X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=p5sagit%2FDevel-Size.git;a=blobdiff_plain;f=Makefile.PL;h=73d38744b88e5e4a65861edd6d21f1375f214d3b;hp=2066fe87646bcad44725c93be3f6c64a9c88408f;hb=fd495cc6d914df3af995a850cc8dd2561d4331b5;hpb=1507f6e06ce9cac06b86caa621e1f9b9e9d618d7

diff --git a/Makefile.PL b/Makefile.PL
index 2066fe8..73d3874 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -1,9 +1,18 @@
-use 5.008;
+#!/usr/bin/perl -w
+use 5.005;
 use ExtUtils::MakeMaker;
+use strict;
+
+use Config;
+(unpack "B*", pack "N", $Config{ptrsize}) =~ /^0+1(0+)$/
+    or die "Your pointer size of $Config{ptrsize} is very confusing";
+my $ptr_bits = length $1;
 
 WriteMakefile(
-  NAME => 'Devel::Size',
-  VERSION_FROM => 'lib/Devel/Size.pm',
-  ($ExtUtils::MakeMaker::VERSION >= 6.47 ? (MIN_PERL_VERSION => '5.008') : ()),
-  ($ExtUtils::MakeMaker::VERSION >= 6.31 ? (LICENSE => 'perl') : ()),
+	      NAME => 'Devel::Size',
+	      VERSION_FROM => 'lib/Devel/Size.pm',
+	      DEFINE => "-DALIGN_BITS=$ptr_bits",
+	      PREREQ_PM => { 'Test::More' => 0, XSLoader => 0, },
+	      (eval $ExtUtils::MakeMaker::VERSION >= 6.47 ? (MIN_PERL_VERSION => '5.005') : ()),
+	      (eval $ExtUtils::MakeMaker::VERSION >= 6.31 ? (LICENSE => 'perl') : ()),
 );