Что за ошибка в CLion?

The CMAKE_CXX_COMPILER:

D:/MinGW/bin/g++.exe

is not a full path to an existing compiler tool.

Tell CMake where to find the compiler by setting either the environment variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path to the compiler, or to the compiler name if it is in the PATH.

Как исправить?