Qt Designer Hata

Qt Designer hata

:-1: error: Qt Creator needs a compiler set up to build. Configure a compiler in the kit options.

linux
sudo apt-get install g++ 
sudo apt-get install libgl1-mesa-dev libglu1-mesa-dev

windows
Delete this file
C:\Users\AppData\Roaming\QtProject\qtcreator\toolchains.xml
to solve the problem.