Happened to come across the solution to this. Simply build libusb with
./configure CC="gcc -m32"
make
sudo make install
Then install pyusb.
On Thu, May 6, 2010 at 11:10 AM, Wander Lairson
<wander.lair...@gmail.com> wrote:
> I guess it is a libusb build issue. Try to build and run any of the libusb
> samples.
>
> 2010/5/6 Mike Lawrence <mike.lawre...@dal.ca>
>>
>> See below for the debug trace. Looks like it finds libusb-1.0, but
>> claims that it was built using the wrong architecture. When installing
>> libusb-1.0, I downloaded the source then ran
>> ./configure;make;sudo make install
>> as usuall, and didn't see any significant errors. Below the pyusb
>> debug trace, I'll paste the log produced when I install libusb-1.0...
>>
>> ########
>> # PyUSB debug trace
>> ########
>> 2010-05-06 08:13:16,588 ERROR:usb.backend.libusb10:Error loading
>> libusb 1.0 backend
>> Traceback (most recent call last):
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/backend/libusb10.py",
>> line 588, in get_backend
>> _lib = _load_library()
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/backend/libusb10.py",
>> line 165, in _load_library
>> l = CDLL(libname)
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/ctypes/__init__.py",
>> line 353, in __init__
>> self._handle = _dlopen(self._name, mode)
>> OSError: dlopen(/usr/local/lib/libusb-1.0.dylib, 6): no suitable image
>> found. Did find:
>> /usr/local/lib/libusb-1.0.dylib: mach-o, but wrong architecture
>> 2010-05-06 08:13:16,690 ERROR:usb.backend.openusb:Error loading OpenUSB
>> backend
>> Traceback (most recent call last):
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/backend/openusb.py",
>> line 588, in get_backend
>> _lib = _load_library()
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/backend/openusb.py",
>> line 149, in _load_library
>> raise OSError('USB library could not be found')
>> OSError: USB library could not be found
>> 2010-05-06 08:13:16,693 ERROR:usb.backend.libusb01:Error loading
>> libusb 0.1 backend
>> Traceback (most recent call last):
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/backend/libusb01.py",
>> line 539, in get_backend
>> _lib = _load_library()
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/backend/libusb01.py",
>> line 180, in _load_library
>> raise OSError('USB library could not be found')
>> OSError: USB library could not be found
>> Traceback (most recent call last):
>> File "<stdin>", line 1, in <module>
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/legacy.py",
>> line 326, in busses
>> return (Bus(),)
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/legacy.py",
>> line 322, in __init__
>> self.devices = [Device(d) for d in core.find(find_all=True)]
>> File
>> "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/usb/core.py",
>> line 819, in find
>> raise ValueError('No backend available')
>> ValueError: No backend available
>>
>>
>> ########
>> # libusb-1.0 install log
>> ########
>>
>> mal:libusb-1.0.8 mike$ ./configure
>> checking for a BSD-compatible install... /usr/bin/install -c
>> checking whether build environment is sane... yes
>> checking for a thread-safe mkdir -p... ./install-sh -c -d
>> checking for gawk... no
>> checking for mawk... no
>> checking for nawk... no
>> checking for awk... awk
>> checking whether make sets $(MAKE)... yes
>> checking for gcc... gcc
>> checking whether the C compiler works... yes
>> checking for C compiler default output file name... a.out
>> checking for suffix of executables...
>> checking whether we are cross compiling... no
>> checking for suffix of object files... o
>> checking whether we are using the GNU C compiler... yes
>> checking whether gcc accepts -g... yes
>> checking for gcc option to accept ISO C89... none needed
>> checking for style of include used by make... GNU
>> checking dependency style of gcc... gcc3
>> checking build system type... i386-apple-darwin10.3.0
>> checking host system type... i386-apple-darwin10.3.0
>> checking for a sed that does not truncate output... /usr/bin/sed
>> checking for grep that handles long lines and -e... /usr/bin/grep
>> checking for egrep... /usr/bin/grep -E
>> checking for fgrep... /usr/bin/grep -F
>> checking for ld used by gcc...
>> /usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld
>> checking if the linker (/usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld)
>> is GNU ld... no
>> checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm
>> checking the name lister (/usr/bin/nm) interface... BSD nm
>> checking whether ln -s works... yes
>> checking the maximum length of command line arguments... 196608
>> checking whether the shell understands some XSI constructs... yes
>> checking whether the shell understands "+="... yes
>> checking for /usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld option to
>> reload object files... -r
>> checking for objdump... no
>> checking how to recognize dependent libraries... pass_all
>> checking for ar... ar
>> checking for strip... strip
>> checking for ranlib... ranlib
>> checking command to parse /usr/bin/nm output from gcc object... ok
>> checking for dsymutil... dsymutil
>> checking for nmedit... nmedit
>> checking for lipo... lipo
>> checking for otool... otool
>> checking for otool64... no
>> checking for -single_module linker flag... yes
>> checking for -exported_symbols_list linker flag... yes
>> checking how to run the C preprocessor... gcc -E
>> checking for ANSI C header files... yes
>> checking for sys/types.h... yes
>> checking for sys/stat.h... yes
>> checking for stdlib.h... yes
>> checking for string.h... yes
>> checking for memory.h... yes
>> checking for strings.h... yes
>> checking for inttypes.h... yes
>> checking for stdint.h... yes
>> checking for unistd.h... yes
>> checking for dlfcn.h... yes
>> checking for objdir... .libs
>> checking if gcc supports -fno-rtti -fno-exceptions... no
>> checking for gcc option to produce PIC... -fno-common -DPIC
>> checking if gcc PIC flag -fno-common -DPIC works... yes
>> checking if gcc static flag -static works... no
>> checking if gcc supports -c -o file.o... yes
>> checking if gcc supports -c -o file.o... (cached) yes
>> checking whether the gcc linker
>> (/usr/libexec/gcc/i686-apple-darwin10/4.2.1/ld) supports shared
>> libraries... yes
>> checking dynamic linker characteristics... darwin10.3.0 dyld
>> checking how to hardcode library paths into programs... immediate
>> checking whether stripping libraries is possible... yes
>> checking if libtool supports shared libraries... yes
>> checking whether to build shared libraries... yes
>> checking whether to build static libraries... yes
>> checking for inline... inline
>> checking whether gcc and cc understand -c and -o together... yes
>> checking operating system... Darwin/MacOS X
>> checking sys/timerfd.h usability... no
>> checking sys/timerfd.h presence... no
>> checking for sys/timerfd.h... no
>> checking whether TFD_NONBLOCK is declared... no
>> checking whether to use timerfd for timing... no (header not available)
>> configure: creating ./config.status
>> config.status: creating libusb-1.0.pc
>> config.status: creating Makefile
>> config.status: creating libusb/Makefile
>> config.status: creating examples/Makefile
>> config.status: creating doc/Makefile
>> config.status: creating doc/doxygen.cfg
>> config.status: creating config.h
>> config.status: executing depfiles commands
>> config.status: executing libtool commands
>>
>>
>> mal:libusb-1.0.8 mike$ make
>> make all-recursive
>> Making all in libusb
>> CC libusb_1_0_la-core.lo
>> CC libusb_1_0_la-descriptor.lo
>> CC libusb_1_0_la-io.lo
>> io.c:1674: warning: ‘handle_timeout’ defined but not used
>> io.c:1688: warning: ‘handle_timeouts_locked’ defined but not used
>> CC libusb_1_0_la-sync.lo
>> CC libusb_1_0_la-darwin_usb.lo
>> os/darwin_usb.c: In function ‘event_thread_main’:
>> os/darwin_usb.c:286: warning: cast to pointer from integer of different
>> size
>> CCLD libusb-1.0.la
>> Making all in doc
>> make[2]: Nothing to be done for `all'.
>> make[2]: Nothing to be done for `all-am'.
>>
>>
>> mal:libusb-1.0.8 mike$ sudo make install
>> Password:
>> Making install in libusb
>> test -z "/usr/local/lib" || .././install-sh -c -d "/usr/local/lib"
>> /bin/sh ../libtool --mode=install /usr/bin/install -c
>> libusb-1.0.la '/usr/local/lib'
>> libtool: install: /usr/bin/install -c .libs/libusb-1.0.0.dylib
>> /usr/local/lib/libusb-1.0.0.dylib
>> libtool: install: (cd /usr/local/lib && { ln -s -f libusb-1.0.0.dylib
>> libusb-1.0.dylib || { rm -f libusb-1.0.dylib && ln -s
>> libusb-1.0.0.dylib libusb-1.0.dylib; }; })
>> libtool: install: /usr/bin/install -c .libs/libusb-1.0.lai
>> /usr/local/lib/libusb-1.0.la
>> libtool: install: /usr/bin/install -c .libs/libusb-1.0.a
>> /usr/local/lib/libusb-1.0.a
>> libtool: install: chmod 644 /usr/local/lib/libusb-1.0.a
>> libtool: install: ranlib /usr/local/lib/libusb-1.0.a
>> ----------------------------------------------------------------------
>> Libraries have been installed in:
>> /usr/local/lib
>>
>> If you ever happen to want to link against installed libraries
>> in a given directory, LIBDIR, you must either use libtool, and
>> specify the full pathname of the library, or use the `-LLIBDIR'
>> flag during linking and do at least one of the following:
>> - add LIBDIR to the `DYLD_LIBRARY_PATH' environment variable
>> during execution
>>
>> See any operating system documentation about shared libraries for
>> more information, such as the ld(1) and ld.so(8) manual pages.
>> ----------------------------------------------------------------------
>> test -z "/usr/local/include/libusb-1.0" || .././install-sh -c -d
>> "/usr/local/include/libusb-1.0"
>> /usr/bin/install -c -m 644 libusb.h '/usr/local/include/libusb-1.0'
>> Making install in doc
>> make[2]: Nothing to be done for `install-exec-am'.
>> make[2]: Nothing to be done for `install-data-am'.
>> make[2]: Nothing to be done for `install-exec-am'.
>> test -z "/usr/local/lib/pkgconfig" || ./install-sh -c -d
>> "/usr/local/lib/pkgconfig"
>> /usr/bin/install -c -m 644 libusb-1.0.pc '/usr/local/lib/pkgconfig'
>>
>>
>> ------------------------------------------------------------------------------
>> _______________________________________________
>> pyusb-users mailing list
>> pyusb-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
>
> ------------------------------------------------------------------------------
>
> _______________________________________________
> pyusb-users mailing list
> pyusb-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
>
------------------------------------------------------------------------------
Enable your software for Intel(R) Active Management Technology to meet the
growing manageability and security demands of your customers. Businesses
are taking advantage of Intel(R) vPro (TM) technology - will your software
be a part of the solution? Download the Intel(R) Manageability Checker
today! http://p.sf.net/sfu/intel-dev2devmar
_______________________________________________
pyusb-users mailing list
pyusb-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/pyusb-users
