fix several warnings

Probably fixes a bug in es/CMA, which has been deprecated for a long time in favor of the EDO module anyway.

smp/src/PPExpander.h

@@ -52,7 +52,7 @@ class Loop<T,Arg...>
     }
  
     template<class U>
-    U& findValueImpl(T& t, Arg&... arg, std::true_type)
+    U& findValueImpl(T& t, Arg&... /*arg*/, std::true_type)
     {
         return t;
     }

smp/src/island.cpp

@@ -59,6 +59,10 @@ paradiseo::smp::Island<EOAlgo,EOT,bEOT>::Island(eoPop<EOT>& _pop, IntPolicy<EOT>
     _pop, _intPolicy, _migPolicy, args...)
 { }
 
+template<template <class> class EOAlgo, class EOT, class bEOT>
+paradiseo::smp::Island<EOAlgo,EOT,bEOT>::~Island()
+{ }
+
 template<template <class> class EOAlgo, class EOT, class bEOT>
 void paradiseo::smp::Island<EOAlgo,EOT,bEOT>::operator()()
 {

smp/src/island.h

@@ -133,7 +133,8 @@ public:
     virtual void receive(void);
     
     //AIsland<bEOT> clone() const;
-    
+
+    virtual ~Island();
 protected:
 
     /**

smp/tutorial/Lesson1/QAPGA.h

@@ -30,6 +30,8 @@ Contact: paradiseo-help@lists.gforge.inria.fr
 #ifndef _QAPGA_h
 #define _QAPGA_h
 
+extern int n; // size
+
 class ProblemInit : public eoInit<Problem>
 {
 public: