diff -urN graphviz-1.8.5.orig/configure graphviz-1.8.5/configure
--- graphviz-1.8.5.orig/configure	2002-04-12 00:09:37.000000000 +0200
+++ graphviz-1.8.5/configure	2002-05-16 22:49:20.000000000 +0200
@@ -3875,7 +3875,7 @@
     ;;
 
   darwin* | rhapsody*)
-    allow_undefined_flag='-undefined suppress'
+    allow_undefined_flag='-undefined suppress -flat_namespace'
     # FIXME: Relying on posixy $() will cause problems for
     #        cross-compilation, but unfortunately the echo tests do not
     #        yet detect zsh echo's removal of \ escapes.