[Matplotlib-devel] [Wheel-builders] Manylinux external library test case - matplotlib, tk

[Matthew Brett]

On Tue, May 10, 2016 at 6:38 PM, Nathaniel Smith <njs at pobox.com> wrote:
> On Tue, May 10, 2016 at 3:09 PM, Leonardo Rochael Almeida
> <leorochael at gmail.com> wrote:
>> On 10 May 2016 at 18:52, Matthew Brett <matthew.brett at gmail.com> wrote:
>>>
>>> On Tue, May 10, 2016 at 5:26 PM, Matthew Brett <matthew.brett at gmail.com>
>>> wrote:
>>> >> [...]
>>> >>
>>> >> This would probably look like:
>>> >>
>>> >> _tkagg.so has a DT_NEEDED entry naming tkinter.so (or whatever Python
>>> >> calls
>>> >> this module)
>>> >>
>>> >> Before loading _tkagg.so, we use Python level introspection figure out
>>> >> where
>>> >> tkinter.so lives
>>> >>
>>> >> We add its directory to LD_LIBRARY_PATH
>>> >>
>>> >> we import _tkagg.so
>>> >>
>>> >> We take its directory back off of LD_LIBRARY_PATH
>>> >>
>>> >> Very weird, but I can't see why it wouldn't work, and probably more
>>> >> reliable
>>> >> than anything where we try to reimplement the dynamic loader's search
>>> >> logic
>>> >> ourselves.
>>> >
>>> > Nice - yes - it does work in a first-pass test - I'll look into
>>> > automating that.
>>>
>>> Ah - except I do not believe it is possible to change the linker path
>>> for Python modules, within the Python process:
>>>
>>> http://www.gossamer-threads.com/lists/python/python/393770#393770
>
> Doh :-(

Any other suggestions?

I guess this will be a problem for the external library PEP?

Matthew