diff -urNad libopengl-perl.orig/libopengl-perl-0.6703+dfsg/debian/patches/reproducible_build libopengl-perl/libopengl-perl-0.6703+dfsg/debian/patches/reproducible_build
--- libopengl-perl.orig/libopengl-perl-0.6703+dfsg/debian/patches/reproducible_build	1970-01-01 01:00:00.000000000 +0100
+++ libopengl-perl/libopengl-perl-0.6703+dfsg/debian/patches/reproducible_build	2015-02-22 08:58:12.617278658 +0000
@@ -0,0 +1,21 @@
+--- libopengl-perl-0.6703+dfsg.orig/Makefile.PL
++++ libopengl-perl-0.6703+dfsg/Makefile.PL
+@@ -8,6 +8,9 @@ use Config;
+ # See lib/ExtUtils/MakeMaker.pm for details of how to influence
+ # the contents of the Makefile that is written.
+ 
++# Ensure deterministic output
++$Data::Dumper::Sortkeys = 1;
++
+ # Supported windowing interfaces
+ our $is_valid_interface =
+ {
+@@ -505,7 +508,7 @@ else # Everyone else
+   }
+ 
+   # Marshall libs
+-  my $libs = ' -l'.join(' -l',values(%$found_libs));
++  my $libs = ' -l'.join(' -l',sort values(%$found_libs));
+   my @more_libs = qw
+   {
+     -lX11
diff -urNad libopengl-perl.orig/libopengl-perl-0.6703+dfsg/debian/patches/series libopengl-perl/libopengl-perl-0.6703+dfsg/debian/patches/series
--- libopengl-perl.orig/libopengl-perl-0.6703+dfsg/debian/patches/series	2015-02-22 08:51:17.047001226 +0000
+++ libopengl-perl/libopengl-perl-0.6703+dfsg/debian/patches/series	2015-02-22 08:58:09.049121895 +0000
@@ -4,3 +4,4 @@
 glext_procs-replacement
 use-systems-gl
 dont_link_against_unused_libs
+reproducible_build