diff -Naur rpmtools-6.1/genhdlist2 rpmtools-6.1.tpg/genhdlist2
--- rpmtools-6.1/genhdlist2	2011-05-31 11:20:48.000000000 +0000
+++ rpmtools-6.1.tpg/genhdlist2	2013-01-31 19:26:11.219761437 +0000
@@ -171,6 +171,7 @@
 	    archive => "$hdlist.tmp",
 	    compress => "gzip",
 	    uncompress => "gzip -d",
+	    extern => 1,
 	    comp_level => 9,
 	) or die "Can't create archive";
     }