Provided by: libdist-zilla-plugins-cjm-perl_4.20-1_all bug

NAME

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

VERSION

       This document describes version 4.15 of Dist::Zilla::Plugin::MakeMaker::Custom, released
       August 24, 2013 as part of Dist-Zilla-Plugins-CJM version 4.20.

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};
             }
           }
         }

         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};
             }
           }
         }

         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 should be more complex than that, or 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 (4.300009 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
       <http://github.com/madsen/dist-zilla-plugins-cjm>.

COPYRIGHT AND LICENSE

       This software is copyright (c) 2013 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.