Refactor CMake code related to compiler warnings, enable some additional warnings (#6355)

unit_tests/engine/offline_facade.cpp

@@ -119,7 +119,7 @@ class ContiguousInternalMemoryDataFacade<routing_algorithms::offline::Algorithm>
 
     ContiguousInternalMemoryDataFacade() {}
 
-    ~ContiguousInternalMemoryDataFacade() {}
+    ~ContiguousInternalMemoryDataFacade() override {}
 
     unsigned GetNumberOfNodes() const { return 0; }
 

unit_tests/util/packed_vector.cpp

@@ -28,11 +28,11 @@ BOOST_AUTO_TEST_CASE(insert_and_retrieve_packed_test)
 
     std::mt19937 rng;
     rng.seed(1337);
-    std::uniform_int_distribution<std::mt19937::result_type> dist(0, max_id);
+    std::uniform_int_distribution<std::uint64_t> dist(0, max_id);
 
     for (std::size_t i = 0; i < num_test_cases; i++)
     {
-        OSMNodeID r{static_cast<std::uint64_t>(dist(rng))}; // max 33-bit uint
+        OSMNodeID r{dist(rng)}; // max 33-bit uint
 
         packed_ids.push_back(r);
         original_ids.push_back(r);