diff --git a/src/compile/mad_port.erl b/src/compile/mad_port.erl
index d97d28a..d5f6356 100644
--- a/src/compile/mad_port.erl
+++ b/src/compile/mad_port.erl
@@ -31,25 +31,32 @@ compile_port(Dir,Specs0,Config) ->
                            Env1  = [{"PORT_IN_FILES", F},{"PORT_OUT_FILE", Obj}] ++ Env ++ default_env(),
                            CmdCC = string:strip(expand(System,TplCC,Env1)),
                            Cmd = expand(System,CmdCC,[{"CXXFLAGS",""},{"LDFLAGS",""},{"CFLAGS",""}]),
+                           mad:info("cc ~s~n",[Cmd]),
                            {_,Status,Report} = sh:run("cc",string:tokens(Cmd," "),binary,Dir,Env),
                            case Status of 
                             0 -> {ok,Obj} ;
                             _ -> {error, "Port Compilation Error:~n" ++ io_lib:format("~ts",[Report])},true
                            end;
-                        true -> {ok,Obj}
+                        true -> {even,Obj}
                        end 
                     end,
 
-          Res = lists:foldl(fun({ok,X},Acc)   -> [X|Acc];
+          Res = lists:foldl(fun({ok,X},Acc)   -> [{ok,X}|Acc];
+                               ({even,X},Acc) -> [{even,X}|Acc];
                                ({error,Err},_)-> {error,Err} 
                             end,[],[Compile(F) || F <- Files]),
-          case Res of
-            {error, _}=Err -> Err;
-            Objs ->  Env2  = [{"PORT_IN_FILES", string:join(Objs," ")},
+
+          %%if any ok recompile target
+          case Res of {error,_} = Err -> Err; Res ->
+          case lists:any(fun({ok,_}) -> true;(_)->false end, Res) of
+            false -> false; %% all even, no need to link target
+            true ->  Objs = [O||{_,O} <-Res],
+                     Env2  = [{"PORT_IN_FILES", string:join(Objs," ")},
                               {"PORT_OUT_FILE", Target}] ++ Env ++ default_env(),
                      TplLD = tpl_ld(TargetType,LinkLang),
                      CmdLD = string:strip(expand(System,TplLD,Env2)),
                      Cmd = expand(System,CmdLD,[{"CXXFLAGS",""},{"LDFLAGS",""},{"CFLAGS",""}]),
+                     mad:info("cc ~s~n",[Cmd]),
                      {_,Status,Report} = sh:run("cc",string:tokens(Cmd," "),binary,Dir,Env),
                      case Status of 
                       0 -> false;
@@ -57,6 +64,7 @@ compile_port(Dir,Specs0,Config) ->
                            {error, Report},true
                      end                      
           end
+          end
         end,
   [Job(S)||S<-Specs].
 
diff --git a/src/provision/mad_repl.erl b/src/provision/mad_repl.erl
index 344b0af..0642e03 100644
--- a/src/provision/mad_repl.erl
+++ b/src/provision/mad_repl.erl
@@ -3,8 +3,8 @@
 -compile(export_all).
 
 disabled() -> [].
-system() -> [compiler,syntax_tools,sasl,tools,mnesia,reltool,xmerl,crypto,kernel,stdlib,ssh,eldap,
-             wx,ssl,runtime_tools,public_key,observer,inets,asn1,et,eunit,hipe,os_mon,parsetools,odbc,n2o].
+system() -> [compiler,syntax_tools,sasl,tools,mnesia,reltool,xmerl,crypto,kernel,stdlib,ssh,eldap,erl_interface,
+             wx,ssl,runtime_tools,public_key,observer,inets,asn1,et,eunit,hipe,os_mon,parsetools,odbc].
 
 local_app() ->
     case filename:basename(filelib:wildcard("ebin/*.app"),".app") of