Reply in body of email below for clarity On February 2, 2015 4:09:20 PM CST, "Frank, Matthew I" <matthew.i.fr...@intel.com> wrote: >There’s now (as of a couple days ago) a python mobile-sig >(https://mail.python.org/mailman/listinfo/mobile-sig). While that >group is much smaller than python-dev and probably not as knowledgeable >about the Cpython source base, that’s where you’re going to find folks >who have a vested interest in getting Python working on mobile >platforms like Android. (And who would be interested in hearing about >your experiences, no matter whether they can help you or not.) >
Thanks for the notification. I'll definitely shoot them an email. >What you are doing (trying to run the entire C compiler toolchain on an >Android machine, instead of using the cross-compilers that come in >Google’s Android NDK (native development kit)) is way outside the >mainstream. (I.e., you’re not going to find very many people trying to >do this here or anywhere.) There are several IDEs made for on-device compilation that include the GCC toolchain ported to the Android platform. http://www.spartacusrex.com/terminalide.htm http://kevinboone.net/kbox2_how_it_works.html I use the latter of the two (but contribute binaries to the former) because of its focus on emulating a Linux filesystem in which to run software. > >Since you compiled all the libraries that you are linking against, >there is some possibility (likelihood) that the problem is in one of >those libraries, not anywhere in the CPython source. (Some other >library was compiled without the necessary –dl flag.) The right way to >track down this problem (no matter where it is) is to run under gdb and >type “where” when the program crashes. > I did not compile all of the libraries that I'm linking against. The GCC port I am using makes use of a sysroot, which contains the necessary Android system libs and includes. The KBOX environment is built on a fakechroot that supports dynamic calls to Android's libc (and, I suspect, those functions that USUALLY reside in a normal libc...like dlopen) only. Provided a build includes the correct -ldl -lc links, it will work in KBOX. >The reason I suspect that the problem is in one of the libraries you >compiled before building Python, rather than a problem in the CPython >sources or build scripts, is that I don’t have this problem when I >cross-compile Python 3.4.2 on a Linux machine, then take the result and >copy it over to the Android machine. I’ve posted instructions and >patches for successfully performing this cross compilation (for Android >KitKat running on an x86) here: >https://github.com/wandering-logic/android_x86_python-3.4. > See answer above. I'm working in an environment on the Android device. Hopefully this clarifies things. I'll re-post this over at python-sig. >Best, >-Matt > >From: Cyd Haselton [mailto:chasel...@gmail.com] >Sent: Monday, February 02, 2015 3:25 PM >To: Ryan Gonzalez >Cc: Python-Dev >Subject: Re: [Python-Dev] Import Fails in setup.py On Android > >No traceback unfortunately...the fakechroot in the environment throws >the error and setup.py<http://setup.py> fails. > >I'll roll back that change...any idea where I could find info about the >original method? >On February 2, 2015 3:17:54 PM CST, Ryan Gonzalez ><rym...@gmail.com<mailto:rym...@gmail.com>> wrote: >In reality, things just got broken even more. I don't know when that >patch was created, but it's now very out of date: importlib._bootstrap >has no load function. That's what the error you're getting is telling >you. Since it isn't getting to load anything, the issue seems "solved". >Not really. > >What's the full traceback for the undefined reference exception? > >On Mon, Feb 2, 2015 at 2:04 PM, Cyd Haselton ><chasel...@gmail.com<mailto:chasel...@gmail.com>> wrote: >Update: While waiting for replies I made the change referenced here: >https://bugs.python.org/review/5309/diff2/12811:12826/setup.py?context=3&column_width=80 > >specifically changing >importlib. _bootstrap._SpecMethods(spec).load() >to >importlib._bootstrap.load(spec) > >I no longer get a terminating 'undefined reference to dlopen' error, >but I do get 'importing extensions failed' errors for each >extension...like this: > >*** WARNING: importing extension "_pickle" failed with <class >'AttributeError'>: 'module' object has no attribute 'load' > >On February 2, 2015 1:36:29 PM CST, Cyd Haselton ><chasel...@gmail.com<mailto:chasel...@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<http://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() > >Googling this brings up a few hits from >bugs.python.org<http://bugs.python.org> and not much else. I'm new to >Python; any ideas what this does...or where I can read up on it for >troubleshooting purposes? > >-- >Sent from my Android device with K-9 Mail. Please excuse my brevity. > >_______________________________________________ >Python-Dev mailing list >Python-Dev@python.org<mailto:Python-Dev@python.org> >https://mail.python.org/mailman/listinfo/python-dev >Unsubscribe: >https://mail.python.org/mailman/options/python-dev/rymg19%40gmail.com > > > >-- >Ryan >If anybody ever asks me why I prefer C++ to C, my answer will be >simple: "It's becauseslejfp23(@#Q*(E*EIdc-SEGFAULT. Wait, I don't think >that was nul-terminated." >Personal reality distortion fields are immune to contradictory >evidence. - srean >Check out my website: http://kirbyfan64.github.io/ > >-- >Sent from my Android device with K-9 Mail. Please excuse my brevity. -- Sent from my Android device with K-9 Mail. 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