[sane-devel] How to find out if USB is available for compilation

[paul beard]

I guess I don't understand this part of it: the presence of a 
library or header doesn't mean there is an accessible device, does 
it? I realize looking at dmesg output is less than optimal, but 
I'm not sure how else to discover and access devices.

Oliver Rauch wrote:

> Hello Paul,
> 
> this is no solution for the backend. May be it could be a way for
> configure to find out if USB is available, but I would prefer a test
> for an include file or a library.
> 
> Are the other USB backends compiled on systems that do not support USB?