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package My::Builder;

use strict;
use warnings;
use base 'Module::Build';

use lib "inc";
use My::Utility qw(find_CMake_dir find_file sed_inplace);
use File::Spec::Functions qw(catdir catfile splitpath catpath rel2abs abs2rel);
use File::Path qw(make_path remove_tree);
use File::Copy qw(cp);
use File::Copy::Recursive qw(dircopy);
use File::Fetch 0.50;
use File::Find;
use Archive::Extract;
use Digest::SHA qw(sha1_hex);
use Config;

sub ACTION_build {
  my $self = shift;
  # as we want to wipe 'sharedir' during 'Build clean' we has
  # to recreate 'sharedir' at this point if it does not exist
  mkdir 'sharedir' unless(-d 'sharedir');
  $self->add_to_cleanup('sharedir');
  $self->SUPER::ACTION_build;
}

sub ACTION_code {
  my $self = shift;

  my $bp = $self->notes('build_params');
  die "###ERROR### Cannot continue build_params not defined" unless defined($bp);

  # check marker
  if (! $self->check_build_done_marker) {

    # important directories
    my $download     = 'download';
    my $patches      = 'patches';
    # we are deriving the subdir name from $bp->{title} as we want to
    # prevent troubles when user reinstalls the same version of
    # Alien::CMake with different build options
    my $share_subdir = $self->{properties}->{dist_version} . '_' . substr(sha1_hex($bp->{title}), 0, 8);
    my $build_out    = catfile('sharedir', $share_subdir);
    my $build_src    = 'build_src';
    $self->add_to_cleanup($build_src, $build_out);

    # save some data into future Alien::CMake::ConfigData
    $self->config_data('build_prefix', $build_out);
    $self->config_data('build_params', $bp);
    $self->config_data('build_cc', $Config{cc});
    $self->config_data('build_arch', $Config{archname});
    $self->config_data('build_os', $^O);
    $self->config_data('script', '');            # just to be sure
    $self->config_data('config', {});            # just to be sure

    if($bp->{buildtype} eq 'use_already_existing') {
      $self->config_data('script', $bp->{script});
      $self->set_config_data($bp->{prefix});
    }
    elsif($bp->{buildtype} eq 'use_prebuilt_binaries') {
      # all the following functions die on error, no need to test ret values
      $self->fetch_binaries($download);
      $self->clean_dir($build_out);
      $self->extract_binaries($download, $build_out, $build_src);
      $self->set_config_data($build_out);
    }