[Mobile-sig] Fwd: Re: [Python-Dev] Import Fails in setup.py On Android

[Cyd Haselton]

Since i'm working on an Android tablet, I am forwarding the original message I sent to python-dev instead of re-typing the entire thing.

To summarize: I'm building in a fakechroot environment on Android that supports dynamic calls to libc only.  Something in the importlib._bootstrap process is not linking to...or has not been linked to...the necessary libraries (I've checked the module...it is being linked to -lc -ldl) but I can't figure out what...as there's not a lot in the python docs on it.

I'm currently reading through the importlib docs but any help would be greatly appreciated.


-------- Original Message --------
From: Eric Snow <ericsnowcurrently at gmail.com>
Sent: February 3, 2015 12:10:54 AM CST
To: Cyd Haselton <chaselton at gmail.com>
Cc: Python-Dev <python-dev at python.org>
Subject: Re: [Python-Dev] Import Fails in setup.py On Android

On Mon, Feb 2, 2015 at 12:36 PM, Cyd Haselton <chaselton at gmail.com> wrote:
> After fixing a segfault issue (many thanks Ryan) I'm back to the same issue
> I was having with Python 2.7.8; the newly built python throws an undefined
> reference to dlopen when running setup.py...specifically when importing
> just-built extensions
>
> I've managed to narrow the problem down to the following line:
>
> importlib._bootstrap._SpecMethods(spec).load()

That call is where modules are created (and executed) via the loader
designated for the module by the import machinery.  So a problem here
may simply reflect a problem with the loader.  Which module is being
imported when you run into trouble?  Is it a C-extension module?

Also keep in mind that basically everything in importlib._bootstrap is
frozen into your Python binary when you build Python (or should be).
So if you are seeing any errors related to something missing or broken
in importlib._bootstrap, it could be related to the build step where
importlib gets frozen.

Either way, more info (e.g. a traceback) would be great if you need more help.

-eric

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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