Libqtcore so 4 linux install

How To Install libqtcore4 on Ubuntu 18.04

In this tutorial we learn how to install libqtcore4 on Ubuntu 18.04.

What is libqtcore4

Qt is a cross-platform C++ application framework. Qt’s primary feature is its rich set of widgets that provide standard GUI functionality.

The QtCore module contains core non-GUI functionality.

There are three methods to install libqtcore4 on Ubuntu 18.04. We can use apt-get , apt and aptitude . In the following sections we will describe each method. You can choose one of them.

Install libqtcore4 Using apt-get

Update apt database with apt-get using the following command.

After updating apt database, We can install libqtcore4 using apt-get by running the following command:

Install libqtcore4 Using apt

Update apt database with apt using the following command.

After updating apt database, We can install libqtcore4 using apt by running the following command:

Install libqtcore4 Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

After updating apt database, We can install libqtcore4 using aptitude by running the following command:

How To Uninstall libqtcore4 on Ubuntu 18.04

To uninstall only the libqtcore4 package we can use the following command:

Uninstall libqtcore4 And Its Dependencies

To uninstall libqtcore4 and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:

Remove libqtcore4 Configurations and Data

To remove libqtcore4 configuration and data from Ubuntu 18.04 we can use the following command:

Remove libqtcore4 configuration, data, and all of its dependencies

We can use the following command to remove libqtcore4 configurations, data and all of its dependencies, we can use the following command:

References

Summary

In this tutorial we learn how to install libqtcore4 package on Ubuntu 18.04 using different package management tools: apt , apt-get and aptitude .

Источник

libqtcore4 on Ubuntu 18.04 LTS (Bionic Beaver)

This guide covers the steps necessary to install libqtcore4 package:

2. Uninstall / Remove libqtcore4 package

Please follow the guidance below to uninstall libqtcore4 package:

3. Details of libqtcore4 package

Package: libqtcore4
Architecture: amd64
Version: 4:4.8.7+dfsg-7ubuntu1
Multi-Arch: same
Priority: optional
Section: universe/libs
Source: qt4-x11
Origin: Ubuntu
Maintainer: Ubuntu Developers
Original-Maintainer: Debian/Kubuntu Qt/KDE Maintainers
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 4965
Depends: qtcore4-l10n, libc6 (>= 2.15), libgcc1 (>= 1:3.0), libglib2.0-0 (>= 2.22.0), libstdc++6 (>= 5.2), zlib1g (>= 1:1.1.4)
Suggests: libicu55, libthai0
Filename: pool/universe/q/qt4-x11/libqtcore4_4.8.7+dfsg-7ubuntu1_amd64.deb
Size: 1552154
MD5sum: 7cbeeb96c37c1437ba903c5192ea87b4
SHA1: 73a65dc2692b89ee0d6df830a7fbf249da95be36
SHA256: 04dbf64c8b6f9cade0a4e271fb07bf5b20f60937b9dc57a025840042f7e005eb
Homepage: http://qt-project.org/
Description: Qt 4 core module
Description-md5: 7cee1ea8aba376d920c9f7e8e7021f9c
Task: kubuntu-desktop, kubuntu-full, lubuntu-qt-desktop, ubuntustudio-publishing, ubuntustudio-audio, ubuntukylin-desktop, ubuntu-mate-core, ubuntu-mate-desktop
Supported: 3y

4. References on Ubuntu 18.04 LTS (Bionic Beaver)

libqt5xdg-dev (3.1.0-5build2)

libqt5xdgiconloader3 (3.1.0-5build2)

libqt5xml5 (5.9.5+dfsg-0ubuntu2.6)

libqt5xmlpatterns5-dev (5.9.5-0ubuntu1)

libqtassistantclient4 (4.6.3-7build1)

libqtav1 (1.12.0+ds-4build3)

libqtbamf-dev (0.2.4-0ubuntu2)

libqtcore4-perl (4:4.14.1-0ubuntu11)

libqtcurve-utils2 (1.8.18+git20160320-3d8622c-5build4)

libqtdbus4 (4:4.8.7+dfsg-7ubuntu1)

libqtdbusmock1 (0.7+17.04.20170316.1-0ubuntu1)

libqtdbustest1 (0.2+17.04.20170106-0ubuntu1)

libqtdbustest1-dev (0.2+17.04.20170106-0ubuntu1)

libqtdee2 (0.2.4-0ubuntu1)

libqtermwidget5-0-dev (0.8.0-5)

libqtexengine1 (0.3-3)

5. The same packages on other Linux Distributions

libqtcore4 (4:4.8.7+dfsg-5ubuntu2) Ubuntu 16.04 LTS (Xenial Xerus)

libqtcore4 (4:4.8.7+dfsg-18+deb10u1) Debian 10 (Buster)

Источник

How to Install Qt4 Libraries in Ubuntu 20.04 [Ubuntu 22.04 Updated]

The Qt4 framework has been removed from Ubuntu 20.04 main repository. It is however still required for some obsolete applications.

Though it is not recommended, you can still get Qt4 libraries (e.g., libqt4-declarative , qt4-dev-tools , qt4-qmake , libqtwebkit4 , and more) as software dependencies or for building an application via this third-party PPA.

NOTE: Qt4 has reached end of life! You may run into security issues with the library. USE IT AT YOUR OWN RISK! And for Ubuntu 22.04 LTS, please scroll down for option 2.

Option 1: Install Qt4 in Ubuntu 20.04

1.) Open terminal either by pressing Ctrl+Alt+T on keyboard or by searching for ‘terminal’ from your system application launcher. When terminal opens, run command:

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

Type user password (no asterisk feedback) when it prompts and hit enter.

The PPA built Qt4 package as dependency libraries since Unetbootin was based on Qt4.

sudo add-apt-repository ppa:gezakovacs/ppa

2.) After adding the PPA, it should automatically refresh the system package cache. On some Ubuntu derivatives, you may run command to manually update the package cache:

3.) Finally install the software .deb package, and it should automatically install the required Qt4 libraries after running sudo apt -f install.

Or you may install specified Qt4 package by running command:

sudo apt install PACKAGE_NAME

See here for a full list of available Qt4 libraries.

Option 2: Install Qt4 in Ubuntu 22.04

For the new Ubuntu 22.04 LTS, you can get the Qt4 libraries via this unofficial PPA. The packages there belongs to kelebek333.

1. Firstly, press Ctrl+Alt+T on keyboard to open terminal. When it opens, run the command below to add the PPA:

sudo add-apt-repository ppa:ubuntuhandbook1/ppa

Type user password when it asks (no asterisk feedback) and hit Enter to continue.

2. After adding the PPA, install your old app packages should automatically install Qt4 as dependencies.

To install the packages manually, either run command sudo apt install PACKNAME in terminal or use Synaptic package manager:

Uninstall Qt4:

To remove the PPA, run command:

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

Or remove the PPA for Ubuntu 22.04 using command:

sudo add-apt-repository --remove ppa:ubuntuhandbook1/ppa

To remove all Qt4 libraries, run command:

sudo apt remove --autoremove libqt4* libqtcore4 libqtgui4 libqtwebkit4 qt4*

Ji m

I’m a freelance blogger who started using Ubuntu in 2007 and wishes to share my experiences and some useful tips with Ubuntu beginners and lovers. Please comment to remind me outdated tutorial! And, notify me if you find any typo/grammar/language mistakes. English is not my native language. Contact me via [email protected] Buy me a coffee: https://ko-fi.com/ubuntuhandbook1

Источник

Пакет: libqtcore4 (4:4.8.7+dfsg-18+deb10u1)

базовый модуль библиотеки Qt 4 (без графических элементов)

Qt – кросс-платформенная инфраструктура для написания приложений с пользовательским интерфейсом на C++. Главной особенностью Qt является богатый набор графических элементов управления стандартного пользовательского интерфейса.

Пакет включает в себя ядро Qt, не связанное с созданием графического интерфейса.

Другие пакеты, относящиеся к libqtcore4

• зависимости

• рекомендации

• предложения

• enhances

• dep: libc6 (>= 2.15) [amd64, mips64el, s390x] библиотека GNU C: динамически подключаемые библиотеки
  также виртуальный пакет, предоставляемый libc6-udeb dep: libc6 (>= 2.17) [arm64] dep: libc6 (>= 2.22) [ppc64el] dep: libc6 (>= 2.28) [armel, armhf, i386, mips, mipsel]
• dep: libgcc1 (>= 1:3.0) [amd64, arm64, mips64el, ppc64el, s390x] вспомогательная библиотека GCC dep: libgcc1 (>= 1:3.5) [armel, armhf] dep: libgcc1 (>= 1:4.2) [i386, mips, mipsel]
• dep: libglib2.0-0 (>= 2.22.0) библиотека С-функций
• dep: libstdc++6 (>= 5.2) стандартная библиотека GNU C++ версии 3
• dep: qtcore4-l10n Qt 4 core module translations
• dep: zlib1g (>= 1:1.1.4) библиотека сжатия

• sug: libicu57 Пакет недоступен
• sug: libthai0 библиотека для поддержки тайского языка

Загрузка libqtcore4

Загрузить для всех доступных архитектур

Архитектура	Размер пакета	В установленном виде	Файлы
amd64	1 601,1 Кб	5 132,0 Кб	[список файлов]
arm64	1 464,8 Кб	4 967,0 Кб	[список файлов]
armel	1 370,8 Кб	4 407,0 Кб	[список файлов]
armhf	1 366,7 Кб	3 547,0 Кб	[список файлов]
i386	1 708,0 Кб	5 221,0 Кб	[список файлов]
mips	1 450,1 Кб	5 860,0 Кб	[список файлов]
mips64el	1 499,6 Кб	6 412,0 Кб	[список файлов]
mipsel	1 495,0 Кб	5 860,0 Кб	[список файлов]
ppc64el	1 611,2 Кб	6 251,0 Кб	[список файлов]
s390x	1 460,3 Кб	5 382,0 Кб	[список файлов]

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Источник

qt4 / libqt4-* in Ubuntu 20.04

Ubuntu 20.04 dropped qt4 and all libqt4-* dependencies in its official repos. My knowledge about version conflict and install-breaking actions is limited, so before any unthoughtful action is taken, I would want the community’s take about this. Would it be possible to get qt4 to install on Ubuntu 20.04, and if so, which source would not end up breaking the install? Alternatively, what container method would be the lightest for apps relying on qt4? My usecase for qt4 is solely for some Xilinx ISE components, nothing else, so the lightweight criteria is really important.

3 Answers 3

Adding this PPA repository to your system may solve.

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

sudo apt-get install libqtcore4 

Download required packages from https://packages.ubuntu.com/bionic/ or http://archive.ubuntu.com for the Ubuntu 18.04 LTS but on Ubuntu 20.04 LTS. Then install using sudo apt-get install -f ./.deb

While recommended against you can download an old version of the package and force its installation. This could potentially break your installation, so be prepared to fix package conflicts. From that link:

The reason things can break is because the software packaged for one Debian release is built to be compatible with the rest of the software for that release. For example, installing packages from bullseye on a buster system could also install newer versions of core libraries including libc6. This results in a system that is not testing or stable but a broken mix of the two.

If you still need to install an older package, you can follow the instructions jitendra gave in their answer:

• On the newer Ubuntu release, download the required packages from https://packages.ubuntu.com/bionic/ or http://archive.ubuntu.com but for an older release (like 18.04).
• In the download folder, install the packages using the force flag (-f) like sudo apt-get install -f ./.deb Notice that ./ precedes the downloaded file; this tells apt that you’re installing a local package rather than from the official repositories.

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