在cmake工程中引入 gtest

た入场券 2023-02-27 13:50 9阅读 0赞

## 第一步在工程文件中加入一个新的文件 CMakeLists.txt.in ##

cmake_minimum_required(VERSION 2.8.2)
    
    project(googletest-download NONE)
    
    include(ExternalProject)
    
    ExternalProject_Add(googletest
            GIT_REPOSITORY    https://github.com/google/googletest.git
            GIT_TAG           master
            SOURCE_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-src"
            BINARY_DIR        "${CMAKE_CURRENT_BINARY_DIR}/googletest-build"
            CONFIGURE_COMMAND ""
            BUILD_COMMAND     ""
            INSTALL_COMMAND   ""
            TEST_COMMAND      ""
            )

### 第二步骤在 CMakeLists.txt 增加下面的内容： ###

make_minimum_required(VERSION 3.14)
    
    project(example)
    
    set(CMAKE_CXX_STANDARD 11)
    
    message("cmake_cmonnad ${CMAKE_COMMAND}")
    message("cmake_genrator ${CMAKE_GENERATOR}")
    ###########
    # gtest
    ###########
    configure_file(CMakeLists.txt.in googletest-download/CMakeLists.txt)
    ## 执行cmake 过程 生成 MakeFile
    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()
    # 执行make的 build过程
    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-src
            ${CMAKE_CURRENT_BINARY_DIR}/googletest-build
            EXCLUDE_FROM_ALL)
    
    # The gtest/gtest_main targets carry header search path
    # dependencies automatically when using CMake 2.8.11 or
    # later. Otherwise we have to add them here ourselves.
    if (CMAKE_VERSION VERSION_LESS 2.8.11)
        include_directories("${gtest_SOURCE_DIR}/include")
    endif()
    
    enable_testing()
    
    # Now simply link against gtest or gtest_main as needed. Eg
    add_executable(example example.cpp)
    target_link_libraries(example gtest_main)
    add_test(NAME example_test COMMAND example)

[参考gtest 官方文档][gtest]

[gtest]: https://chromium.googlesource.com/external/github.com/google/googletest/+/refs/heads/master/googletest/