2014-11-03 14:48 GMT-02:00 Anony Mous <fyng...@gmail.com>:
>> If libusb(x) has been installed with Homebrew:
> It hasn't. This is a fresh compile under 10.6.8. I am trying -- hard -- to
> avoid using homebrew and similar. Last time I tried, which was not with
> homebrew but macports, it wrecked my system by overwriting things I was
> using with incompatible versions and required a format and reinstall of the
> OS.
>
> It's a library. It should be reasonable to compile and install. I have done
> this many other times with many other libraries and never run into a
> problem.
>
> So that's where I am about homebrew. Nervous. Very nervous.
>
>>
> Adding libusb path to DYLD_LIBRARY_PATH should be enough.
>
> in .bash-profile, I have these:
>
>
> export DYLD_FALLBACK_LIBRARY_PATH=/usr/local/lib
> export DYLD_LIBRARY_PATH=/usr/local/lib
> export PYUSB_DEBUG_LEVEL=debug
>
The of the environment variable change recently to PYUSB_DEBUG.
> env returns (each cut from lots of results and pasted here):
>
> DYLD_FALLBACK_LIBRARY_PATH=/usr/local/lib
> DYLD_LIBRARY_PATH=/usr/local/lib
> PYUSB_DEBUG_LEVEL=debug
>
> The libraries are definitely in /usr/local/lib viz:
>
> bash-3.2$ ls -l /usr/local/lib/libusb*
> -rwxr-xr-x 1 root wheel 81480 Oct 28 14:20
> /usr/local/lib/libusb-1.0.0.dylib
> -rw-r--r-- 1 root wheel 245792 Oct 28 14:20 /usr/local/lib/libusb-1.0.a
> lrwxr-xr-x 1 root wheel 18 Oct 28 14:20
> /usr/local/lib/libusb-1.0.dylib -> libusb-1.0.0.dylib
> -rwxr-xr-x 1 root wheel 936 Oct 28 14:20 /usr/local/lib/libusb-1.0.la
>
> Here's my test code:
>
> =============
>
> #!/usr/bin/python
>
> import usb.core
> import usb.backend.libusb1
>
> testmode = 1
>
> if testmode == 0:
> mybackend = usb.backend.libusb1.get_backend(find_library=lambda x:
> "/usr/local/lib/libusb-1.0.0.dylib")
>
> if mybackend == None:
> print "Failure to evaluate library name"
> print "backend = "+str(mybackend)
> else:
> dev = usb.core.find(idVendor=0xfffe, idProduct=0x0001, backend=mybackend)
> if dev is None:
> raise ValueError('Our device is not connected')
> elif testmode == 1:
> dev = usb.core.find(idVendor=0xfffe, idProduct=0x0001)
> if dev is None:
> raise ValueError('Our device is not connected')
>
> In testmode 0:
>
> bash-3.2$ ./pm-ben.py
> Failure to evaluate library name
> backend = None
>
> In testmode 1:
>
> bash-3.2$ ./pm-ben.py
> Traceback (most recent call last):
> File "./pm-ben.py", line 19, in <module>
> dev = usb.core.find(idVendor=0xfffe, idProduct=0x0001)
> File "/Library/Python/2.6/site-packages/usb/core.py", line 1199, in find
> raise ValueError('No backend available')
> ValueError: No backend available
>
> ========
>
> It doesn't appear that the DEBUG log command does anything, but this is
> still just trying to get libusb to wake up, so I wouldn't expect it to.
>
> Anything in there that is helpful to anyone?
>
> --Ben
> fyng...@gmail.com
>
>
> ------------------------------------------------------------------------------
>
> _______________________________________________
> pyusb-users mailing list
> pyusb-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/pyusb-users
>
--
Best Regards,
Wander Lairson Costa
------------------------------------------------------------------------------
_______________________________________________
pyusb-users mailing list
pyusb-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/pyusb-users
