macro(include_googletest)
  configure_file(
    "cmake/googletest-download.cmake"
    googletest-download/CMakeLists.txt
  )

  execute_process(
    COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
    RESULT_VARIABLE result
    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
  
  if(result)
    message(FATAL_ERROR "CMake step for googletest failed: ${result}")
  endif()
  
  execute_process(
    COMMAND ${CMAKE_COMMAND} --build .
    RESULT_VARIABLE result
    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/googletest-download )
  
  if(result)
    message(FATAL_ERROR "Build step for googletest failed: ${result}")
  endif()
  
  set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)

  add_subdirectory(
    ${CMAKE_CURRENT_BINARY_DIR}/googletest-src
    ${CMAKE_CURRENT_BINARY_DIR}/googletest-build
    EXCLUDE_FROM_ALL
  )
endmacro()