Hello everyone,
I am using Pyinstaller to freeze a PyQt4 Python3 application, using a
onedir spec file.
I did the freeze in ubuntu 12.04, when trying to run it in Ubuntu 16.04 I
get this error:
ImportError: /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0: undefined
symbol: g_variant_dict_ref
I have been debugging the problem using strace, this library is detected
and included by Pyinstaller but many libraries are being loaded directly
from system library paths instead of being loaded from the frozen directory.
I did check os.environ from inside the frozen program and it is correct,
many libraries are loaded from the correct directory indeed, so I
used LD_DEBUG=all to get all dynamic library loading debug information.
For most libraries it is correct, for ex:
10217: file=libz.so.1 [0]; needed by ./manager [0]
10217: find library=libz.so.1 [0]; searching
10217: search path=/vagrant/bin/manager
(LD_LIBRARY_PATH)
10217: trying file=/vagrant/bin/manager/libz.so.1
10217:
10217: file=libz.so.1 [0]; generating link map
10217: dynamic: 0x00007fa77dfefdf0 base: 0x00007fa77ddda000
size: 0x0000000000216230
10217: entry: 0x00007fa77dddc050 phdr: 0x00007fa77ddda040
phnum: 7
But it seems that when the dynamic library it's loaded as a dependency from
any of the Qt libraries the system tries to load from system libraries
before trying to use LD_LIBRARY_PATH, for ex:
10217: file=libgobject-2.0.so.0 [0]; needed by
/vagrant/bin/manager/libQtGui.so.4 [0]
10217: find library=libgobject-2.0.so.0 [0]; searching
10217: search path= (RPATH from file
/vagrant/bin/manager/PyQt4/QtGui.so)
10217: search path=/usr/lib/x86_64-linux-gnu (system
search path)
10217: trying file=/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
10217:
10217: file=libgobject-2.0.so.0 [0]; generating link map
10217: dynamic: 0x00007fa7750acb80 base: 0x00007fa774e5b000
size: 0x0000000000252ee8
10217: entry: 0x00007fa774e65f00 phdr: 0x00007fa774e5b040
phnum: 7
If I delete the file /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0, you can
see the difference:
10222: file=libgobject-2.0.so.0 [0]; needed by
/vagrant/bin/manager/libQtGui.so.4 [0]
10222: find library=libgobject-2.0.so.0 [0]; searching
10222: search path= (RPATH from file
/vagrant/bin/manager/PyQt4/QtGui.so)
10222: search path=/usr/lib/x86_64-linux-gnu (system
search path)
10222: trying file=/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
10222: search path=/vagrant/bin/manager
(LD_LIBRARY_PATH)
10222: trying file=/vagrant/bin/manager/libgobject-2.0.so.0
10222:
10222: file=libgobject-2.0.so.0 [0]; generating link map
10222: dynamic: 0x00007f15f4cecaa0 base: 0x00007f15f4a9f000
size: 0x000000000024ef40
10222: entry: 0x00007f15f4aaa0b0 phdr: 0x00007f15f4a9f040
phnum: 7
So if the dynamic system library is not compatible with the frozen one I
have problems running the program, that's the case for libgobject for
example.
I am a bit lost here, does some know how to handle this?
Thanks!
Miguel
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