[reltool] Add configuration parameter lib_dir on application level

As a way of specifying one specific version of an application, the
following configuration parameter is added on application level:

{lib_dir,Dir}, Dir = string()

This can be useful if the parent directory of the application
directory is not suitable to use as a lib dir on system level.

5 files changed, 75 insertions, 35 deletions

diff --git a/lib/reltool/src/reltool.hrl b/lib/reltool/src/reltool.hrl
index 4e5c5b2849..71d3b60a2b 100644
--- a/lib/reltool/src/reltool.hrl
+++ b/lib/reltool/src/reltool.hrl
@@ -63,6 +63,7 @@
 -type mod()              :: {incl_cond, incl_cond()}
                           | {debug_info, debug_info()}.
 -type app()              :: {vsn, app_vsn()}
+			  | {lib_dir, lib_dir()}
                           | {mod, mod_name(), [mod()]}
                           | {mod_cond, mod_cond()}
                           | {incl_cond, incl_cond()}
@@ -169,7 +170,7 @@
         { %% Static info
           name             :: app_name(),
           is_escript       :: boolean() | {inlined, escript_app_name()},
-          use_selected_vsn :: boolean() | undefined,
+          use_selected_vsn :: vsn | dir | undefined,
           active_dir       :: dir(),
           sorted_dirs      :: [dir()],
           vsn              :: app_vsn(),
diff --git a/lib/reltool/src/reltool_app_win.erl b/lib/reltool/src/reltool_app_win.erl
index e0acfab7aa..6cd0d2f90b 100644
--- a/lib/reltool/src/reltool_app_win.erl
+++ b/lib/reltool/src/reltool_app_win.erl
@@ -611,7 +611,7 @@ handle_event(#state{sys = Sys, app = App} = S, Wx) ->
             redraw_window(S2);
         #wx{userData = use_selected_vsn} ->
             %% Use selected version
-	    App2 = App#app{use_selected_vsn = true},
+	    App2 = App#app{use_selected_vsn = dir},
 	    {ok, App3} = reltool_sys_win:set_app(S#state.parent_pid, App2),
 	    S2 = S#state{app = App3},
 	    redraw_window(S2);
@@ -619,7 +619,8 @@ handle_event(#state{sys = Sys, app = App} = S, Wx) ->
             event = #wxCommand{type = command_radiobox_selected,
                                cmdString = ActiveDir}} ->
             %% Change app source
-	    S2 = change_version(S, App, ActiveDir),
+	    App2 = App#app{use_selected_vsn = dir},
+	    S2 = change_version(S, App2, ActiveDir),
             redraw_window(S2);
         #wx{userData = {mod_button, Action, ListCtrl},
             event = #wxCommand{type = command_button_clicked}} ->
@@ -942,11 +943,11 @@ redraw_config(#state{sys = #sys{incl_cond = GlobalIncl,
 		      LatestRadio,
 		      SelectedRadio,
 		      SourceBox,
-		      fun(true) ->
+		      fun(false) ->
+			      0;
+			 (_) ->
 			      reltool_utils:elem_to_index(ActiveDir,
-							  SortedDirs) - 1;
-			 (false) ->
-			      0
+							  SortedDirs) - 1
 		      end).
 
 redraw_double_box(Global, Local, GlobalRadio, LocalRadio, LocalBox, GetChoice) ->
diff --git a/lib/reltool/src/reltool_server.erl b/lib/reltool/src/reltool_server.erl
index c99180a613..084174a02a 100644
--- a/lib/reltool/src/reltool_server.erl
+++ b/lib/reltool/src/reltool_server.erl
@@ -486,15 +486,19 @@ app_set_config_only(Mods,#app{name                 = Name,
 				  vsn                  = Vsn,
 				  mods                 = Mods},
 
-    %% Some fields shall only be set if it is an escript, e.g. label
-    %% must never be set for any other applications since that will
-    %% prevent refreshing.
     if IsEscript ->
+	    %% Some fields shall only be set if it is an escript, e.g. label
+	    %% must never be set for any other applications since that will
+	    %% prevent refreshing.
 	    App#app{is_escript  = IsEscript,
 		    active_dir  = ActiveDir,
 		    sorted_dirs = SortedDirs,
 		    label       = Label,
 		    info        = Info};
+       UseSelectedVsn =:= dir ->
+	    %% Must not loose active_dir if it is configured to be used
+	    App#app{active_dir = ActiveDir,
+		    sorted_dirs = [ActiveDir]};
        true ->
 	    App
     end.
@@ -1280,11 +1284,11 @@ shrink_app(A) ->
             {Dir, Dirs, OptVsn} =
                 case A#app.use_selected_vsn of
                     undefined ->
-			{shrinked, [], undefined};
-                    false ->
-			{shrinked, [], undefined};
-                    true ->
-			{A#app.active_dir, [A#app.active_dir], A#app.vsn}
+			{undefined, [], undefined};
+                    vsn ->
+			{undefined, [], A#app.vsn};
+                    dir ->
+			{A#app.active_dir, [A#app.active_dir], undefined}
                 end,
             A#app{active_dir = Dir,
 		  sorted_dirs = Dirs,
@@ -1489,8 +1493,21 @@ decode(#app{} = App, [{Key, Val} | KeyVals]) ->
 			    dec_re(Key, Val, App#app.excl_archive_filters)};
             archive_opts when is_list(Val) ->
                 App#app{archive_opts = Val};
-            vsn when is_list(Val) ->
-                App#app{use_selected_vsn = true, vsn = Val};
+            vsn when is_list(Val), App#app.use_selected_vsn=:=undefined ->
+		App#app{use_selected_vsn = vsn, vsn = Val};
+	    lib_dir when is_list(Val), App#app.use_selected_vsn=:=undefined ->
+		case filelib:is_dir(Val) of
+		    true ->
+			App#app{use_selected_vsn = dir,
+				active_dir = Val,
+				sorted_dirs = [Val]};
+		    false ->
+			reltool_utils:throw_error("Illegal lib dir for ~p: ~p",
+						  [App#app.name, Val])
+		end;
+	    SelectVsn when SelectVsn=:=vsn; SelectVsn=:=lib_dir ->
+		reltool_utils:throw_error("Mutual exclusive options "
+					  "'vsn' and 'lib_dir'",[]);
             _ ->
 		reltool_utils:throw_error("Illegal option: ~p", [{Key, Val}])
         end,
@@ -1838,7 +1855,10 @@ merge_app_dirs([{Name, Dir} | Rest], Apps) ->
 merge_app_dirs([], Apps) ->
     set_active_dirs(Apps).
 
-%% First dir, i.e. the one with highest version, is set to active dir
+%% First dir, i.e. the one with highest version, is set to active dir,
+%% unless a specific dir is given in config
+set_active_dirs([#app{use_selected_vsn = dir} = App | Apps]) ->
+    [App | set_active_dirs(Apps)];
 set_active_dirs([#app{sorted_dirs = [ActiveDir|_]} = App | Apps]) ->
     [App#app{active_dir = ActiveDir} | set_active_dirs(Apps)];
 set_active_dirs([#app{sorted_dirs = []} = App | Apps]) ->
@@ -1902,6 +1922,8 @@ ensure_app_info(#app{name = Name, sorted_dirs = []}, _Status) ->
     reltool_utils:throw_error("~p: : Missing application directory.",[Name]);
 ensure_app_info(#app{name = Name,
 		     vsn = Vsn,
+		     use_selected_vsn = UseSelectedVsn,
+		     active_dir = ActiveDir,
 		     sorted_dirs = Dirs,
 		     info = undefined},
 		Status) ->
@@ -1929,19 +1951,28 @@ ensure_app_info(#app{name = Name,
     FirstInfo = hd(AllInfo),
     FirstDir = hd(Dirs),
     if
-        Vsn =:= undefined ->
-            {FirstInfo, FirstDir, Status3};
-        Vsn =:= FirstInfo#app_info.vsn ->
-            {FirstInfo, FirstDir, Status3};
-        true ->
-            case find_vsn(Vsn, AllInfo, Dirs) of
-                {Info, VsnDir} ->
-                    {Info, VsnDir, Status3};
-                false ->
-		    reltool_utils:throw_error(
-		      "~p: No application directory contains selected version ~p",
-		      [Name,Vsn])
-            end
+        UseSelectedVsn =:= dir ->
+	    if ActiveDir =:= FirstDir ->
+		    {FirstInfo, FirstDir, Status3};
+	       true ->
+		    Info = find_dir(ActiveDir, AllInfo, Dirs),
+		    {Info, ActiveDir, Status3}
+	    end;
+        UseSelectedVsn =:= vsn ->
+	    if Vsn =:= FirstInfo#app_info.vsn ->
+		    {FirstInfo, FirstDir, Status3};
+	       true ->
+		    case find_vsn(Vsn, AllInfo, Dirs) of
+			{Info, VsnDir} ->
+			    {Info, VsnDir, Status3};
+			false ->
+			    reltool_utils:throw_error(
+			      "~p: No application directory contains "
+			      "selected version ~p", [Name,Vsn])
+		    end
+	    end;
+	true ->
+            {FirstInfo, FirstDir, Status3}
     end;
 ensure_app_info(#app{active_dir = Dir, info = Info}, Status) ->
     {Info, Dir, Status}.
@@ -1953,6 +1984,11 @@ find_vsn(Vsn, [_ | MoreInfo], [_ | MoreDirs]) ->
 find_vsn(_, [], []) ->
     false.
 
+find_dir(Dir, [Info | _], [Dir | _]) ->
+    Info;
+find_dir(Dir, [_ | MoreInfo], [_ | MoreDirs]) ->
+    find_dir(Dir, MoreInfo, MoreDirs).
+
 get_base(Name, Dir) ->
     case Name of
         erts ->
diff --git a/lib/reltool/src/reltool_target.erl b/lib/reltool/src/reltool_target.erl
index 3d83a77d99..77f862dbc2 100644
--- a/lib/reltool/src/reltool_target.erl
+++ b/lib/reltool/src/reltool_target.erl
@@ -155,6 +155,7 @@ do_gen_config(#app{name = Name,
 		   archive_opts = ArchiveOpts,
 		   use_selected_vsn  = UseSelected,
 		   vsn = Vsn,
+		   active_dir = ActiveDir,
 		   mods = Mods,
 		   is_included = IsIncl},
 	      InclDefs) ->
@@ -170,9 +171,10 @@ do_gen_config(#app{name = Name,
 	 emit(excl_archive_filters, ExclArchiveDirs, undefined, InclDefs),
 	 emit(archive_opts, ArchiveOpts, undefined, InclDefs),
 	 if
-	     IsIncl, InclDefs -> [{vsn, Vsn}];
-	     UseSelected      -> [{vsn, Vsn}];
-	     true             -> []
+	     IsIncl, InclDefs    -> [{vsn, Vsn}, {lib_dir, ActiveDir}];
+	     UseSelected =:= vsn -> [{vsn, Vsn}];
+	     UseSelected =:= dir -> [{lib_dir, ActiveDir}];
+	     true                -> []
 	 end,
 	 [do_gen_config(M, InclDefs) || M <- Mods]
 	],
diff --git a/lib/reltool/src/reltool_utils.erl b/lib/reltool/src/reltool_utils.erl
index b0def45213..ea0b00bbaf 100644
--- a/lib/reltool/src/reltool_utils.erl
+++ b/lib/reltool/src/reltool_utils.erl
@@ -256,7 +256,7 @@ app_dir_test(Dir1, Dir2) ->
 	Name1 > Name2 -> false;
 	Vsn1 < Vsn2 -> false;
 	Vsn1 > Vsn2 -> true;
-	Parent1 < Parent2 -> true;
+	Parent1 =< Parent2 -> true;
 	true -> false
     end.