linux编译Polardbx的时候报错了，提示：/usr/bin/c++ is not a full path to an existing compiler tool

CMake Error at CMakeLists.txt:316 (PROJECT):
  The CMAKE_CXX_COMPILER:

    /usr/bin/c++

  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.