View source for Qt Wiki:Install Qt 5 on Ubuntu

[[Category:HowTo]]
[[Category:Tutorial]]
[[Category:QtCreator]]


'''English''' [[Install_Qt_5_on_Ubuntu_Bulgarian|Български]]

= Install Qt 5 on Ubuntu =

== Introduction ==

This is a tutorial for installation of Qt 5.0.2 to Ubuntu 12.10. It may be used also for newer versions of Qt and Ubuntu. A difference for OpenGL has been found and added as a note below.

== Installation Guide ==

* '''Download'''

Visit Qt downloads page an "download a 32-bit or 64-bit Linux installation":http://qt.io/download depending your version of Ubuntu. The installation file can be also downloaded through the command line using wget.

''Example:''
<code>
wget http://download.qt.io/official_releases/qt/5.0/5.0.2/qt-linux-opensource-5.0.2-x86-offline.run
</code>

* '''Install'''

Adjust permission, run the installer and follow the instruction to complete the installation.

<code>
chmod +x qt-linux-opensource-5.0.2-x86-offline.run
./qt-linux-opensource-5.0.2-x86-offline.run
</code>

* '''Install g+''*

Open a terminal and execute the following command to install g''+:
<code>
sudo apt-get install build-essential
</code>

''' '''Configure a compiler'''

Launch '''Qt Creator'''. Go to '''Tools > Options'''. Click '''Build &amp; Run''' and select tab '''Kit'''. Configure a compiler if it is not automatically detected.

* '''Install OpenGL libraries'''

Execute the following command to install OpenGL libraries:
<code>
sudo apt-get install mesa-common-dev
</code>

Note: Just installing the above-mentioned mesa-common-dev kit is not sufficient for more recent Ubuntu versions. Based on this "comment in the forum":http://forum.qt.io/viewthread/23855/#110514 an additional package needs installation. Execute following command:
<code>
sudo apt-get install libglu1-mesa-dev -y
</code>
Tested with Qt5.3.1 and Ubuntu 14.04 and it solved the problem with missing -lGL.

* '''Set file association with pro files'''

When installing from the on-line source the file association is not done automatically.
It also not show up when you try to associate it with file explorer.
Create a file named “Qt-Creator.desktop” and fill the file with the following.

<code>
[Desktop Entry]
Version=1.0
Encoding=UTF-8
Type=Application
Name=QtCreator
Comment=QtCreator
NoDsiplay=true
Exec=(Install folder of QT)/Tools/QtCreator/bin/qtcreator %f
Icon=(Install folder of QT)/5.4/Src/qtdoc/doc/images/landing/icon_QtCreator_78x78px.png
Name[en_US]=Qt-Creator
</code>

Place this file in home .local/share/applications .

Edit a file named “defaults.list” in the same directory .
Add the following line.

<code>
text/qtcreator=Qt-Creator.desktop;
</code>

open file mimeapps.list and check if the following line is present.

<code>
application/vnd.nokia.qt.qmakeprofile=qtcreator.desktop
</code>

if not add it under [added Associations].

Run the following command.

<code>
sudo update-mime-database /usr/share/mime
</code>

now Qt has been added to the list of file associations.

== Troubleshooting ==

* '''Qt Creator needs a compiler set up to build'''

Follow the instruction from the previous section to configure compiler for Qt Creator.

* '''error: g++: Command not found'''

''Solution:''
<code>
sudo apt-get install build-essential
</code>

* '''error: GL/gl.h: No such file or directory'''

''Solution:''
<code>
sudo apt-get install mesa-common-dev