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lib/Alien/Build/Plugin/PkgConfig/Negotiate.pm  view on Meta::CPAN

use Alien::Build::Plugin::PkgConfig::LibPkgConf;
use Alien::Build::Plugin::PkgConfig::CommandLine;
use Alien::Build::Util qw( _perl_config );
use Carp ();

# ABSTRACT: Package configuration negotiation plugin
our $VERSION = '2.84'; # VERSION


has '+pkg_name' => sub {
  Carp::croak "pkg_name is a required property";
};


has atleast_version => undef;


has exact_version => undef;


has max_version => undef;


has minimum_version => undef;


sub pick
{
  my($class) = @_;

  return $ENV{ALIEN_BUILD_PKG_CONFIG} if $ENV{ALIEN_BUILD_PKG_CONFIG};

  if(Alien::Build::Plugin::PkgConfig::LibPkgConf->available)
  {
    return 'PkgConfig::LibPkgConf';
  }

  if(Alien::Build::Plugin::PkgConfig::CommandLine->available)
  {
    # TODO: determine environment or flags necessary for using pkg-config
    # on solaris 64 bit.
    # Some advice on pkg-config and 64 bit Solaris
    # https://docs.oracle.com/cd/E53394_01/html/E61689/gplhi.html
    my $is_solaris64 = (_perl_config('osname') eq 'solaris' && _perl_config('ptrsize') == 8);

    # PkgConfig.pm is more reliable on windows
    my $is_windows = _perl_config('osname') eq 'MSWin32';

    if(!$is_solaris64 && !$is_windows)
    {
      return 'PkgConfig::CommandLine';
    }
  }

  if(Alien::Build::Plugin::PkgConfig::PP->available)
  {
    return 'PkgConfig::PP';
  }
  else
  {
    # this is a fata error.  because we check for a pkg-config implementation
    # at configure time, we expect at least one of these to work.  (and we
    # fallback on installing PkgConfig.pm as a prereq if nothing else is avail).
    # we therefore expect at least one of these to work, if not, then the configuration
    # of the system has shifted from underneath us.
    Carp::croak("Could not find an appropriate pkg-config or pkgconf implementation, please install PkgConfig.pm, PkgConfig::LibPkgConf, pkg-config or pkgconf");
  }
}

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

  my $plugin = $self->pick;
  Alien::Build->log("Using PkgConfig plugin: $plugin");

  if(ref($self->pkg_name) eq 'ARRAY')
  {
    $meta->add_requires('configure', 'Alien::Build::Plugin::PkgConfig::Negotiate' => '0.79');
  }

  if($self->atleast_version || $self->exact_version || $self->max_version)
  {
    $meta->add_requires('configure', 'Alien::Build::Plugin::PkgConfig::Negotiate' => '1.53');
  }

  my @args;
  push @args, pkg_name         => $self->pkg_name;
  push @args, register_prereqs => 0;

  foreach my $method (map { "${_}_version" } qw( minimum atleast exact max ))
  {
    push @args, $method => $self->$method if defined $self->$method;
  }

  $meta->apply_plugin($plugin, @args);

  $self;
}

1;

__END__

=pod

=encoding UTF-8

=head1 NAME

Alien::Build::Plugin::PkgConfig::Negotiate - Package configuration negotiation plugin

=head1 VERSION

version 2.84

=head1 SYNOPSIS

 use alienfile;
 plugin 'PkgConfig' => (
   pkg_name => 'libfoo',