--- graphviz-2.26.0/configure.sparc64	2009-12-10 17:30:43.000000000 -0600
+++ graphviz-2.26.0/configure	2009-12-18 11:31:30.000000000 -0600
@@ -2834,7 +2834,7 @@
 case "${host_os}" in
   *linux* )
     case "${host_cpu}" in
-      powerpc64 | s390x | x86_64 )
+      powerpc64 | s390x | x86_64 | sparc64 )
         LIBPOSTFIX="64"
         ;;
     esac