diff -Naur heimdal-1.2.1-lunar/cf/roken-frag.m4 heimdal-1.2.1/cf/roken-frag.m4
--- heimdal-1.2.1-lunar/cf/roken-frag.m4	2008-07-28 14:04:49.000000000 +0200
+++ heimdal-1.2.1/cf/roken-frag.m4	2009-09-10 11:57:59.000000000 +0200
@@ -586,7 +586,7 @@
 #include <err.h>
 #endif])
 
-AC_CHECK_DECLS([optarg, optind, opterr, optopt, environ],[],[][
+AC_CHECK_DECLS([optarg, optind, opterr, optopt, environ],[],[],[
 #include <stdlib.h>
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>