gtest.cmake

# SPDX-License-Identifier: Apache-2.0
# Copyright (C) 2019-2021 Intel Corporation

find_package(GTest)

if(NOT GTEST_FOUND)
  # Download and unpack googletest at configure time
  configure_file(gtest-down.cmake.in 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()

  # Prevent overriding the parent project's compiler/linker
  # settings on Windows
  set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)

  # Add googletest directly to our build. This defines
  # the gtest and gtest_main targets.
  add_subdirectory(${CMAKE_CURRENT_BINARY_DIR}/googletest
                   ${CMAKE_CURRENT_BINARY_DIR}/googletest-build
                   EXCLUDE_FROM_ALL)

  # Add target
  add_library(GTest::GTest ALIAS gmock_main)
endif()