The legacy version is the version 1.3
The new version is the version 2.0. It would be based on SDL2 only
Distribution information.
If you link wxWidget with SDL, you will need to be sure it is SDL2 or upgrade.
You can build wxWidget with SDL2 with the following trick
export SDL_CONFIG=/usr/bin/sdl2-config
./configure --with-sdl .....
Gregory Hainaut