--- graphviz-2.20.3/configure.BAD	2009-06-10 15:30:55.000000000 -0400
+++ graphviz-2.20.3/configure	2009-06-10 15:31:52.000000000 -0400
@@ -2595,7 +2595,7 @@
 case "${host_os}" in
   *linux* )
     case "${host_cpu}" in
-      powerpc64 | s390x | x86_64 )
+      powerpc64 | s390x | x86_64 | sparc64 )
         LIBPOSTFIX="64"
         ;;
     esac