Index: configure.in
===================================================================
--- configure.in        (revision 16523)
+++ configure.in        (working copy)
@@ -1946,7 +1946,9 @@
 # until we have an empty module list...
 #   (modules may add new modules, and until all dependencies are done...)
 #
+set -x
 while test "x$new_module_list" != "x"; do
+  AC_MSG_MODULE_DBG("nml: enter while loop")
   AC_MSG_MODULE_DBG(-e,"\n****************************************************************")
   AC_MSG_MODULE_DBG("nml: $new_module_list")

@@ -2375,7 +2377,9 @@
   fi
   new_module_list="$new_list_two"
   new_list_two=""
+  AC_MSG_MODULE_DBG("nml: end of current loop")
 done # while test "x$new_module_list" != "x"; do
+AC_MSG_MODULE_DBG("nml: whole while loop finished")
 echo ""

 #--------------------