[Paraview] VRPlugin: small build issue with vrpn

[Patrick O'Leary]

As I remember, libusb is only required for testing currently if the
VRPlugin and VRPN are enabled. The current test for this case does use
libusb, even though this may not be correct for the environment.

It may or may not be necessary for VRPN to use libusb given the immersive
environment setup.

If you don't use libusb in your implementation, and you don't perform
tests, then you could make this blank in the current implementation. We
should probably ask if you use libusb with VRPN, then we will need to ask
for VRPN_LIBUSB_INCLUDE_DIR, because it is routinely in a non-standard
location.

Patrick


On Tue, Jan 29, 2013 at 4:42 PM, Russell M. Taylor II <taylorr at cs.unc.edu>wrote:

> VRPN can handle a number of non-LIBUSB devices.  It handles many devices
> using the HID interface.  It handles others using RS-232 or native O/S
> interfaces.  Depending on what device you need, you may or may not need
> LIBUSB.
>
> Russ
>
>
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