Alien::Build::Plugin(3)

NAME
Alien::Build::Plugin - Plugin base class for Alien::Build

VERSION
version 2.83

SYNOPSIS
Create your plugin:

 package Alien::Build::Plugin::Type::MyPlugin;

 use Alien::Build::Plugin;
 use Carp ();

 has prop1 => 'default value';
 has prop2 => sub { 'default value' };
 has prop3 => sub { Carp::croak 'prop3 is a required property' };

 sub init
 {
   my($self, $meta) = @_;

   my $prop1 = $self->prop1;
   my $prop2 = $self->prop2;
   my $prop3 = $self->prop3;

   $meta->register_hook(sub {
     build => [ '%{make}', '%{make} install' ],
   });
 }

From your alienfile

 use alienfile;
 plugin 'Type::MyPlugin' => (
   prop2 => 'different value',
   prop3 => 'need to provide since it is required',
 );

DESCRIPTION
This document describes the Alien::Build plugin base class. For details on how to write a plugin, see Alien::Build::Manual::PluginAuthor.

Listed are some common types of plugins:

Alien::Build::Plugin::Build
    Tools for building.

Alien::Build::Plugin::Core
    Tools already included.

Alien::Build::Plugin::Decode
    Normally use Download plugins which will pick the correct Decode plugins.

Alien::Build::Plugin::Digest
    Tools for checking cryptographic signatures during a "share" install.

Alien::Build::Plugin::Download
    Methods for retrieving from the internet.

Alien::Build::Plugin::Extract
    Extract from archives that have been downloaded.

Alien::Build::Plugin::Fetch
    Normally use Download plugins which will pick the correct Fetch plugins.

Alien::Build::Plugin::Gather
    Plugins that modify or enhance the gather step.

Alien::Build::Plugin::PkgConfig
    Plugins that work with "pkg-config" or libraries that provide the same functionality.

Alien::Build::Plugin::Prefer
    Normally use Download plugins which will pick the correct Prefer plugins.

Alien::Build::Plugin::Probe
    Look for packages already installed on the system.

Alien::Build::Plugin::Probe
    Plugins useful for unit testing Alien::Build itself, or plugins for it.

CONSTRUCTOR

  new
 my $plugin = Alien::Build::Plugin->new(%props);

  PROPERTIES

  instance_id
 my $id = $plugin->instance_id;

Returns an instance id for the plugin. This is computed from the class and arguments that are passed into the plugin constructor, so technically two instances with the exact same arguments will have the same instance id, but in practice you should never have two instances with the exact same arguments.

METHODS

  init
 $plugin->init($ab_class->meta); # $ab is an Alien::Build class name

You provide the implementation for this. The intent is to register hooks and set meta properties on the Alien::Build class.

  has
 has $prop_name;
 has $prop_name => $default;

Specifies a property of the plugin. You may provide a default value as either a string scalar, or a code reference. The code reference will be called to compute the default value, and if you want the default to be a list or hash reference, this is how you want to do it:

 has foo => sub { [1,2,3] };

  meta
 my $meta = $plugin->meta;

Returns the plugin meta object.

SEE ALSO
Alien::Build, alienfile, Alien::Build::Manual::PluginAuthor

AUTHOR
Author: Graham Ollis <plicease@cpan.org>

Contributors:

Diab Jerius (DJERIUS)

Roy Storey (KIWIROY)

Ilya Pavlov

David Mertens (run4flat)

Mark Nunberg (mordy, mnunberg)

Christian Walde (Mithaldu)

Brian Wightman (MidLifeXis)

Zaki Mughal (zmughal)

mohawk (mohawk2, ETJ)

Vikas N Kumar (vikasnkumar)

Flavio Poletti (polettix)

Salvador Fandiño (salva)

Gianni Ceccarelli (dakkar)

Pavel Shaydo (zwon, trinitum)

Kang-min Liu (劉康民, gugod)

Nicholas Shipp (nshp)

Juan Julián Merelo Guervós (JJ)

Joel Berger (JBERGER)

Petr Písař (ppisar)

Lance Wicks (LANCEW)

Ahmad Fatoum (a3f, ATHREEF)

José Joaquín Atria (JJATRIA)

Duke Leto (LETO)

Shoichi Kaji (SKAJI)

Shawn Laffan (SLAFFAN)

Paul Evans (leonerd, PEVANS)

Håkon Hægland (hakonhagland, HAKONH)

nick nauwelaerts (INPHOBIA)

Florian Weimer

COPYRIGHT AND LICENSE
This software is copyright (c) 2011-2022 by Graham Ollis.

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