diff -uNr graphviz-1.16/lefty/common.h graphviz-1.16-new/lefty/common.h
--- graphviz-1.16/lefty/common.h	Tue Aug 24 18:52:28 2004
+++ graphviz-1.16-new/lefty/common.h	Tue Nov  2 16:51:52 2004
@@ -62,14 +62,14 @@
 #ifdef HAVE_STRING_H
 #include <string.h>
 #endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
 #ifdef HAVE_SYS_SELECT_H
 #include <sys/select.h>
 #endif
 #ifdef HAVE_LIMITS_H
 #include <limits.h>
-#endif
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
 #endif
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
diff -uNr graphviz-1.16/lefty/os/unix/io.c graphviz-1.16-new/lefty/os/unix/io.c
--- graphviz-1.16/lefty/os/unix/io.c	Wed Jul 21 13:27:56 2004
+++ graphviz-1.16-new/lefty/os/unix/io.c	Tue Nov  2 17:12:59 2004
@@ -1,5 +1,12 @@
 /* Lefteris Koutsofios - AT&T Bell Laboratories */
 
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+#ifndef MAC_OS_X_VERSION_10_3
+#define socklen_t int
+#endif
+#endif
+
 #include "common.h"
 #include "io.h"
 #ifdef FEATURE_CS