Issue 13493: Import error with embedded python on AIX 6.1 (original) (raw)

Issue13493

Created on 2011-11-28 11:29 by python_hu, last changed 2022-04-11 14:57 by admin. This issue is now closed.

Messages (11)
msg148474 - (view)	Author: python_hu (python_hu)	Date: 2011-11-28 11:29
Using python api embed on AIX 6.1,Modules import error,need help!!!!! I have compile Python2.5.5 on Aix 6.1 using condigure: ./configure --with-gcc="xlc_r -q64" --with-cxx="xlC_r -q64" --disable-ipv6 AR="ar -X64" when i run Python,and import math module,it works well: ibm1:python2.5>python Python 2.5.5 (r255:77872, Nov 28 2011, 13:32:10) [C] on aix6 Type "help", "copyright", "credits" or "license" for more information. >>> import math >>> But when i using in my C++ program,it works erro,the follow is mt code : //{{C++ #include <stdio.h> #include "Python.h" #include <dlfcn.h> int main( int argc, char **argv ) { Py_Main(argc, argv); } //}} When i run this code.it has erro like that: ibm1:pytest>pytest Python 2.5.5 (r255:77872, Nov 28 2011, 13:32:10) [C] on aix6 Type "help", "copyright", "credits" or "license" for more information. >>> import math _PyImport_GetDynLoadFunc142:/usr/local/lib/python2.5/lib-dynload/math.so,flags=2_____ _PyImport_GetDynLoadFunc_erro:/usr/local/lib/python2.5/lib-dynload/math.so Traceback (most recent call last): File "", line 1, in ImportError: 0509-130 Symbol resolution failed /usr/local/lib/python2.5/lib-dynload/math.so because: 0509-136 Symbol PyArg_Parse (number 0) is not exported from dependent module pytest. 0509-136 Symbol PyArg_ParseTuple (number 1) is not exported from dependent module pytest. 0509-136 Symbol Py_BuildValue (number 2) is not exported from dependent module pytest. 0509-136 Symbol PyDict_GetItemString (number 3) is not exported from dependent module pytest. 0509-136 Symbol PyErr_NoMemory (number 4) is not exported from dependent module pytest. 0509-136 Symbol PyErr_Occurred (number 5) is not exported from dependent module pytest. 0509-021 Additional errors occurred but are not reported. 0509-192 Examine .loader section symbols with the 'dump -Tv' command. >>>
msg148476 - (view)	Author: Amaury Forgeot d'Arc (amaury.forgeotdarc) *	Date: 2011-11-28 13:06
It may be related to . Can you try with a newer version of Python? 2.5 is not maintained anymore.
msg148536 - (view)	Author: python_hu (python_hu)	Date: 2011-11-29 02:43
thanks a lot. as your surggest,i try python2.7.2,but when i build it on AIX 6.1, it can not compile success,breaked by xlc_c console. Informations: checking size of double... 8 checking size of long double... 8 checking whether byte ordering is bigendian... yes checking assembler .cfi pseudo-op support... no checking whether .eh_frame section should be read-only... no checking for __attribute__((visibility("hidden")))... no xlc_r: 1501-210 (W) command option t contains an incorrect subargument xlc(1) IBM (2008) xlc(1) NAME xlc, xlc++, xlC, cc, c89, c99, xlCcore, xlc++core and related commands - invoke the IBM XL C/C++ compiler. SYNTAX [
msg148538 - (view)	Author: python_hu (python_hu)	Date: 2011-11-29 02:50
By the way,i have compared the "configure.in" with Python-2.7_shared_AIX.diff in Issue941346,and can not find any modification of building share library on AIX in Python 2.7.2' source code.
msg148543 - (view)	Author: Amaury Forgeot d'Arc (amaury.forgeotdarc) *	Date: 2011-11-29 07:05
Is the man page really displayed during compilation? It's a bit weird that the CC compiler behaves this way. Is this common behavior on AIX? By the way, you are already in the "make" command; the output you show is made during compilation of the "_ctypes" module, by the script Modules/_ctypes/libffi/configure. Can you try and see which part of the script displays the man page?
msg148546 - (view)	Author: python_hu (python_hu)	Date: 2011-11-29 08:02
Sorry,it just a common behave of xlC_r,we can ignore it. So i sucess build libpython2.7.so using --enable-shared: ./configure --enable-shared --with-gcc="xlc_r -q64" --with-cxx="xlC_r -q64" --disable-ipv6 AR="ar -X64" I make install python2.7.2,but when i run python2.7,it crashed. why python2.7 can not load libpython2.7.so? libpython2.7.so has been installed at /usr/local/lib informations: # ls 2to3 idle python2.5-config autoconf ifnames python2.5-config-bak autoheader m4 python2.6 autom4te oraenv python2.6-config autoreconf pydoc python2.7 autoscan python python2.7-config autoupdate python-config smtpd.py coraenv python-config-bak tclsh8.4 dbhome python2.5 wish8.4 # python2.7 exec():509-036 can not load program python2.7 because of 0509-150 can not load sub module libpython2.7.so 0509-022 can not load libpython2.7.so 0509-026 system erro: file or dir do noe exists; #
msg148548 - (view)	Author: Amaury Forgeot d'Arc (amaury.forgeotdarc) *	Date: 2011-11-29 08:29
I'm sorry I don't know much about AIX. How are shared libraries searched? is /usr/local/lib a standard place for them? After a couple of google search I suggest the following command: LIBPATH=/usr/local/lib:/usr/lib python2.7
msg148649 - (view)	Author: python_hu (python_hu)	Date: 2011-11-30 12:40
Thank Amaury,you are right. So python2.7 share library compile finished,and python2.7 works,and then I write a test program,to test libpython2.7.so share library,but it dumped! code: ----------------------- #include <stdio.h>^M #include "Python.h"^M #include <dlfcn.h> ^M ^M int main( int argc, char **argv )^M {^M Py_Initialize(); if(!Py_IsInitialized()) { printf("py initialized fail!"); return -1; } void* handle = dlopen("/usr/local/lib/python2.6/lib-dynload/time.so", 2); if (handle == NULL) { const char *error = dlerror(); if (error == NULL) error = "unknown dlopen() error"; printf("erro=%s\n",error); return NULL; } if(!Py_IsInitialized()) { printf("py initialized fail!"); return -1; } printf("hi,python!\n"); PyRun_SimpleString("from time import time,ctime\nprint 'Today is',ctime(time())\n"); Py_Finalize(); } ---------------------------------------------------- This code can compile sucess,but run core dump: ibm1:mmi>pytest hi,python! Fatal Python error: Interpreter not initialized (version mismatch?) The core dump file: --------------------------------------------------------- IOT/Abort trap in pthread_kill at 0x900000000e23450 ($t1) 0x900000000e23450 (pthread_kill+0xb0) e8410028 ld r2,0x28(r1) (dbx) run hi,python! Fatal Python error: Interpreter not initialized (version mismatch?) IOT/Abort trap in pthread_kill at 0x900000000e23450 ($t1) 0x900000000e23450 (pthread_kill+0xb0) e8410028 ld r2,0x28(r1) (dbx) where pthread_kill(??, ??) at 0x900000000e23450 _p_raise(??) at 0x900000000e22cc8 raise.raise(??) at 0x90000000002b10c abort() at 0x900000000094544 pythonrun.Py_FatalError(msg = "init%.200s"), line 1675 in "pythonrun.c" modsupport.Py_InitModule4_64(name = (nil), methods = 0x09001000a0b467d8, doc = (invalid char ptr (0x2f7573722f6c6f63)), passthrough = 0x616c2f6c69622f70, module_api_version = 0), line 38 in "modsupport.c" inittime(), line 825 in "timemodule.c" importdl._PyImport_LoadDynamicModule(name = (nil), pathname = "", fp = 0x0000000000000004), line 53 in "importdl.c" import.load_module(name = "", fp = 0x0fffffffffffd8d8, buf = "^O\377\377\377\377\377\316p^I", type = 150994944, loader = 0x0000000110016e90), line 1830 in "import.c" import.import_submodule(mod = 0x0900000005d0ebc4, subname = "", fullname = "^I"), line 2592 in "import.c" import.load_next(mod = 0x0000000000000005, altmod = (nil), p_name = 0x0900000005dcba27, buf = "", p_buflen = 0x09001000a0b2f9d0), line 2412 in "import.c" import.import_module_level(name = (nil), globals = 0x000000011008c328, locals = 0x000000011008c328, fromlist = 0x000000011013d608, level = -1), line 2133 in "import.c" import.PyImport_ImportModuleLevel(name = "", globals = (nil), locals = 0x0900000005dcba20, fromlist = 0x09001000a0b2f9d0, level = 268435455), line 2185 in "import.c" bltinmodule.builtin___import__(self = 0x0fffffffffffd970, args = 0x0000000000000060, kwds = 0x0fffffffffffd980), line 48 in "bltinmodule.c" methodobject.PyCFunction_Call(func = 0x0fffffffffffd9f0, arg = 0x09001000a0b467d8, kw = 0x0fffffffffffda00), line 85 in "methodobject.c" abstract.PyObject_Call(func = 0x0900000005cb9ae4, arg = 0x09001000a0b467d8, kw = 0x0fffffffffffda90), line 2492 in "abstract.c" ceval.PyEval_CallObjectWithKeywords(func = 0x0000000000000004, arg = 0x00000001100992d0, kw = 0x000000011008c328), line 3619 in "ceval.c" ceval.PyEval_EvalFrameEx(f = 0x0fffffffffffdda0, throwflag = 0), line 2159 in "ceval.c" ceval.PyEval_EvalCodeEx(co = (nil), globals = 0x000000011000ca50, locals = 0x0fffffffffffdee4, args = 0x000000011019a740, argcount = 1, kws = 0x09001000a0075420, kwcount = -1159983106, defs = 0xbadc0ffee0ddf00d, defcount = 0, closure = (nil)), line 3000 in "ceval.c" ceval.PyEval_EvalCode(co = 0x0900000005d578cc, globals = 0x488842281006e148, locals = (nil)), line 541 in "ceval.c" pythonrun.run_mod(mod = 0x0fffffffffffdff0, filename = "^I\377\377\377\360", globals = 0x0900000000028c20, locals = 0x09001000a0b467d8, flags = 0xbadc0ffee0ddf00d, arena = 0x09001000a0075420), line 1351 in "pythonrun.c" pythonrun.PyRun_StringFlags(str = "\350A", start = -1159983106, globals = 0xbadc0ffee0ddf00d, locals = 0xbadc0ffee0ddf00d, flags = 0xbadc0ffee0ddf00d), line 1314 in "pythonrun.c" pythonrun.PyRun_SimpleStringFlags(command = "sucess!", flags = 0x0000000000000001), line 967 in "pythonrun.c" main.main(argc = 1, argv = 0x0fffffffffffe190), line 42 in "main.cpp" (dbx) --------------------------------------- the line 38 in "modsupport.c": if (!Py_IsInitialized()) Py_FatalError("Interpreter not initialized (version mismatch?)"); it looks like "Py_IsInitialized()" is false,but in my main(),the "Py_IsInitialized()" return true.
msg148651 - (view)	Author: Amaury Forgeot d'Arc (amaury.forgeotdarc) *	Date: 2011-11-30 12:59
> dlopen("/usr/local/lib/python2.6/lib-dynload/time.so", 2); You are trying to open a .so from another Python installation. It won't work: it is certainly linked to another Python VM, which is not initialized.
msg148714 - (view)	Author: python_hu (python_hu)	Date: 2011-12-01 08:37
-> void* handle = dlopen("/usr/local/lib/python2.7/lib-dynload/time.so", 2); this code can work well,but when the code run to : PyRun_SimpleString("from time import time,ctime\nprint 'Today is',ctime(time())\n"); it dumped, i think it make be because of there are two python handle running,one is main thread ,anthother is the time.so.
msg342547 - (view)	Author: STINNER Victor (vstinner) *	Date: 2019-05-15 03:04
No activity since 2011, I close the issue.