$NetBSD: patch-configure,v 1.1 2012/07/03 17:32:00 joerg Exp $

--- configure.orig	2002-01-18 01:16:44.000000000 +0000
+++ configure
@@ -665,7 +665,7 @@ cat > conftest.$ac_ext << EOF
 #line 666 "configure"
 #include "confdefs.h"
 
-main(){return(0);}
+int main(){return(0);}
 EOF
 if { (eval echo configure:671: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
@@ -1664,7 +1664,7 @@ extern "C" void exit(int);
 #endif
 #include <stdio.h>
 #include <sys/types.h>
-main()
+int main()
 {
   FILE *f=fopen("conftestval", "w");
   if (!f) exit(1);
@@ -1706,7 +1706,7 @@ extern "C" void exit(int);
 #endif
 #include <stdio.h>
 #include <sys/types.h>
-main()
+int main()
 {
   FILE *f=fopen("conftestval", "w");
   if (!f) exit(1);
@@ -1748,7 +1748,7 @@ extern "C" void exit(int);
 #endif
 #include <stdio.h>
 #include <sys/types.h>
-main()
+int main()
 {
   FILE *f=fopen("conftestval", "w");
   if (!f) exit(1);