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Compilation Error with Python 3.6.1/3.6.3 with Tkinter #75998

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Compilation Error with Python 3.6.1/3.6.3 with Tkinter#75998
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buildThe build process and cross-buildtopic-tkinter

Description

@jpc2350
jpc2350
mannequin
opened on Oct 19, 2017
BPO 31817
Nosy @ned-deily, @jpc2350, @iritkatriel

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 = None
closed_at = <Date 2022-01-30.16:51:17.463>
created_at = <Date 2017-10-19.10:07:54.917>
labels = ['build', 'expert-tkinter']
title = 'Compilation Error with Python 3.6.1/3.6.3 with Tkinter'
updated_at = <Date 2022-01-30.16:51:17.463>
user = 'https://github.com/jpc2350'

bugs.python.org fields:

activity = <Date 2022-01-30.16:51:17.463>
actor = 'iritkatriel'
assignee = 'none'
closed = True
closed_date = <Date 2022-01-30.16:51:17.463>
closer = 'iritkatriel'
components = ['Tkinter']
creation = <Date 2017-10-19.10:07:54.917>
creator = 'jpc2350'
dependencies = []
files = []
hgrepos = []
issue_num = 31817
keywords = []
message_count = 14.0
messages = ['304612', '304675', '304676', '304788', '305431', '305472', '306272', '307118', '314638', '316385', '319861', '370284', '370289', '411150']
nosy_count = 5.0
nosy_names = ['ned.deily', 'jpc2350', 'dplusplus', 'iritkatriel', 'zhang']
pr_nums = []
priority = 'normal'
resolution = 'out of date'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'compile error'
url = 'https://bugs.python.org/issue31817'
versions = ['Python 3.6']

Activity

  1. jpc2350 commented on Oct 19, 2017

    @jpc2350
    jpc2350mannequin
    on Oct 19, 2017
    MannequinAuthor

    Hi Guys,

    I'm trying to build Python 3.6.1 and 3.6.3, with both, .configure / make / make install work correctly as they should, however, trying to import _tkinter doesn't work.

    Going back to the compilation, I get the following error in the make log:

    *** WARNING: renaming "_tkinter" since importing it failed: build/lib.linux-x86_64-3.6/_tkinter.cpython-36m-x86_64-linux-gnu.so: undefined symbol: Tcl_GetCharLength

    Following modules built successfully but were removed because they could not be imported:
    _tkinter

    Any Idea's on how to fix the undefined symbol error? This happens with both Tcl/Tk 8.6.6 and 8.6.7.

    The following is the configure options:
    --prefix=/tools/apps/python/3.6.1 --with-tcltk-includes='-I/tools/apps/Tcl/8.6.7/include -I/tools/apps/Tk/8.6.7/include' --with-tcltk-libs='-L/tools/apps/Tcl/8.6.7/lib -L/tools/apps/Tk/8.6.7/lib' --enable-optimizations --enable-shared

  2. jpc2350
    added
    topic-tkinter
    buildThe build process and cross-build
    on Oct 19, 2017

  3. ned-deily commented on Oct 20, 2017

    @ned-deily
    ned-deily
    on Oct 20, 2017
    Member

    You may need to set LD_LIBRARY_PATH env variable to point to your Tcl and Tk libraries or, better, add an rpath entry to LDFLAGS.

  4. jpc2350 commented on Oct 20, 2017

    @jpc2350
    jpc2350mannequin
    on Oct 20, 2017
    MannequinAuthor

    Hi Ned,

    LD_LIBRARY_PATH has been set with the lib paths for both, like I said the
    module itself builds, I’ll add the module build logs later but the module
    try’s to get loaded before the tests which unfortunately gives the error
    undefined symbol: Tcl_GetCharLength
    On Fri, 20 Oct 2017 at 20:57, Ned Deily <[email protected]> wrote:

    Ned Deily <[email protected]> added the comment:

    You may need to set LD_LIBRARY_PATH env variable to point to your Tcl and
    Tk libraries or, better, add an rpath entry to LDFLAGS.

    ----------
    nosy: +ned.deily

    Python tracker <[email protected]>
    <https://bugs.python.org/issue31817\>

  5. jpc2350 commented on Oct 23, 2017

    @jpc2350
    jpc2350mannequin
    on Oct 23, 2017
    MannequinAuthor

    Hi Ned,

    Please see the make logs for _tkinter below:

    building '_tkinter' extension
    gcc -pthread -fPIC -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -fprofile-generate -DWITH_APPINIT=1 -I./Include -I. -I/usr/include/x86_64-linux-gnu -I/usr/local/include -I/tools/src/Python-3.6.3/Include -I/tools/src/Python-3.6.3 -c /tools/src/Python-3.6.3/Modules/_tkinter.c -o build/temp.linux-x86_64-3.6/tools/src/Python-3.6.3/Modules/_tkinter.o -I/tools/apps/tcl/8.6.7/include -I/tools/apps/tk/8.6.7/include
    gcc -pthread -fPIC -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -fprofile-generate -DWITH_APPINIT=1 -I./Include -I. -I/usr/include/x86_64-linux-gnu -I/usr/local/include -I/tools/src/Python-3.6.3/Include -I/tools/src/Python-3.6.3 -c /tools/src/Python-3.6.3/Modules/tkappinit.c -o build/temp.linux-x86_64-3.6/tools/src/Python-3.6.3/Modules/tkappinit.o -I/tools/apps/tcl/8.6.7/include -I/tools/apps/tk/8.6.7/include
    gcc -pthread -shared -fprofile-generate -fprofile-generate build/temp.linux-x86_64-3.6/tools/src/Python-3.6.3/Modules/_tkinter.o build/temp.linux-x86_64-3.6/tools/src/Python-3.6.3/Modules/tkappinit.o -L. -L/usr/lib/x86_64-linux-gnu -L/usr/local/lib -lpython3.6m -o build/lib.linux-x86_64-3.6/_tkinter.cpython-36m-x86_64-linux-gnu.so -L/tools/apps/tcl/8.6.7/lib -L/tools/apps/tk/8.6.7/lib

  6. jpc2350 commented on Nov 2, 2017

    @jpc2350
    jpc2350mannequin
    on Nov 2, 2017
    MannequinAuthor

    LD_LIBRARY_PATH includes /tools/apps/tk/8.6.7/lib/:/tools/apps/tcl/8.6.7/lib/
    and several other library paths that are required.

    Why would I be getting an undefined symbol error on this module?
    _tkinter.cpython-36m-x86_64-linux-gnu.so: undefined symbol: Tcl_GetCharLength

    I've even tried added g++ as an option, but Python fails to be against this: bpo-23644

    I'm stuck now, and this is causing real problems for some pipelines that I'm trying to get running.

  7. ned-deily commented on Nov 3, 2017

    @ned-deily
    ned-deily
    on Nov 3, 2017
    Member

    Josh, sorry I don't have any further ideas off the top of my head and I likely won't have time for several weeks to try to reproduce this myself. Have you tried renaming the _tkinter extension back, doing a "make install", and seeing whether it imports properly from the installed python?

  8. jpc2350 commented on Nov 15, 2017

    @jpc2350
    jpc2350mannequin
    on Nov 15, 2017
    MannequinAuthor

    Hi Ned,

    Tried that but unfortunately it didn't work. It still produces an error within the make install function which then re-removes the module - it does however create a folder called tkinter.

  9. jpc2350 commented on Nov 28, 2017

    @jpc2350
    jpc2350mannequin
    on Nov 28, 2017
    MannequinAuthor

    Hi Ned,

    I've built a new machine, tried the build again using Tk and Tcl shared libraries, built Python-3.6.3 and it's still not worked.

    The Python/3.6.3-foss-2017b/lib/python3.6/tkinter folder gets created and populated with several files, but when you try and import tkinter in python, it fails to import with:

    >>> import tkinter
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/tools/apps/Python/3.6.3-foss-2017b/lib/python3.6/tkinter/__init__.py", line 36, in <module>
    import _tkinter # If this fails your Python may not be configured for Tk
ModuleNotFoundError: No module named '_tkinter'

    Running __init__.py from the tkinter folder produces this output:

    Traceback (most recent call last):
  File "__init__.py", line 36, in <module>
    import _tkinter # If this fails your Python may not be configured for Tk
ModuleNotFoundError: No module named '_tkinter'

    I'm guessing something is failing to build correctly but it's not being logged.

    Both Tk and Tcl versions 8.6.6 and 8.6.7 are available and working on the system.

  10. StarkBjorn commented on Mar 29, 2018

    @StarkBjorn
    StarkBjornmannequin
    on Mar 29, 2018
    Mannequin

    Python 3.6.4
    tcl8.6.5+dfsg-2
    tk8.6.5-1

    The problem:

    *** WARNING: renaming "_tkinter" since importing it failed: build/lib.linux-x86_64-3.6/_tkinter.cpython-36m-x86_64-linux-gnu.so: undefined symbol: Tcl_GetCharLength

    still remains!

  11. dplusplus commented on May 11, 2018

    @dplusplus
    dplusplusmannequin
    on May 11, 2018
    Mannequin

    I am trying to build Python 3.6.5 from source, with Tcl 8.6.8 and Tk 8.6.8, and I get the same issue (Building on Ubuntu 18.04, tried with GCC 7.3 and 8.1 with same results).
    Run 'readelf -d` on 'build/lib.linux-x86_64-3.6/_tkinter.cpython-36m-x86_64-linux-gnu_failed.so' and I get three NEEDED entries:

    0x0000000000000001 (NEEDED) Shared library: [libpython3.6m.so.1.0]
    0x0000000000000001 (NEEDED) Shared library: [libpthread.so.0]
    0x0000000000000001 (NEEDED) Shared library: [libc.so.6]

    Tcl and Tk libraries are not listed as needed shared libraries, which explains why settings runpaths (which I tried by setting CFLAGS) does not seem to work.
    I'm comparing this to the ELF entries in Ubuntu's Python 3.6.5 tkinter module '/usr/lib/python3.6/lib-dynload/_tkinter.cpython-36m-x86_64-linux-gnu.so', which does have NEEDED entries for tcl8.6.so and tk8.6.so.

  12. dplusplus commented on Jun 18, 2018

    @dplusplus
    dplusplusmannequin
    on Jun 18, 2018
    Mannequin

    Revisited this recently and found a fix. This problem seems to appear only if Tcl and/or Tk is installed in a non-standard folder.

    In the ./configure call, include -ltcl8.6 -ltk8.6 (for Tcl/Tk 8.6.x) in the --with-tcltk-libs specification, so the command looks like ./configure --with-tcltk-libs='-L/path/to/tcl/lib/location -L/path/to/tk/lib/location -ltcl8.6 -ltk8.6'. Since the Tcl and Tk shared libraries are in non-standard locations, set LD_LIBRARY or append '-Wl,-rpath,/path/to/tcl/lib/location -Wl,-rpath,/path/to/tk/lib/location' to --with-tcltk-libs. Run make and the tkinter import failure is no longer there.

    import tkinter runs fine, but an error appears when running the simple hello world script at https://docs.python.org/3.6/library/tkinter.html:

    Traceback (most recent call last):
  File "/opt/tk_sample.py", line 22, in <module>
    root = tk.Tk()
  File "/opt/Python-3.6.5/Lib/tkinter/__init__.py", line 2020, in __init__
    self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
_tkinter.TclError: Can't find a usable tk.tcl in the following directories:
    /opt/tk/lib /opt/tcl/lib/tcl8.6/tk8.6 /opt/tcl/lib/tk8.6 /opt/Python-3.6.5/lib/tk8.6 /opt/Python-3.6.5/lib/tk8.6 /opt/lib/tk8.6 /opt/Python-3.6.5/library

    tk.tcl is in /opt/tk/lib/tk8.6; looking at the directories listed in the error message _tkinter is expecting Tcl and Tk to be installed in the same folder (To be fair, Tk warns about this in its configure script).
    This is fixed by setting the environment variable TK_LIBRARY to the folder where tk.tcl is. I do not consider this a complete solution though, since TK_LIBRARY needs to be set to run anything that uses tkinter.

  13. zhang commented on May 29, 2020

    @zhang
    zhangmannequin
    on May 29, 2020
    Mannequin

    Josh,Did you solve this problem？I met the same error when install python.

    *** WARNING: renaming "_tkinter" since importing it failed: build/lib.linux-x86_64-3.6/_tkinter.cpython-36m-x86_64-linux-gnu.so: undefined symbol: Tcl_GetCharLength

  14. ned-deily commented on May 29, 2020

    @ned-deily
    ned-deily
    on May 29, 2020
    Member

    @Zhang, Did you try the solution given by dplusplus in the previous message (msg319861)?

  15. iritkatriel commented on Jan 21, 2022

    @iritkatriel
    iritkatriel
    on Jan 21, 2022
    Member

    3.6 is no longer maintained. Is this a problem on current versions or can be close this?

  16. iritkatriel
    closed this as completedon Jan 30, 2022
  17. ezio-melotti
    transferred this issue fromon Apr 10, 2022
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