> $ python >>> import ctypes >>> import ctypes.util >>> ctypes.util.find_library('libusb-1.0')
> Does it work on your environment? No. But it does give a hint! ===================== Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/ctypes/__init__.py", line 423, in LoadLibrary return self._dlltype(name) File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/ctypes/__init__.py", line 345, in __init__ self._handle = _dlopen(self._name, mode) OSError: dlopen(libusb-1.0.dylib, 6): no suitable image found. *Did find:* * /usr/local/lib/libusb-1.0.dylib: mach-o, but wrong architecture* >>> ========================== Thus: ==> file libusb-1.0.0.dylib libusb-1.0.0.dylib: Mach-O 64-bit dynamically linked shared library x86_64 so.... I need 32 bit. ok then: ==> sudo rm -f /usr/local/lib/libusb* ==> sudo make clean ==> sudo ./configure CXXFLAGS="-m32 -arch 386" CFLAGS="-m32" ==> sudo make ==> sudo make install Python ctypes check now returns: >>> import ctypes >>> import ctypes.util as x >>> x.find_library('libusb-1.0') '/usr/local/lib/libusb-1.0.dylib' >>> ...which looks good, so I messed with some more testcode, and as long as I do this first... mybackend = usb.backend.libusb1.get_backend(find_library=lambda x: "/usr/local/lib/libusb-1.0.dylib') ...then usb.lib and usb.core act reasonably. Still not sure why it's not finding the library itself, though. Thanks for the help, everyone. Kudos to the bunch of yas. :)
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