Error while building

[googleisloading]

When I try to build, I get this Error Message:

No CMAKE_CXX_COMPILER could be found.

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.

If somebody knows how to fix this, let me know.
Thanks,
google