README is the first document you should read before anything.
Docs provides more information if you want to go further.
For how to build from source code, please go to Building from source
For how to build data, please go to document here: Mjolnir: Getting started Guide
Make sure valhalla_tiles.tar and valhalla.json is correctly generated.
For debugging offline MapMatching, you could generate valhalla_run_map_match by modifying CMakeFile:
-set(valhalla_programs valhalla_run_route valhalla_run_isochrone)
+set(valhalla_programs valhalla_run_route valhalla_run_isochrone valhalla_run_map_match)The config for valhalla_run_map_match is valhalla.json
./valhalla_run_map_match path/valhalla.json
The input for valhalla_run_map_match is {lon lat} pair
13.225727 52.507321
13.224886 52.507435
13.223781 52.507598
13.222418 52.507856
For debugging Routing, you could try with valhalla_run_route by
valhalla_run_route -j '{"locations":[{"lat":52.529816,"lon":13.425419,"type":"break","city":"Berlin"},{"lat":52.510354,"lon":13.490896,"type":"break","city":"berlin"}],"costing":"auto","directions_options":{"units":"miles"}}' --config path/valhalla.json