--- configure.in	2008-03-10 23:20:39.000000000 +0000
+++ configure-new.in	2008-10-02 22:57:13.000000000 +0100
@@ -1486,7 +1486,9 @@
 fi
 if test -n "$NEGOTIATE_AUTH_HELPERS"; then
     for helper in $NEGOTIATE_AUTH_HELPERS; do
-	if test -d $srcdir/helpers/negotiate_auth/$helper; then
+	if test -f $srcdir/helpers/negotiate_auth/$helper/configure ; then
+		AC_CONFIG_SUBDIRS([helpers/negotiate_auth/$helper])
+	elif test -d $srcdir/helpers/negotiate_auth/$helper; then
 	    :
 	else
 	    echo "ERROR: Negotiate Auth helper $helper does not exists"