[Bug 898172] Re: ctypes broken on armhf
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898172 at bugs.launchpad.net
Fri Dec 2 08:15:45 UTC 2011
** Changed in: python
Status: Unknown => New
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ctypes broken on armhf
Status in Python:
Status in “python2.6” package in Ubuntu:
Status in “python2.7” package in Ubuntu:
Status in “python3.2” package in Ubuntu:
Python's ctypes allows dynamically loading libraries. On linux, it
parses ldconfig -p output for a given library name, skipping over
incompatible ABIs. ABI is derived from uname output, which is
incorrect. Currently, the code can't cope with "hard-float" in the
ldconfig -p output on armhf.
I will attach a debdiff which allows ctypes to work on either armel or
armhf, but wont work on a biarch or multiarch armel + armhf system.
The code should be redesigned to check the real ABI, not the uname
output; one option to do so is to check the ABI of the currently
running executable, e.g. ldd on sys.executable as done elsewhere in
the script, but still seems fragile; another option is to look at
/proc/$pid/maps (probably not portable); another option is to ask libc
to do the loading (seems the safest).
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