- libusb-1.0 >= 1.0.16 (optional, used by some drivers)
- libftdi >= 0.16 or libftdi1 >= 1.0 (optional, used by some drivers)
- libgpib (optional, used by some drivers)
+ - libieee1284 (optional, used by some drivers)
- check >= 0.9.4 (optional, only needed to run unit tests)
- doxygen (optional, only needed for the C API docs)
- graphviz (optional, only needed for the C API docs)