restore libosrm interface for corech, fallback to ch

src/osrm/osrm.cpp

@@ -43,8 +43,14 @@ OSRM::OSRM(engine::EngineConfig &config)
     // Now, check that the algorithm requested can be used with the data
     // that's available.
 
-    if (config.algorithm == EngineConfig::Algorithm::CH)
+    if (config.algorithm == EngineConfig::Algorithm::CH ||
+        config.algorithm == EngineConfig::Algorithm::CoreCH)
     {
+        if (config.algorithm == EngineConfig::Algorithm::CoreCH)
+        {
+            util::Log(logWARNING) << "Using CoreCH is deprecated. Falling back to CH";
+            config.algorithm = EngineConfig::Algorithm::CH;
+        }
         bool ch_compatible = engine::Engine<CH>::CheckCompatibility(config);
 
         // throw error if dataset is not usable with CH

src/tools/contract.cpp

@@ -60,6 +60,12 @@ return_code parseArguments(int argc,
             &contractor_config.updater_config.turn_penalty_lookup_paths)
             ->composing(),
         "Lookup files containing from_, to_, via_nodes, and turn penalties to adjust turn weights")(
+        "level-cache,o",
+        boost::program_options::value<bool>(&contractor_config.use_cached_priority)
+            ->default_value(false),
+        "DEPRECATED: Will always be false. Use .level file to retain the contraction level for "
+        "each "
+        "node from the last run.")(
         "edge-weight-updates-over-factor",
         boost::program_options::value<double>(
             &contractor_config.updater_config.log_edge_updates_factor)