--- configure.in.orig	Mon Aug 12 18:20:14 2002
+++ configure.in	Mon Aug 12 18:20:37 2002
@@ -273,6 +273,7 @@
 	AC_CACHE_VAL(cv_mono_sizeof_sunpath,
 		[AC_TRY_RUN([
 			#include <stdio.h>
+			#include <sys/types.h>
 			#include <sys/un.h>
 
 			int main(void) {