generate dependencies dunecontrol output

[[Imported from SVN: r5046]]

m4/dune.m4

@@ -242,10 +242,19 @@ AC_DEFUN([DUNE_CHECK_DISPATCH],[
          [AC_MSG_ERROR([Unknown module $1])])
 ])
 
-AC_DEFUN([DUNE_MODULE_DEPENDENCIES],[
-  ifelse($#, 0, , $#, 1, [DUNE_CHECK_DISPATCH($1)], [DUNE_CHECK_DISPATCH($1) DUNE_MODULE_DEPENDENCIES(m4_shift($@))])
+AC_DEFUN([_DUNE_MODULE_DEPENDENCIES],[
+  echo "Dependencies: !$1!"
+  ifelse($#, 0, , $#, 1, [DUNE_CHECK_DISPATCH($1)], [DUNE_CHECK_DISPATCH($1) _DUNE_MODULE_DEPENDENCIES(m4_shift($@))])
 ])
 
+AC_DEFUN([_PRINT],[--module=$1])
+
+AC_DEFUN([_DUNE_MODULE_PARAM_EXPAND], 
+  [ifelse($#, 0, , $#, 1, [--module=$1], [--module=$1 _DUNE_MODULE_PARAM_EXPAND(m4_shift($@))])])
+
+AC_DEFUN([DUNE_MODULE_DEPENDENCIES],
+  [_DUNE_MODULE_DEPENDENCIES(m4_esyscmd(dunecontrol _DUNE_MODULE_PARAM_EXPAND($@) m4print))])
+
 AC_DEFUN([DUNE_DEV_MODE],[
   AC_ARG_ENABLE(dunedevel,
     AC_HELP_STRING([--enable-dunedevel],[activate Dune-Developer-mode]))

m4/dune_all.m4

@@ -91,7 +91,7 @@ fi
 AC_SUBST(DUNEWEBDIR, $with_duneweb)
 
   dnl check all components
-  DUNE_MODULE_DEPENDENCIES($@)
+  ifelse([x$@],[x], , [DUNE_MODULE_DEPENDENCIES($@)])
   AC_REQUIRE([DUNE_SET_MINIMAL_DEBUG_LEVEL])
   AC_REQUIRE([DUNE_PATH_XDR])
   AC_REQUIRE([DUNE_GRID_DIMENSION])
@@ -192,7 +192,7 @@ AC_DEFUN([DUNE_CHECK_ALL_M],[
   if test "x$with_revision" = "xno" ; then with_revision=bar; fi
   AC_SUBST(revision, $with_revision)
 
-  DUNE_MODULE_DEPENDENCIES($@)
+  ifelse([x$@],[x], , [DUNE_MODULE_DEPENDENCIES($@)])
   AC_REQUIRE([DUNE_CHECK_ALL])
   AC_REQUIRE([DUNE_DEV_MODE])
   AC_REQUIRE([DUNE_PKG_CONFIG_REQUIRES])