How to add Qt5 to Qt Creator?

Yes, but not the version of Qt Creator in the archives. Qt 5.0 is compatible only with Qt Creator 2.6.1+. Thankfully, installing Qt Creator 2.6.1 is relatively easy:

1. Remove the existing version of Qt Creator you have installed:

   sudo apt-get autoremove qtcreator
   

2. Download the appropriate installer from this page:

   • 32-bit Linux Installer

   • 64-bit Linux Installer

3. cd into the directory that contains the installer you downloaded and run:

   chmod 755 qt-creator-linux-*-opensource-2.6.1.bin
   

4. Launch the installer:

   sudo ./qt-creator-linux-*-opensource-2.6.1.bin
   

5. Complete the installer, leaving all settings at their defaults.

If all goes well, you should end up with an icon in your desktop environment's dash or equivalent. You should then be able to use Qt 5.0 with Qt Creator.