Can't find shared library libusb

James Cameron quozl at
Sun Oct 17 20:51:15 EDT 2010

On Fri, Oct 15, 2010 at 05:24:30PM -0200, Emiliano Pastorino wrote:
> I'm trying to use libusb, but I'm getting this behaviour in python:
> >> from ctypes.util import find_library
> >> find_library('usb')
> >>
> (returned None)

I see this too on os852, on Debian, on Ubuntu 10.10, and on Fedora 11.

On the other hand, cddl.LoadLibrary worked fine.

An strace of find_library showed ldconfig, gcc and ld were executed, and
this agrees with the documentation:

James Cameron

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