Re: building libpcap without usb support

[Guy Harris <guy () alum mit edu>]

On Jul 6, 2014, at 2:25 PM, Michael Richardson <mcr () sandelman ca> wrote:

> Romain Francoise <romain () orebokech com> wrote:
> > > <linux/usbdevice_fs.h> is a kernel header; does USB sniffing require
> > > libusb-dev at all?
>
> > Nope. libusb is only required for canusb support.
>
> Ah, that's a bit confusing.
>
> There is a --disable-canusb, I think, so I'll try building libpcap
> with that option, which ought to eliminate needing to link with -lusb.
> I wonder if canusb sniffing is sufficiently rare, and forcing people
> to have libusb-dev around is sufficiently annoying that we should
> turn that off by default.

I've changed the configure script in the trunk and the 1.6 branch so that, instead of looking for the header, it checks 
whether it can build, with -lusb-1.0, a program that calls libusb_init().

See if that fixes the problem.
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