$NetBSD: patch-configure,v 1.1 2013/09/10 14:45:48 joerg Exp $

--- configure.orig	2013-09-10 11:49:57.000000000 +0000
+++ configure
@@ -2942,6 +2942,7 @@ done
 
 
 case "$ac_cv_prog_CC" in
+ clang*) ;;
  cl*)  cat >> confdefs.h <<\EOF
 #define alloca _alloca
 EOF