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Teso
Asked: 2020-09-11 07:55:49 +0800 CST

Cannot install Qt-4 on Ubuntu 20.04 - Quite Universal Circuit Simulator (QUCS)

  • 772

System: Kubuntu-64-bit 20.04 - AMD 64-bit machine
I`m trying to install Quite Universal Circuit Simulator from source code and get error:

configure: error: Qt >= 4.6.0 is required.
configure: error: ./configure failed for qucs

Try to install Qt-4 get error:

apt-get install qt4-dev-tools libqt4-dev libqt4-core libqt4-gui
E: Unable to locate package qt4-dev-tools
E: Package 'libqt4-dev' has no installation candidate
E: Unable to locate package libqt4-core
E: Unable to locate package libqt4-gui

How do I get this work?

qt qt4

2 Answers

  1. The Qt4 framework has been removed from Ubuntu 20.04 main repository.

    You can still get Qt4 libraries, adding the PPA rock-core/qt4

    Run in a terminal:

    sudo add-apt-repository ppa:rock-core/qt4

sudo apt update

    And install the required Qt4 libraries by running command:

    sudo apt install qt4-dev-tools libqt4-dev libqt4-core libqt4-gui

    or

    sudo apt install qt4-dev-tools libqt4-dev libqtcore4 libqtgui4
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  2. Best Answer

    Although @kyodake answer is correct, there is good news:

    1. Nice developers are working on Qt5 port in the main site;

    2. I have concocted an AppImage version (alas, without manuals and probably not the best configured one, but it works) here: https://rmano.github.io/qucsAppImagesBuild/

    You can just download the AppImage, make it executable with chmod +x, and run it.

    enter image description here

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