touch-packages team mailing list archive

[mythsmith <1161485@xxxxxxxxxxxxxxxxxx>]

This bug also affects Ubuntu 14.04. 
python-opencv tries to import libavcodec.so.53, which is not installable and is not listed in python-opencv dependencies.

  File "/usr/lib/python2.7/dist-packages/cv.py", line 1, in <module>
    from cv2.cv import *
ImportError: libavcodec.so.53: cannot open shared object file: No such file or directory

The repositories only list 52 and 54. I tried symlinking the missing
dependencies to newer version, but it does not

ln -s /usr/lib/x86_64-linux-gnu/libavcodec.so.54 /usr/lib/x86_64-linux-gnu/libavcodec.so.53
ln -s /usr/lib/x86_64-linux-gnu/libavformat.so.54 /usr/lib/x86_64-linux-gnu/libavformat.so.53
ln -s /usr/lib/x86_64-linux-gnu/libavutil.so.52 /usr/lib/x86_64-linux-gnu/libavutil.so.51

But then it will fail with: 
  File "/usr/lib/python2.7/dist-packages/cv.py", line 1, in <module>
    from cv2.cv import *
ImportError: /usr/lib/x86_64-linux-gnu/libavutil.so.51: version `LIBAVUTIL_51' not found (required by /usr/lib/libopencv_highgui.so.2.4)

Output of ldd /usr/lib/python2.7/dist-packages/cv2.so | grep "not found":
	libavcodec.so.53 => not found
	libavformat.so.53 => not found
	libavutil.so.51 => not found

This affects 64bit systems,  BUT NOT 32bit systems.

So, it seems that:
1. The 64bit python-opencv package is compiled against libraries which does not exist in 14.04 (but 32bit is OK).
2. libavcodec, libavformat, libavutil and maybe other libraries are not listed as dependencies (in both arch).

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to opencv in Ubuntu.
https://bugs.launchpad.net/bugs/1161485

Title:
  /usr/lib/pyshared/python2.7/cv2.so depends on missing libavcodec52?

Status in “opencv” package in Ubuntu:
  Confirmed

Bug description:
  After installing python-opencv in Ubuntu 12.04 LTS, the python
  statement "import cv2" results in an error:

  ImportError: libavcodec.so.52: cannot open shared object file: No such
  file or directory

  Which is correct since libavcodec.so.52 is not installed nor is it
  possible to install it from the regular respositories since itis be
  replaced by libavcodec.so.53. Checked with another system, which also
  runs 12.04, but a fresh install instead of an upgrade from 10.04 (some
  time ago) and to my astonishment, the same .deb package (downloaded
  straight from
  http://nl.archive.ubuntu.com/ubuntu/pool/universe/o/opencv/python-
  opencv_2.3.1-7_i386.deb and unpacked with dpkg -x) show different
  dependencies:

  gerwin@PC1:/tmp/python-opencv/usr/lib/pyshared/python2.7$ ldd cv2.so | grep avcodec
    libavcodec.so.53 => /usr/lib/i386-linux-gnu/i686/cmov/libavcodec.so.53 (0xb51f7000)

  vs.

  gerwin@PC2:/tmp/python-opencv/usr/lib/pyshared/python2.7$ ldd cv2.so | grep avcodec
    libavcodec.so.52 => not found

  Is there another part in the system that defines the dependencies
  other than the files themselves?

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/opencv/+bug/1161485/+subscriptions