Please, please, be sure to check the prerequisites. If you miss one of them, NavIt may build, but you may have no gui.
See the list detailed per distro :
- OpenSuse dependencies
- Gentoo dependencies
- Debian dependencies
- Ubuntu dependencies
- Fedora dependencies
In general you will need one of ksvg2png, rsvg-convert or Inkscape to build pre-scaled icons in the xpm directory. Configure.in will pick up on whichever one you have installed.