gcc update:

- removed support for 4.6
- compilation fixes for 4.7

AI/VCAI/VCAI.cpp

@@ -1213,7 +1213,6 @@ std::vector<const CGObjectInstance *> VCAI::getPossibleDestinations(HeroPtr h)
 	std::vector<const CGObjectInstance *> possibleDestinations;
 	for(const CGObjectInstance *obj : visitableObjs)
 	{
-		const int3 pos = obj->visitablePos();
 		if (isGoodForVisit(obj, h))
 		{
 			possibleDestinations.push_back(obj);
@@ -1305,7 +1304,7 @@ void VCAI::wander(HeroPtr h)
 			if(townsReachable.size())
 			{
 				boost::sort(townsReachable, compareReinforcements);
-				dests.emplace_back(townsReachable.back());
+				dests.push_back(townsReachable.back());
 			}
 			else if(townsNotReachable.size())
 			{

Global.h

@@ -24,12 +24,12 @@ static_assert(sizeof(bool) == 1, "Bool needs to be 1 byte in size.");
 #  define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__ * 10 + __GNUC_PATCHLEVEL__)
 #endif
 
-#if !defined(__clang__) && defined(__GNUC__) && (GCC_VERSION < 460)
-#  error VCMI requires at least gcc-4.6 for successful compilation or clang-3.1. Please update your compiler
+#if !defined(__clang__) && defined(__GNUC__) && (GCC_VERSION < 470)
+#  error VCMI requires at least gcc-4.7.2 for successful compilation or clang-3.1. Please update your compiler
 #endif
 
 #if defined(__GNUC__) && (GCC_VERSION == 470 || GCC_VERSION == 471)
-#  error This GCC version has buggy std::array::at version and should not be used. Please update to 4.7.2 or use 4.6.x.
+#  error This GCC version has buggy std::array::at version and should not be used. Please update to 4.7.2 or later
 #endif
 
 /* ---------------------------------------------------------------------------- */
@@ -42,11 +42,6 @@ static_assert(sizeof(bool) == 1, "Bool needs to be 1 byte in size.");
 #  define CPP11_USE_INITIALIZERS_LIST
 #endif
 
-//override keyword - not present in gcc-4.6
-#if !defined(_MSC_VER) && !defined(__clang__) && !(defined(__GNUC__) && (GCC_VERSION >= 470))
-#  define override
-#endif
-
 /* ---------------------------------------------------------------------------- */
 /* Suppress some compiler warnings */
 /* ---------------------------------------------------------------------------- */

client/NetPacksClient.cpp

@@ -332,7 +332,6 @@ void RemoveObject::applyFirstCl( CClient *cl )
 
 	CGI->mh->hideObject(o);
 
-	int3 pos = o->visitablePos();
 	//notify interfaces about removal
 	for(auto i=cl->playerint.begin(); i!=cl->playerint.end(); i++)
 	{

lib/rmg/CRmgTemplateZone.cpp

@@ -515,8 +515,8 @@ void CRmgTemplateZone::placeObject(CMapGenerator* gen, CGObjectInstance* object,
 
 	auto points = object->getBlockedPos();
 	if (object->isVisitable())
-		points.emplace(pos + object->getVisitableOffset());
-	points.emplace(pos);
+		points.insert(pos + object->getVisitableOffset());
+	points.insert(pos);
 	for(auto const &p : points)
 	{		
 		if (tileinfo.find(pos + p) != tileinfo.end())