Error on execution -version `Qt_5' not found required by

Question

On execution of eiskaltdc++ on ubuntu 15.10 ,I get the following error:

eiskaltdcpp-qt: /usr/lib/x86_64-linux-gnu/libQt5Multimedia.so.5: version `Qt_5\' not          


        

Answer 1

Issue happens because you have Qt installed in /usr/lib/x86_64-linux-gnu from distro which ld will use by default. To avoid such issues you can compile with -rpath or run with LD_LIBRARY_PATH=/path/to/your/Qt/libs/location to help linker find needed Qt version.

Answer 2

Install Qt5.x.0 (what version you need) , find install path and copy all file gcc_64/lib/* into

/usr/lib/x86_64-linux-gnu/*

Answer 3

To update QT to 5.14 on Ubuntu 18.04.5 LTS x86_64:

• sudo add-apt-repository ppa:beineri/opt-qt-5.14.0-bionic
• sudo apt-get update
• sudo apt-get install qt514-meta-minimal -y
• export LD_LIBRARY_PATH=/opt/qt514/lib/

More details: https://launchpad.net/~beineri/+archive/ubuntu/opt-qt-5.14.0-bionic

Answer 4

The easiest way to fix this is installing the QT developer package:

sudo apt-get install qt5-default

This will install the packages you need.