--- graphviz-2.16.1/configure.BAD	2008-12-31 19:16:28.000000000 -0600
+++ graphviz-2.16.1/configure	2008-12-31 19:16:56.000000000 -0600
@@ -2464,7 +2464,7 @@
 case "${host_os}" in
   *linux* )
     case "${host_cpu}" in
-      powerpc64 | s390x | x86_64 )
+      powerpc64 | s390x | x86_64 | sparc64 )
         LIBPOSTFIX="64"
         ;;
     esac