ESP32 CSI - "The CMAKE_C_COMPILER xtensa esp32 elf gcc is not a full path and was not found in the PATH." の解決

CMake Error at C:/Users/***/esp/***/esp-idf/tools/cmake/project.cmake:571 (__project):The CMAKE_C_COMPILER:

    xtensa-esp32-elf-gcc

is not a full path and was not found in the PATH.  Perhaps the extension is
missing?

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