The ctypes.util.find_library() function in Python 2.6.4 is currently
broken on MIPS platforms.
Which mostly affects OpenWrt users running Linux on MIPS based access points.
The attached patches include a quick fix around that problem for PyUSB 1.0.
cu andreas
Index: usb/backend/libusb01.py
===================================================================
--- a/usb/backend/libusb01.py 2010-04-13 20:15:19.000000000 +0200
+++ b/usb/backend/libusb01.py 2010-06-23 14:24:04.614797173 +0200
@@ -176,6 +176,14 @@
return CDLL('cygusb0.dll')
except:
_logger.error('Libusb 0 could not be loaded in cygwin', exc_info=True)
+
+ # Fix for broken util.find_library on OpenWRT / MIPS plattforms
+ elif os.uname()[4] == 'mips':
+ try:
+ return CDLL('libusb-0.1.so.4')
+ except:
+ _logger.error('Libusb 0 could not be loaded', exc_info=True)
+
raise OSError('USB library could not be found')
return CDLL(libname)
Index: usb/backend/libusb10.py
===================================================================
--- a/usb/backend/libusb10.py 2010-04-13 20:15:19.000000000 +0200
+++ b/usb/backend/libusb10.py 2010-06-23 14:24:04.614797173 +0200
@@ -28,6 +28,7 @@
from ctypes import *
import ctypes.util
+import os
import usb.util
import array
import sys
@@ -156,6 +157,12 @@
return CDLL('cygusb-1.0-0.dll')
except Exception:
_logger.error('Libusb 1.0 could not be loaded in cygwin', exc_info=True)
+ # Fix for broken util.find_library on OpenWRT / MIPS plattforms
+ elif os.uname()[4] == 'mips':
+ try:
+ return CDLL('libusb-1.0.so')
+ except:
+ _logger.error('Libusb 1.0 could not be loaded', exc_info=True)
raise OSError('USB library could not be found')
# Windows backend uses stdcall calling convention
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