Re: 4.0.0b2 -- undefined symbol: _Py_ZeroStruct

Erik Johnson <[email protected]>
Newsgroups gmane.comp.python.wxpython.devel
Message-ID <[email protected]>
I don't believe we built it, no. It should be what came with Ubuntu MATE.

The output of the ldd seems to be okay with libpython3.5:

$ ldd 
/usr/local/lib/python3.5/dist-packages/wx/_core.cpython-35m-arm-linux-gnueabihf.so
        linux-vdso.so.1 =>  (0x7efea000)
        /usr/lib/arm-linux-gnueabihf/libarmmem.so (0x76894000)
        libwx_gtk3u_core-3.0.so.0 => 
/usr/local/lib/python3.5/dist-packages/wx/libwx_gtk3u_core-3.0.so.0 
(0x764b3000)
        libwx_baseu_net-3.0.so.0 => 
/usr/local/lib/python3.5/dist-packages/wx/libwx_baseu_net-3.0.so.0 
(0x76473000)
        libwx_baseu-3.0.so.0 => 
/usr/local/lib/python3.5/dist-packages/wx/libwx_baseu-3.0.so.0 (0x762b2000)
        *libpython3.5m.so.1.0 => 
/usr/lib/arm-linux-gnueabihf/libpython3.5m.so.1.0 (0x75f5c000)*
        libstdc++.so.6 => /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 
(0x75e4e000)
        libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0x75dd5000)
        libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0x75dad000)
        libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0x75cc1000)
        libgtk-3.so.0 => /usr/lib/arm-linux-gnueabihf/libgtk-3.so.0 
(0x75785000)
        libgdk-3.so.0 => /usr/lib/arm-linux-gnueabihf/libgdk-3.so.0 
(0x756ed000)
        libpangocairo-1.0.so.0 => 
/usr/lib/arm-linux-gnueabihf/libpangocairo-1.0.so.0 (0x756d3000)
        libpango-1.0.so.0 => /usr/lib/arm-linux-gnueabihf/libpango-1.0.so.0 
(0x7568e000)
        libcairo.so.2 => /usr/lib/arm-linux-gnueabihf/libcairo.so.2 
(0x755d6000)
        libgdk_pixbuf-2.0.so.0 => 
/usr/lib/arm-linux-gnueabihf/libgdk_pixbuf-2.0.so.0 (0x755ad000)
        libgobject-2.0.so.0 => 
/usr/lib/arm-linux-gnueabihf/libgobject-2.0.so.0 (0x75565000)
        libglib-2.0.so.0 => /lib/arm-linux-gnueabihf/libglib-2.0.so.0 
(0x7548c000)
        libX11.so.6 => /usr/lib/arm-linux-gnueabihf/libX11.so.6 (0x7539b000)
        libXxf86vm.so.1 => /usr/lib/arm-linux-gnueabihf/libXxf86vm.so.1 
(0x75387000)
        libSM.so.6 => /usr/lib/arm-linux-gnueabihf/libSM.so.6 (0x75371000)
        libpng12.so.0 => /lib/arm-linux-gnueabihf/libpng12.so.0 (0x75349000)
        libjpeg.so.8 => /usr/lib/arm-linux-gnueabihf/libjpeg.so.8 
(0x75310000)
        libtiff.so.5 => /usr/lib/arm-linux-gnueabihf/libtiff.so.5 
(0x752ab000)
        libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 
(0x75287000)
        /lib/ld-linux-armhf.so.3 (0x54b90000)
        libz.so.1 => /lib/arm-linux-gnueabihf/libz.so.1 (0x75265000)
        libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0x75252000)
        libexpat.so.1 => /lib/arm-linux-gnueabihf/libexpat.so.1 (0x75229000)
        libutil.so.1 => /lib/arm-linux-gnueabihf/libutil.so.1 (0x75216000)
        libgmodule-2.0.so.0 => 
/usr/lib/arm-linux-gnueabihf/libgmodule-2.0.so.0 (0x75203000)
        libXi.so.6 => /usr/lib/arm-linux-gnueabihf/libXi.so.6 (0x751e9000)
        libXfixes.so.3 => /usr/lib/arm-linux-gnueabihf/libXfixes.so.3 
(0x751d5000)
        libcairo-gobject.so.2 => 
/usr/lib/arm-linux-gnueabihf/libcairo-gobject.so.2 (0x751be000)
        libatk-1.0.so.0 => /usr/lib/arm-linux-gnueabihf/libatk-1.0.so.0 
(0x75197000)
        libatk-bridge-2.0.so.0 => 
/usr/lib/arm-linux-gnueabihf/libatk-bridge-2.0.so.0 (0x75168000)
        libepoxy.so.0 => /usr/lib/arm-linux-gnueabihf/libepoxy.so.0 
(0x750bd000)
        libpangoft2-1.0.so.0 => 
/usr/lib/arm-linux-gnueabihf/libpangoft2-1.0.so.0 (0x7509e000)
        libfontconfig.so.1 => 
/usr/lib/arm-linux-gnueabihf/libfontconfig.so.1 (0x75060000)
        libgio-2.0.so.0 => /usr/lib/arm-linux-gnueabihf/libgio-2.0.so.0 
(0x74f5e000)
        libXinerama.so.1 => /usr/lib/arm-linux-gnueabihf/libXinerama.so.1 
(0x74f54000)
        libXrandr.so.2 => /usr/lib/arm-linux-gnueabihf/libXrandr.so.2 
(0x74f3d000)
        libXcursor.so.1 => /usr/lib/arm-linux-gnueabihf/libXcursor.so.1 
(0x74f2e000)
        libXcomposite.so.1 => 
/usr/lib/arm-linux-gnueabihf/libXcomposite.so.1 (0x74f22000)
        libXdamage.so.1 => /usr/lib/arm-linux-gnueabihf/libXdamage.so.1 
(0x74f10000)
        libxkbcommon.so.0 => /usr/lib/arm-linux-gnueabihf/libxkbcommon.so.0 
(0x74ed1000)
        libwayland-cursor.so.0 => 
/usr/lib/arm-linux-gnueabihf/libwayland-cursor.so.0 (0x74eba000)
        libwayland-egl.so.1 => 
/usr/lib/arm-linux-gnueabihf/libwayland-egl.so.1 (0x74ea8000)
        libwayland-client.so.0 => 
/usr/lib/arm-linux-gnueabihf/libwayland-client.so.0 (0x74e8f000)
        libmirclient.so.9 => /usr/lib/arm-linux-gnueabihf/libmirclient.so.9 
(0x74e16000)
        libXext.so.6 => /usr/lib/arm-linux-gnueabihf/libXext.so.6 
(0x74dfb000)
        librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0x74de5000)
        libfreetype.so.6 => /usr/lib/arm-linux-gnueabihf/libfreetype.so.6 
(0x74d6e000)
        libthai.so.0 => /usr/lib/arm-linux-gnueabihf/libthai.so.0 
(0x74d57000)
        libpixman-1.so.0 => /usr/lib/arm-linux-gnueabihf/libpixman-1.so.0 
(0x74cce000)
        libxcb-shm.so.0 => /usr/lib/arm-linux-gnueabihf/libxcb-shm.so.0 
(0x74cbb000)
        libxcb-render.so.0 => 
/usr/lib/arm-linux-gnueabihf/libxcb-render.so.0 (0x74ca4000)
        libxcb.so.1 => /usr/lib/arm-linux-gnueabihf/libxcb.so.1 (0x74c80000)
        libXrender.so.1 => /usr/lib/arm-linux-gnueabihf/libXrender.so.1 
(0x74c68000)
        libffi.so.6 => /usr/lib/arm-linux-gnueabihf/libffi.so.6 (0x74c52000)
        libpcre.so.3 => /lib/arm-linux-gnueabihf/libpcre.so.3 (0x74bf5000)
        libICE.so.6 => /usr/lib/arm-linux-gnueabihf/libICE.so.6 (0x74bd4000)
        libuuid.so.1 => /lib/arm-linux-gnueabihf/libuuid.so.1 (0x74bc0000)
        liblzma.so.5 => /lib/arm-linux-gnueabihf/liblzma.so.5 (0x74b9f000)
        libjbig.so.0 => /usr/lib/arm-linux-gnueabihf/libjbig.so.0 
(0x74b84000)
        libatspi.so.0 => /usr/lib/arm-linux-gnueabihf/libatspi.so.0 
(0x74b56000)
        libdbus-1.so.3 => /lib/arm-linux-gnueabihf/libdbus-1.so.3 
(0x74b17000)
        libharfbuzz.so.0 => /usr/lib/arm-linux-gnueabihf/libharfbuzz.so.0 
(0x74ac7000)
        libselinux.so.1 => /lib/arm-linux-gnueabihf/libselinux.so.1 
(0x74aa2000)
        libresolv.so.2 => /lib/arm-linux-gnueabihf/libresolv.so.2 
(0x74a82000)
        libmircommon.so.7 => /usr/lib/arm-linux-gnueabihf/libmircommon.so.7 
(0x74a45000)
        libmirprotobuf.so.3 => 
/usr/lib/arm-linux-gnueabihf/libmirprotobuf.so.3 (0x749ea000)
        libcapnp-0.5.3.so => /usr/lib/arm-linux-gnueabihf/libcapnp-0.5.3.so 
(0x7497a000)
        libmircore.so.1 => /usr/lib/arm-linux-gnueabihf/libmircore.so.1 
(0x74964000)
        libboost_system.so.1.58.0 => 
/usr/lib/arm-linux-gnueabihf/libboost_system.so.1.58.0 (0x74951000)
        libprotobuf-lite.so.9 => 
/usr/lib/arm-linux-gnueabihf/libprotobuf-lite.so.9 (0x7491f000)
        libdatrie.so.1 => /usr/lib/arm-linux-gnueabihf/libdatrie.so.1 
(0x7490a000)
        libXau.so.6 => /usr/lib/arm-linux-gnueabihf/libXau.so.6 (0x748ff000)
        libXdmcp.so.6 => /usr/lib/arm-linux-gnueabihf/libXdmcp.so.6 
(0x748eb000)
        libsystemd.so.0 => /lib/arm-linux-gnueabihf/libsystemd.so.0 
(0x74894000)
        libgraphite2.so.3 => /usr/lib/arm-linux-gnueabihf/libgraphite2.so.3 
(0x7486d000)
        libboost_filesystem.so.1.58.0 => 
/usr/lib/arm-linux-gnueabihf/libboost_filesystem.so.1.58.0 (0x7484c000)
        libkj-0.5.3.so => /usr/lib/arm-linux-gnueabihf/libkj-0.5.3.so 
(0x74821000)
        libgcrypt.so.20 => /lib/arm-linux-gnueabihf/libgcrypt.so.20 
(0x7478e000)
        libgpg-error.so.0 => /lib/arm-linux-gnueabihf/libgpg-error.so.0 
(0x74770000)

On Tuesday, November 28, 2017 at 3:47:16 PM UTC-6, Robin Dunn wrote:
>
> Erik Johnson wrote:
>
> I'm trying to update my Python package to (finally) use Python 3+, coming 
> from 2.7. I wasn't the one who set up our environment originally, but by 
> word of mouth I've heard we used the apt-get approach to install wxPython 
> previously.
>
> After not finding wxPython in the apt-get repositories, I figured I'd try 
> the (personally, preferable) approach of using pip. I installed the 
> prerequisites found HERE 
> <https://github.com/wxWidgets/Phoenix/blob/master/README.rst#id8>. I 
> dealt with a RAM limitation (on a Raspberry Pi) by adding a swap. And, 
> after a few hours or so, the installation finished. I didn't think to turn 
> on verbose printing, so I don't have the whole log for it on hand, at least 
> that I'm aware of.
>
> The incantation was:
>
> $ sudo pip3 install --upgrade --find-links 
> https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-16.04 
> wxPython
>
> The --find-links came from the main wxPython website HERE 
> <https://www.wxpython.org/pages/downloads/>. We're running Ubuntu MATE 
> 16.04.
>
> Here is info on the installation:
>
> $ pip3 show wxPython
> Name: wxPython
> Version: 4.0.0b2
> Summary: Cross platform GUI toolkit for Python, "Phoenix" version
> Home-page: http://wxPython.org/
> Author: Robin Dunn
> Author-email: [email protected] <javascript:>
> License: wxWindows Library License (
> https://opensource.org/licenses/wxwindows.php)
> Location: /usr/local/lib/python3.5/dist-packages
> Requires: six
>
> As mentioned, the previous wxPython installation was done using apt-get, 
> so doing a "pip show" doesn't give anything. However, doing a help(wx) 
> after importing tells me the path to it is:
>
>     /usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/__init__.py
>
> However, now when I try to "import wx", I get the following:
>
> Python 3.5.2 (default, Sep 14 2017, 22:51:06)
> [GCC 5.4.0 20160609] on linux
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import wx
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/usr/local/lib/python3.5/dist-packages/wx/__init__.py", line 17, 
> in <module>
>     from wx.core import *
>   File "/usr/local/lib/python3.5/dist-packages/wx/core.py", line 12, in 
> <module>
>     from ._core import *
> ImportError: /usr/local/lib/python3.5/dist-packages/wx/_
> core.cpython-35m-arm-linux-gnueabihf.so: undefined symbol: _Py_ZeroStruct
>
>
>
> Did you build that instance of Python yourself? If so, did you configure 
> it with --enable-shared? If so, is that libpython shared library being 
> loaded at runtime when _core is imported?  You can check the last item by 
> running:
>
>     ldd /usr/local/lib/python3.5/dist-packages/wx/_
> core.cpython-35m-arm-linux-gnueabihf.so
>
> If not, then you can probably fix it by setting LD_LIBRARY_PATH or editing 
> /etc/ld.so.conf
>
>
> -- 
> Robin Dunn
> Software Craftsman 
> http://wxPython.org
>

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