Silence unused objects warnings - unknown consequences of removing them

melgmix.h

@@ -157,8 +157,8 @@ namespace Melodic{
       double datastdev;
 
     private:
-      MelodicOptions &opts;     
-      Log &logger; //global log file
+      __attribute__((unused)) MelodicOptions &opts;     
+      __attribute__((unused)) Log &logger; //global log file
 
       //Log mainhtml;
 

melpca.h

@@ -46,7 +46,7 @@ namespace Melodic{
       MelodicData &melodat;
       MelodicOptions &opts;
       Log &logger;
-      MelodicReport &report;
+      __attribute__((unused)) MelodicReport &report;
 
       int pcadim();
   };