exe vs shared, fix circular compile

src/compile/mad_port.erl

@@ -21,25 +21,40 @@ compile_port(Dir,Specs0,Config) ->
           [ {Var,Val} || {Var,Val} <- mad_utils:get_value(port_env, Config, []) ] ++
           [ {"LDFLAGS",[]},{"CFLAGS",[]}],
     [ begin
-           Template = string:join(files(Dir,Files)," ") 
-              ++ " CFLAGS LDFLAGS " ++ ei() ++ " -o " ++ Dir ++ "/" ++ Out,
-       Args = string:strip(replace_env(Template,Env),both,32),
-       % mad:info("Args: ~p~n",[Args]),
-       % mad:info("Env: ~p~n",[Env]),
-       {_,Status,Report} = sh:run("cc",string:tokens(Args," "),binary,Dir,Env),
-       case Status of
-          0 -> false;
-          _ -> mad:info("Port Compilation Error:~n" ++ io_lib:format("~ts",[Report]),[]), true end
-      end || {Out,Files} <- Specs ].
+        Files = files(Dir,Patern),
+        Ouput = Dir ++ "/" ++ Out,
+        case is_compiled(Ouput,Files) of 
+          false -> Template = string:join(Files," ") 
+                              ++ " CFLAGS LDFLAGS " ++ ei(Flavour,Out) ++ " -o " ++ Ouput,
+                   Args = string:strip(replace_env(Template,Env),both,32),
+                   %mad:info("Args: ~p~n",[Args]),
+                   %mad:info("Env: ~p~n",[Env]),
+                   {_,Status,Report} = sh:run("cc",string:tokens(Args," "),binary,Dir,Env),
+                   case Status of
+                    0 -> false;
+                    _ -> mad:info("Port Compilation Error:~n" ++ io_lib:format("~ts",[Report]),[]), true 
+                   end;
+          _ -> %mad:info("No Need recompile  ~p~n",[{Ouput,Files}]), 
+               false
+        end
+      end || {Out,Patern} <- Specs ].
 
+is_compiled(O,Files) -> lists:foldl(fun(X,false) -> false;
+                                       (X,true) -> mad_utils:last_modified(O) >= mad_utils:last_modified(X)
+                                    end, true, Files).
 system(Sys,System) -> Sys == System orelse match(Sys,System).
 match(Re,System)   -> case re:run(System, Re, [{capture,none}]) of match -> true; nomatch -> false end.
 erts_dir()         -> lists:concat([code:root_dir(), "/erts-", erlang:system_info(version)]).
-ei_dir()           -> code:lib_dir(erl_interface).
+ei_dir(inc)        -> case code:lib_dir(erl_interface) of {error,bad_name} -> ""; D -> "-I"++D++"/include " end;
+ei_dir(lib)        -> case code:lib_dir(erl_interface) of {error,bad_name} -> ""; D -> "-L"++D++"/lib " end.
 files(Dir,Files)   -> [string:join(filelib:wildcard(Dir ++ "/" ++ F)," ")||F<-Files].
-ei()               -> "-bundle -flat_namespace -undefined suppress " %% for linking phase
-                      "-I"++ei_dir()++"/include "
+ei(Flavour,Out)    -> type(Flavour,Out) 
+                      ++ ei_dir(inc) ++
                       "-I"++erts_dir()++"/include "
-                      "-L"++ei_dir()++"/lib "
+                       ++ ei_dir(lib) ++
                       "-L"++erts_dir()++"/lib ".
-
+type(Flavour,Out)  -> case {Flavour, filename:extension(Out)} of  %% exe or shared
+                        {_,         []} -> "";
+                        {darwin, ".so"} -> "-bundle -flat_namespace -undefined suppress "
+                      end.
+