* Separate build directory for Ocarina configuration library

projects/ocarina-config.gpr

@@ -39,9 +39,10 @@ with "ocarina-transfo";
 
 project Ocarina.Config is
    Src_Dir := Ocarina.Top_Src_Dir & "/main";
-   Build_Dir := Ocarina.Top_Build_Dir & "/main";
+   Src_Dir_2 := Ocarina.Top_Build_Dir & "/main";
+   Build_Dir := Ocarina.Top_Build_Dir & "/config";
 
-   for Source_Dirs use (Src_Dir, Build_Dir);
+   for Source_Dirs use (Src_Dir, Src_Dir_2, Build_Dir);
    for Source_Files use ("ocarina-configuration.adb", "ocarina-configuration.ads");
    for Object_Dir use Build_Dir & "/objects";
    for Library_Dir use Build_Dir & "/libs";