PL as a template (using Text::Template), which allows you to add data from Dist::Zilla to the version you distribute (if you want). The template delimiters are ##{ and ##}, because that makes them look like comments. That makes it easier to have a Makefile.PL that works both before and after it is processed as a template.

This is particularly useful for XS-based modules, because it can allow you to build and test the module without the overhead of dzil build after every small change.

The template may use the following variables:

%default_args

The hash of arguments for WriteMakefile generated by the normal MakeMaker plugin.

$dist

The name of the distribution.

$eumm_version

The minimum version of ExtUtils::MakeMaker required (from the eumm_version attribute of this plugin).

%meta

The hash of metadata (in META 2 format) that will be stored in META.json.

$perl_prereq

The minimum version of Perl required (from the prerequisites in the metadata). May be undef. Equivalent to $default_args{MIN_PERL_VERSION}.

$plugin

The MakeMaker::Custom object that is processing the template.

%share_dir_code

A hash of strings containing the code for loading File::ShareDir::Install (if it's used by this dist). Put ##{ $share_dir_code{preamble} || '' ##} after the use ExtUtils::MakeMaker line, and put ##{ $share_dir_code{postamble} || '' ##} after the WriteMakefile call. (You can omit the || '' if you're sure the dist is using File::ShareDir.

For backwards compatibility, this code is also available in the array @share_dir_block, but you should update your templates to use %share_dir_code instead.

$version

The distribution's version number.

$zilla

The Dist::Zilla object that is creating the distribution.

Using MakeMaker::Custom with AutoPrereqs

If you are using the AutoPrereqs plugin, then you will probably want to set its configure_finder to a FileFinder that includes Makefile.PL. You may also want to set this plugin's eumm_version parameter to 0 and allow AutoPrereqs to get the version from your use ExtUtils::MakeMaker line.

Example dist.ini configuration:

[MakeMaker::Custom]
eumm_version = 0 ; AutoPrereqs gets actual version from Makefile.PL

[FileFinder::ByName / :MakefilePL]
file = Makefile.PL

[AutoPrereqs]
:version = 4.300005 ; need configure_finder
configure_finder = :MakefilePL
; Add next line if your Makefile.PL uses modules you ship in inc/
configure_finder = :IncModules

Then in your Makefile.PL you'd say:

use ExtUtils::MakeMaker 6.32; # or whatever version you need

METHODS

get_default

$plugin->get_default(qw(key1 key2 ...))

A template can call this method to extract the specified key(s) from the default WriteMakefile arguments created by the normal MakeMaker plugin and have them formatted into a comma-separated list suitable for a hash constructor or a function's parameter list.

If any key has no value (or its value is an empty hash or array ref) it will be omitted from the list. If all keys are omitted, the empty string is returned. Otherwise, the result always ends with a comma.

get_prereqs

$plugin->get_prereqs($api_version);

This is mostly equivalent to

$plugin->get_default(qw(BUILD_REQUIRES CONFIGURE_REQUIRES PREREQ_PM
                        TEST_REQUIRES))

In other words, it returns all the keys that describe the distribution's prerequisites. The $api_version indicates what keys the template can handle. The currently defined values are:

0 (or undef) - Fold TEST_REQUIRES into BUILD_REQUIRES. This provides backwards compatibility with older versions of this plugin and Dist::Zilla.
1 - Return TEST_REQUIRES (introduced in ExtUtils::MakeMaker 6.63_03) as a separate key (assuming it's not empty), which requires Dist::Zilla 4.300032 or later. Your Makefile.PL should either require ExtUtils::MakeMaker 6.63_03, or fold TEST_REQUIRES into BUILD_REQUIRES if an older version is used (as shown in the SYNOPSIS).

SEE ALSO

The ModuleBuild::Custom plugin does basically the same thing as this plugin, but for Build.PL (if you prefer Module::Build).

The MakeMaker::Awesome plugin allows you to do similar things to your Makefile.PL, but it works in a very different way. With MakeMaker::Awesome, you subclass the plugin and override the methods that generate Makefile.PL. In my opinion, MakeMaker::Awesome has two disadvantages: it's unnecessarily complex, and it doesn't allow you to build your module without doing dzil build. The only advantage of MakeMaker::Awesome that I can see is that if you had several dists with very similar Makefile.PLs, you could write one subclass of MakeMaker::Awesome and use it in each dist.

DEPENDENCIES

MakeMaker::Custom requires Dist::Zilla (6 or later) and Text::Template. I also recommend applying Template_strict.patch to Text::Template. This will add support for the STRICT option, which will help catch errors in your templates.

INCOMPATIBILITIES

You must not use this in conjunction with the MakeMaker or MakeMaker::Awesome plugins.

BUGS AND LIMITATIONS

No bugs have been reported.

AUTHOR

Christopher J. Madsen <perl AT cjmweb.net>

Please report any bugs or feature requests to <bug-Dist-Zilla-Plugins-CJM AT rt.cpan.org> or through the web interface at http://rt.cpan.org/Public/Bug/Report.html?Queue=Dist-Zilla-Plugins-CJM.

You can follow or contribute to Dist-Zilla-Plugins-CJM's development at https://github.com/madsen/dist-zilla-plugins-cjm.

COPYRIGHT AND LICENSE

This software is copyright (c) 2017 by Christopher J. Madsen.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

DISCLAIMER OF WARRANTY

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENSE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.