Disable RTTI everywhere and fix Linux compilation

Former-commit-id: c8c0f11725d2e5b6c6da6dc3ab11f0eda065094f [formerly c2977e388c70ba7ccdf52f9eb97d7fe71ed6f4cf] [formerly 73c0d0759a6c9cad05dff59bff486f99fde336b6 [formerly 96a6e52ba5c97fd3a107fed5d11738466bd53f7e]]
Former-commit-id: c6a193ee5ccb07a40a74719937dbf224ad22081e [formerly 5f275dc02a44bd2ee54f6d926338ddfe388f565b]
Former-commit-id: e35640a20ac2269f96b75998e56fcba2fdbf6f00

tests/SDK/NDK/System.cpp

@@ -6,15 +6,23 @@ namespace
 	class TestSystem : public Ndk::System<TestSystem>
 	{
 		public:
-			TestSystem()
+			TestSystem(int value) :
+			m_value(value)
 			{
 			}
 
+			int GetValue() const
+			{
+				return m_value;
+			}
+
 			~TestSystem() = default;
 
 			static Ndk::SystemIndex systemIndex;
 
 		private:
+			int m_value;
+
 			void OnUpdate(float elapsedTime) override
 			{
 			}
@@ -27,7 +35,7 @@ SCENARIO("System", "[NDK][SYSTEM]")
 {
 	GIVEN("Our TestSystem")
 	{
-		TestSystem testSystem;
+		TestSystem testSystem(666);
 
 		WHEN("We clone it")
 		{
@@ -35,7 +43,7 @@ SCENARIO("System", "[NDK][SYSTEM]")
 
 			THEN("We should get a copy")
 			{
-				REQUIRE(dynamic_cast<TestSystem*>(clone.get()) != nullptr);
+				REQUIRE(static_cast<TestSystem*>(clone.get())->GetValue() == 42);
 			}
 		}
 	}