Revised Makefile.PL and Build.PL.

Build.PL

@@ -1,5 +1,7 @@
 #! /usr/bin/perl -w
+require 5.008;
 use strict;
+use warnings FATAL => 'all';
 use Module::Build;
 
 my $build = Module::Build->new(

Makefile.PL

@@ -1,17 +1,9 @@
 #! /usr/bin/perl -w
+require 5.008;
 use strict;
+use warnings FATAL => 'all';
 use ExtUtils::MakeMaker;
 
-use vars qw($eummver %sign %license);
-$eummver = $ExtUtils::MakeMaker::VERSION;
-$eummver =~ s/_//;
-# SIGN is only availabe since ExtUtils::MakeMaker 6.18
-%sign = qw();
-%sign = (SIGN => 1) if $eummver > 6.17;
-# LICENSE is only availabe since ExtUtils::MakeMaker 6.30_01
-%license = qw();
-%license = (LICENSE => "perl") if $eummver > 6.30;
-
 WriteMakefile(
     NAME        => "Acme::GuessNumber",
     VERSION     => "0.04",
@@ -19,8 +11,8 @@ WriteMakefile(
     AUTHOR      => "imacat <imacat\@mail.imacat.idv.tw>",
     PREREQ_PM   => { },
     PL_FILES    => { },
-    %sign,
-    %license,
+    LICENSE     => "perl",
+    SIGN        => 1,
     
     dist        => {
         COMPRESS    => "gzip -9",