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inc/Alien/make/Module/Build.pm  view on Meta::CPAN

      last;
   }

   # GNU libtool is called 'glibtool' on Darwin
   foreach my $libtool (qw( libtool glibtool )) {
      no warnings 'exec';
      my $output = `$libtool --version`;
      next if $?;
      next unless $output =~ m/^.*\(GNU libtool\)/;

      constant->import( LIBTOOL => $libtool );
      last;
   }
}

sub MAKEARGS { "LIBTOOL=".LIBTOOL() }

__PACKAGE__->add_property( 'tarball' );
__PACKAGE__->add_property( 'pkgconfig_module' );
__PACKAGE__->add_property( 'pkgconfig_version' );
__PACKAGE__->add_property( 'alien_requires' );

# Modules that this code itself requires
my %more_configure_requires = (
   'File::Basename' => 0,
   'File::Spec'     => 0,
   'File::Path'     => '2.07',
   'Module::Build'  => 0,
);

# Hunt down any extra pkgconfig directories in @INC if we find them
# This allows pkg-config in C library's Makefile to find .pc files provided
# by dependent Alien:: modules
sub apply_extra_pkgconfig_paths
{
   my %added;

   foreach my $inc ( @INC ) {
      my $dir = "$inc/pkgconfig";
      next unless -d $dir;
      $added{$dir}++ and next;

      $ENV{PKG_CONFIG_PATH} = join ":", grep { defined }
         $dir, $ENV{PKG_CONFIG_PATH};
   }
}

sub new
{
   my $class = shift;
   my %args = @_;

   my $use_bundled = !!$args{use_bundled};

   $args{get_options}{bundled} = {
      store => \$use_bundled,
      type  => "+",
   };


   my $self = $class->SUPER::new( %args );

   my $module = $self->pkgconfig_module;
   my $version = $self->pkgconfig_version;

   $use_bundled = 1 if
      !$use_bundled and defined $self->do_requires_pkgconfig( $module, atleast_version => $version );

   $self->configure_requires->{$_} ||= $more_configure_requires{$_} for keys %more_configure_requires;

   # Only do this /after/ the do_requires_pkgconfig for toplevel module
   $self->apply_extra_pkgconfig_paths;

   my @reqs = @{ $self->alien_requires || [] };
   while( @reqs ) {
      my ( $name, @args ) = @{ shift @reqs };

      push( @reqs, @args ), next if $name eq "any";

      $self->configure_requires->{"ExtUtils::CChecker"} //= 0 if $name eq "header";
   }

   if( $use_bundled ) {
      foreach my $req ( @{ $self->alien_requires || [] } ) {
         my $missing = $self->do_requires( @$req );
         die "OS unsupported - missing $missing\n" if defined $missing;
      }

      die "OS unsupported - unable to find GNU make\n" unless defined &MAKE;
      die "OS unsupported - unable to find GNU libtool\n" unless defined &LIBTOOL;
      print "Building bundled source\n";
   }
   else {
      print "Using $module version >= $version from pkg-config\n";
   }

   $self->notes( use_bundled => $use_bundled );

   return $self;
}

{
   my $eucc;

   sub cchecker
   {
      my $self = shift;
      return $eucc ||= do {
         require ExtUtils::CChecker;
         return ExtUtils::CChecker->new;
      };
   }
}

sub do_requires
{
   my $self = shift;
   my ( $name, @args ) = @_;

   my $code = $self->can( "do_requires_$name" ) or
      die "Unrecognised 'alien_requires' requirement type '$name'\n";

inc/Alien/make/Module/Build.pm  view on Meta::CPAN

      my %replace = (
         USE_BUNDLED      => $self->notes( 'use_bundled' ),
         PKGCONFIG_MODULE => $pkgconfig_module,
      );

      # Turn ' into \' in replacements
      s/'/\\'/g for values %replace;

      $self->cp_file_with_replacement(
         srcfile => $srcfile,
         dstfile => $dstfile,
         replace => \%replace,
      );
   }
}

sub cp_file_with_replacement
{
   my $self = shift;
   my %args = @_;

   my $srcfile = $args{srcfile};
   my $dstfile = $args{dstfile};
   my $replace = $args{replace};

   make_path( dirname( $dstfile ), { mode => 0777 } );

   open( my $inh,  "<", $srcfile ) or die "Cannot read $srcfile - $!";
   open( my $outh, ">", $dstfile ) or die "Cannot write $dstfile - $!";

   while( my $line = <$inh> ) {
      $line =~ s/\@$_\@/$replace->{$_}/g for keys %$replace;
      print $outh $line;
   }
}

sub ACTION_test
{
   my $self = shift;

   return unless $self->notes( 'use_bundled' );

   $self->apply_extra_pkgconfig_paths;

   $self->depends_on( "code" );

   $self->make_in_srcdir( "test" );
}

sub ACTION_install
{
   my $self = shift;

   $self->apply_extra_pkgconfig_paths;

   # There's two bugs in just doing this:
   #   1) symlinks (e.g. libfoo.so => libfoo.so.1) get copied as new files
   #   2) needlessly considers the .pc file different and copies/relocates it
   #      every time.
   # Both of these are still under investigation
   $self->SUPER::ACTION_install;

   # The .pc file that 'ACTION_install' has written contains the build-time
   # blib paths in it. We need that rewritten for the real install location
   #
   # We don't do this at 'ACTION_code' time, because of one awkward cornercase.
   # When 'cpan> test Foo' is testing an entire tree of dependent modules, it
   # never installs them, instead adding each of them to the PERL5LIB in turn
   # so later ones can find them. We needed the path to be "correct" at that
   # point so that dependent modules can at least find something to link and
   # test against.

   my $buildlibdir = File::Spec->catdir( $self->base_dir, "blib", "arch" );
   my $instlibdir  = $self->install_destination( "arch" );

   my $pkgconfig_module = $self->pkgconfig_module;

   my $pcfile = "$instlibdir/pkgconfig/$pkgconfig_module.pc";
   if( -f $pcfile ) {
      print "Relocating $pcfile";

      open my $in, "<", $pcfile or die "Cannot open $pcfile for reading - $!";
      open my $out, ">", "$pcfile.new" or die "Cannot open $pcfile.new for writing - $!";

      print { $out } join "\n",
         "# pkg-config paths rewritten by Alien::make::Module::Build",
         "# buildlibdir=$buildlibdir",
         "# instlibdir=$instlibdir",
         "";

      while( <$in> ) {
         s{\Q$buildlibdir\E}{$instlibdir}g;
         print { $out } $_;
      }

      # Cygwin/Windows doesn't like it when you delete open files
      close $in;
      close $out;

      unlink $pcfile;
      rename "$pcfile.new", $pcfile;
   }
}

sub ACTION_clean
{
   my $self = shift;

   if( $self->notes( 'use_bundled' ) ) {
      $self->apply_extra_pkgconfig_paths;

      if( -d $self->_srcdir ) {
         $self->make_in_srcdir( "clean" );
      }

      unlink( $self->_stampfile( "build" ) );
   }

   $self->SUPER::ACTION_clean;
}

sub ACTION_realclean
{
   my $self = shift;

   if( -d $self->_srcdir ) {
      system( "rm", "-rf", $self->_srcdir ); # best effort; ignore failure
   }

   $self->SUPER::ACTION_realclean;
}

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