Install Qt 5.5.1and Qt Creator3.6.0 in Ubuntu 14.04

Install Qt 5.5 in Ubuntu 14.04For 32bit

wget http://download.qt-project.org/official_releases/qt/5.5/5.5.1/qt-opensource-linux-x86-5.5.1.run

chmod +x qt-opensource-linux-x86-5.5.1.run

./qt-opensource-linux-x86-5.5.1.run

For 64bit

wget http://download.qt-project.org/official_releases/qt/5.5/5.5.0/qt-opensource-linux-x64-5.5.1.run 
chmod +x qt-opensource-linux-x64-5.5.1.run

./qt-opensource-linux-x64-5.5.1.run

Install g++Open a terminal and execute the following command to install g+:

sudo apt-get install build-essential

Configure a compilerLaunch Qt Creator. Go to Tools > Options. Click Build & Run and select tab Kit. Configure a compiler if it is not automatically detected.Install OpenGL librariesExecute the following command to install OpenGL libraries:

sudo apt-get install mesa-common-dev

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 an additional package needs installation. Execute following command:

sudo apt-get install libglu1-mesa-dev -y

Tested with Qt5.3.1 and Ubuntu 14.04 and it solved the problem with missing -lGL.Set file association with pro filesWhen 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.

[Desktop Entry]
Version=1.0
Encoding=UTF-8
Type=Application
Name=QtCreator
Comment=QtCreator
NoDsiplay=true
Exec=/opt/Qt5.5.1/Tools/QtCreator/bin/qtcreator %f
Icon=/opt/Qt5.5.1/Examples/Qt-5.5/location/mapviewer/resources/icon.png
Name[en_US]=Qt-Creator

Place this file in /usr/share/applications .Edit a file named “defaults.list” in the same directory .Add the following line.

text/qtcreator=Qt-Creator.desktop;

open file mimeinfo.cache and check if the following line is present.

application/vnd.nokia.qt.qmakeprofile=qtcreator.desktop

if not add itRun the following command.

sudo update-mime-database /usr/share/mime

now Qt has been added to the list of file associations.when you open .pro file, if it cannot fine qtcreator to open it, you can open ti with qtcreator manually at first time. then it will be associtated automatically.

Troubleshooting

Qt Creator needs a compiler set up to buildFollow the instruction from the previous section to configure compiler for Qt Creator.error: g++: Command not foundSolution:

sudo apt-get install build-essential

error: GL/gl.h: No such file or directorySolution:

sudo apt-get install mesa-common-dev

install creator3.6.0

go to link https://www.qt.io/download-open-source/#section-6

download: qt-creator-opensource-linux-x86_64-3.6.0.run

chmod +x qt-creator-opensource-linux-x86_64-3.6.0.run

./qt-creator-opensource-linux-x86_64-3.6.0.run

In the end, we change the associated exec to the qtcreator we've just installed.