2.x,3.x iOS static build: Fatal Python error: exceptions bootstrapping error.

[ghost]

BPO	14866
Nosy	@ronaldoussoren, @amauryfa
Files	pyconfig.h config.c Python-3.2.3.tar.bz2: test project iOS-build272.sh: Xcode 4.3.2, u'll need patch from http://randomsplat.com/wp-content/uploads/2011/10/Python-2.7.2-xcompile.patch iOS-build272.sh

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/ronaldoussoren'
closed_at = <Date 2012-05-22.05:43:04.597>
created_at = <Date 2012-05-21.05:20:29.961>
labels = ['OS-mac', 'interpreter-core', 'type-crash']
title = '2.x,3.x iOS static build: Fatal Python error: exceptions bootstrapping error.'
updated_at = <Date 2012-05-22.15:03:00.112>
user = None

bugs.python.org fields:

activity = <Date 2012-05-22.15:03:00.112>
actor = 'ronaldoussoren'
assignee = 'ronaldoussoren'
closed = True
closed_date = <Date 2012-05-22.05:43:04.597>
closer = 'amaury.forgeotdarc'
components = ['Interpreter Core', 'macOS']
creation = <Date 2012-05-21.05:20:29.961>
creator = '\xe3\x83\x89\xe3\x83\x9f\xe3\x83\x88\xe3\x83\xaa.\xe3\x82\xb9\xe3\x83\x86\xe3\x83\x91\xe3\x83\x8c\xe3\x82\xb7\xe3\x82\xad\xe3\x83\xb3'
dependencies = []
files = ['25656', '25657', '25658', '25670', '25672']
hgrepos = []
issue_num = 14866
keywords = []
message_count = 10.0
messages = ['161244', '161245', '161259', '161270', '161323', '161327', '161328', '161330', '161334', '161361']
nosy_count = 3.0
nosy_names = ['ronaldoussoren', 'amaury.forgeotdarc', '\xe3\x83\x89\xe3\x83\x9f\xe3\x83\x88\xe3\x83\xaa.\xe3\x82\xb9\xe3\x83\x86\xe3\x83\x91\xe3\x83\x8c\xe3\x82\xb7\xe3\x82\xad\xe3\x83\xb3']
pr_nums = []
priority = 'normal'
resolution = 'works for me'
stage = None
status = 'closed'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue14866'
versions = ['Python 2.7', 'Python 3.2']

[ghost]

I trying to make minimal part of Python to work as part (static library) of my iOS application for internal scripting. I used configure under Mac OS X(10.7) and it was successful. Then I got compilable and linkable XCode project very fast.
The problem is, when I trying to use Python by 
Py_NoSiteFlag=1;
Py_Initialize();
it fails with error "Fatal Python error: exceptions bootstrapping error." inside _PyExc_Init().
I tried to debug it, but unfortunately I cant understand why it fails. May be bacause I noob in Python source, but anyway, I need to port it. Tried 2.7.3, or latest 3.x, it was the same result as above. Any solution or hint will be very helpful.

Best Regards

[ghost]

Call stack:
#0 0x300cba1c in __pthread_kill ()
#1 0x362e43ba in pthread_kill ()
#2 0x362dcbfe in abort ()
#3 0x00127d96 in Py_FatalError at /Users/mac_user/Downloads/Python-3.2.3/IOS/pythoncore/../../Python/pythonrun.c:2169
#4 0x00155328 in _PyExc_Init at /Users/mac_user/Downloads/Python-3.2.3/IOS/pythoncore/../../Objects/exceptions.c:2042
#5 0x00127ad4 in Py_InitializeEx at /Users/mac_user/Downloads/Python-3.2.3/IOS/pythoncore/../../Python/pythonrun.c:272
#6 0x0012846a in Py_Initialize at /Users/mac_user/Downloads/Python-3.2.3/IOS/pythoncore/../../Python/pythonrun.c:332
#7 0x000d6242 in testpython at /Users/mac_user/Downloads/Python-3.2.3/IOS/test/test/testmac.c:15
#8 0x000d618e in -[ViewController viewDidLoad] at /Users/mac_user/Downloads/Python-3.2.3/IOS/test/test/ViewController.m:23
#9 0x3283ff0e in -[UIViewController view] ()
#10 0x3283e2b4 in -[UIWindow addRootViewControllerViewIfPossible] ()
#11 0x3283a332 in -[UIWindow _setHidden:forced:] ()
#12 0x3283e28e in -[UIWindow _orderFrontWithoutMakingKey] ()
#13 0x3284cc60 in -[UIWindow makeKeyAndVisible] ()
#14 0x000d5ffe in -[AppDelegate application:didFinishLaunchingWithOptions:] at /Users/mac_user/Downloads/Python-3.2.3/IOS/test/test/AppDelegate.m:35
#15 0x3283e820 in -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] ()
#16 0x32838b64 in -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] ()
#17 0x3280d7d6 in -[UIApplication handleEvent:withNewEvent:] ()
#18 0x3280d214 in -[UIApplication sendEvent:] ()
#19 0x3280cc52 in _UIApplicationHandleEvent ()
#20 0x322b7e76 in PurpleEventCallback ()
#21 0x3113ba96 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ ()
#22 0x3113d83e in __CFRunLoopDoSource1 ()

[ghost]

I tried look as deep as I can. The result from 3.2.3 port: it fails in Python/getargs.c:convertsimple():line 709, error "signed integer is less than minimum". It parses some parameters, and we have an error on last, 5th parameter. I really have no idea what happens here and why, knowing that same code works just fine under Windows.

[amauryfa]

Most of the time, embedding python in this way requires precise control over PYTHONPATH and PYTHONHOME.  Did you try to modify them?
Something like this worked for me:
  putenv("PYTHONPATH=/path/to/python-3.2.3/Lib");
  Py_SetPythonHome(L"/path/to/python-3.2.3");
I don't know whether both are needed.

[ghost]

thank You for answer. my problem was finally solved by using build script from https://github.com/cobbal/python-for-iphone and patch from http://randomsplat.com/id5-cross-compiling-python-for-embedded-linux.html

[ronaldoussoren]

The build script you mentioned seems to be for python 2.6, did you have to change anything beyond the version numbers to get it to build python 3.2 as well?

[ghost]

actually I changed all, that was needed to build Python static library for iOS device(BTW it doesn't work for simulator, I got configure errors, I can't(or have no time if u want) to resolve), but not much changes.
Want to see working script? OK, attached.
Tested on 2.6.5, and 2.7.2(2.7.x is must have for my application, so sont tested with 3.x)

[ghost]

I embedded 2.7.2 static in iOS test app, and, at least "print "something"" is worked.
Now I *sigh* need to make it compile and work on iPhone Simulator.
I'll try hard, and upload working script, if I'll can fix this mess.

[ghost]

fixed it for build BIG FAT binary. attached.

[ronaldoussoren]

Thanks for posting a working script. I was mostly interested in this because I'll likely need this functionality myself in the near future ;-)