Qt Creator needs a compiler set up to build. Configure a compiler in the kit options

Question

I Have Installed Qt Creator5 with latest binaries. but when i am running any program it is giving me this error.

:-1: error: Qt Creator needs a compiler set

Answer 1

user2304430 has it right, I struggled also figure it out. Above the green Run/Debug buttons in the bottom left, there's a computer icon with a pop-out menu. In there, you have to select your kit.

I went in circles for half an hour checking that my kits were set up right in options. But you actually have to select the kit in the Computer Icon -> pop-out menu in the bottom left before it does anything.

Amazingly, the first many Google pages for the error don't show this, you'd think almost all new users run into this.