CODEWITHSUNDEEP
c++linuxqtubuntu
vico
vico

Reputation: 18251

Install Qt on Ubuntu

Need to build simple GUI application. For this reason I decided to install Qt on my Ubuntu 16. I have downloaded open source Qt edition from theirs site. Got error while run:

g@ubuntu:~/Downloads$ ./qt-unified-linux-x86-2.0.5-2-online.run 
./qt-unified-linux-x86-2.0.5-2-online.run: error while loading shared libraries: libX11.so.6: cannot open shared object file: No such file or directory

How to fix that?

Upvotes: 70

Views: 246990

Answers (5)

pedrofernandes
pedrofernandes

Reputation: 16884

Download latest from your Qt account next in terminal

chmod +x qt-unified-linux-x64-4.6.0-online.run 
./qt-unified-linux-x64-4.6.0-online.run

Upvotes: 1

John Rajan
John Rajan

Reputation: 1657

Install Qt

sudo apt-get install build-essential

sudo apt-get install qtcreator

sudo apt-get install qt5-default

Install documentation and examples If Qt Creator is installed thanks to the Ubuntu Sofware Center or thanks to the synaptic package manager, documentation for Qt Creator is not installed. Hitting the F1 key will show you the following message : "No documentation available". This can easily be solved by installing the Qt documentation:

sudo apt-get install qt5-doc

sudo apt-get install qt5-doc-html qtbase5-doc-html

sudo apt-get install qtbase5-examples

Restart Qt Creator to make the documentation available.

Error while loading shared libraries

Problem:

radiusd: error while loading shared libraries: libfreeradius-radius-2.1.10.so: cannot open shared object file: No such file or directory

Reason:

Actually, the libraries have been installed in a place where dynamic linker cannot find it.

Solution:

While this is not a guarantee but using the following command may help you solve the “cannot open shared object file” error:

sudo /sbin/ldconfig -v

http://www.lucidarme.me/how-install-documentation-for-qt-creator/

https://ubuntuforums.org/showthread.php?t=2199929

https://itsfoss.com/error-while-loading-shared-libraries/

ModelSim-Altera error

Upvotes: 132

Botje
Botje

Reputation: 31123

Before Debian 11 / Ubuntu 20.10, the ubuntu package name was qt5-default.

This package was deprecated and now you should install qtbase5-dev, or one of the individual Qt modules if you just want the runtime:

  • libqt5concurrent5
  • libqt5core5a
  • libqt5dbus5
  • libqt5gui5
  • libqt5network5
  • libqt5printsupport5
  • libqt5sql5
  • libqt5test5
  • libqt5widgets5
  • libqt5xml5

The corresponding Qt6 package is qt6-base-dev (note the extra -).

Upvotes: 89

Andrey Semakin
Andrey Semakin

Reputation: 2795

Also take a look at awesome project aqtinstall https://github.com/miurahr/aqtinstall/ (it can install any Qt version on Linux, Mac and Windows machines without any interaction!) and GitHub Action that uses this tool: https://github.com/jurplel/install-qt-action

Upvotes: 3

Aaron
Aaron

Reputation: 168

In Ubuntu 18.04 the QtCreator examples and API docs missing, This is my way to solve this problem, should apply to almost every Ubuntu release.

For QtCreator and Examples and API Docs:

sudo apt install `apt-cache search 5-examples | grep qt | grep example | awk '{print $1 }' | xargs `

sudo apt install `apt-cache search 5-doc | grep "Qt 5 " | awk '{print $1}' | xargs`

sudo apt-get install build-essential qtcreator qt5-default

If something is also missing, then:

sudo apt install `apt-cache search qt | grep 5- | grep ^qt | awk '{print $1}' | xargs `

Hope to be helpful.

Also posted in Ask Ubuntu: https://askubuntu.com/questions/450983/ubuntu-14-04-qtcreator-qt5-examples-missing

Upvotes: 4

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