I've installed gpsd 3.10 (also tried 3.16) on CentOS 7 Minimal (yum install gpsd). The following dependencies have been pulled in as well: bluez-libs, gpsd-libs, libusbx. It seems to start up fine automatically as a service, however, if I run it from the command line, it produces no output. Even running "gpsd -h" produces no help output at all. Seems like something pretty fundamental, so I'm trying to figure out if there's a missing dependency or other environment setup that I'm missing.
Any ideas as to what I'm missing?