Why is there `No CMAKE_CXX_COMPILER could be found.` and how to solve? I just installed `cmake` but I'm getting compiler not found error. In trying to build < on a new Kubuntu installation, running `cmake ..` from the `tools/build` directory returns the error: CMake Error at CMakeLists.txt:3 (project): 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. What's wrong? I assumed `cmake` would be equipped with its compiler, but maybe it needs to be configured before it can be used???

The "compiler" is a separate package that needs to be installed. One called `g++` can be installed on it's own and is also included within a bundle of packages called "build-essential".

Thus `sudo apt-get install build-essential` solves the problem (and `sudo apt-get install g++` should also work), allowing `cmake ..` to work with no configuration necessary.