I suggest reading it's documentation for best graphical and audio output, unless of course your system comes with development packages for these.
http://www.libsdl.org/projects/SDL_mixer/
None
Search for "sdl11-config" within all makefiles in sys/unix/ and replace with "sdl-config".
Simply follow the instuctions for each of them to build and install the respective variant on your system.
in the source code root directory type "make help" to receive instruction on installing vultures to a location within your home directory.
NOTE This form of installation should not be used for general gameplay, unless you are wanting to look at the game briefly and do not want it installed system-wide.