twelfppr uses Cabal for build management, so you should be able to compile and install it with a simple command:
(Ignore the Makefile)
This should pull down the (few) dependencies and install the twelfppr binary in ~/.cabal/bin.
Now try running it on some signature:
~/.cabal/bin/twelfppr -t ~/twelf/bin/twelf-server sources.cfg
Note that the signature defined by sources.cfg should be loadable by Twelf without error, or
twelfppr will fail with a cryptic error message.