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            ($2 < 4);
    } else {
        warn "Failed to check Python version, assuming it is correct\n";
    }
    
    print "Using $version from $pythonpath\n";
}

##############################################################################
#
# Module::Build actions
#
##############################################################################
sub ACTION_build {
    my $self = shift;
    
    check_python_version();
    
    my $curdir = getcwd;
    
    chdir($SrcDir) or
        die "Failed to chdir to $SrcDir: $!\n";
        
    my $tar = Archive::Tar->new();
    
    # Extract SCons
    if (!-d $SConsDir) {
        print "Extracting $SConsDist\n";
        $tar->read($SConsDist);
        $tar->extract();
    }
    
    # Ensure SCons is executable
    if ($^O ne "MSWin32") {
        chmod(0755, $SConsBin) or
            die "Failed to set permissions on $SConsBin: $!\n";
    }
    
    # Extract V8
    if (!-d $V8SrcDir) {
        print "Extracting $V8Dist\n";
        $tar->read($V8Dist);
        $tar->extract();
    }
    
    # Remove -Werror from SConstruct
    do {
        my $in;
        my $out;
        open($in, '<', 'v8-3.1.5/SConstruct') || die "unable to read src/v8-3.1.5/SConstruct $!";
        open($out, '>', 'v8-3.1.5/SConstruct.tmp') || die "unable to write src/v8-3.1.5/SConstruct.tmp $!";
        while(!eof($in))
        {
          my $line = <$in>;
          $line =~ s/'-Werror',//g; 
          print $out $line;
        }
        close $in;
        close $out;
        unlink('v8-3.1.5/SConstruct') || die "unaable to unlink src/v8-3.1.5/SConstruct $!";
        rename('v8-3.1.5/SConstruct.tmp', 'v8-3.1.5/SConstruct') || die "unable to rename src/v8-3.1.5/SConstruct.tmp src/v8-3.1.5/SConstruct $!";
    };
    
    # Build V8
    if (exists($Config{ptrsize}) && $Config{ptrsize} == 8) {
        push(@SConsArgs, "arch=x64");
    }
    
    chdir($V8SrcDir) or
        die "Failed to chdir to $V8SrcDir: $!\n";
    
    $ENV{SCONS_LIB_DIR} = $SConsLibDir;
    
    print "Building V8 library\n";
    system("$SConsBin " . join(" ", @SConsArgs)) == 0 or
        die "Failed to build V8\n";
        
    # Stage V8 into share dir
    print "Staging V8 library\n";
    make_shared_directories();
    
    foreach my $tch (@ToCopy) {
        copy($tch->{source}, $tch->{dest}) or
            die "Failed to copy " . $tch->{source} . " to " . $tch->{dest} . "\n";
    }
    
    if ($^O ne "MSWin32") {
        chmod(0755, $V8DstLibName) or
            die "Failed to set permissions on $V8DstLibName: $!\n";
    }
    
    print "V8 library successfully built\n";
    
    chdir($curdir) or
        die "Failed to chdir to $curdir: $!\n";
    
    $self->SUPER::ACTION_build();
}

1;

__END__