Prerequisites:

- ttusb_dec_reset depends on libusb; is you don't need it
  you can uncomment it from util/Makefile

Building and installing:

$ make bindir=/usr/local/bin datadir=/usr/local/share libdir=/usr/local/lib
$ make bindir=/usr/local/bin datadir=/usr/local/share libdir=/usr/local/lib DESTDIR=/foo/bar install