逐步使用带有CMake的gcov

时间:2018-06-06 12:27:29

标签: c++ linux cmake code-coverage gcov

我正在尝试使用this guide在我正在处理的项目上运行gcov。

我按照指南上的说明阅读了很多帖子,包括本网站上的detailed guide

但我无法使其发挥作用。

我遵循的步骤是:

  1. 我项目的主要CMakeLists.txt位于名为cmake的文件夹中。在此文件夹中,我创建了另一个名为CMakeModules的文件夹,并将CodeCoverage.cmake文件放入其中。

  2. 我将此代码添加到我的CMakeLists.txt:

    set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/CMakeModules)
    if(CMAKE_COMPILER_IS_GNUCXX)
    include(CodeCoverage)
    APPEND_COVERAGE_COMPILER_FLAGS()
    SETUP_TARGET_FOR_COVERAGE(NAME coverage 
    EXECUTABLE 
    DEPENDENCIES coverage)
    endif()
    
  3. 我使用命令编译:

    cmake -DCMAKE_BUILD_TYPE=DEBUG ../cmake
    # (I'm compiling from a subfolder of the master folder)
    
    make
    
    make coverage
    
  4. 运行make coverage命令时出错:

    [100%] Resetting code coverage counters to zero.
    Processing code coverage counters and generating report.
    
    Errno architecture (x86_64-linux-thread-multi-4.6.4-301.fc24.x86_64) does not match executable architecture (x86_64-linux-thread-multi-4.12.9-300.fc26.x86_64) at /usr/lib64/perl5/Errno.pm line 11.
    
    Compilation failed in require at /usr/share/perl5/vendor_perl/File/Temp.pm line 17.
    
    BEGIN failed--compilation aborted at /usr/share/perl5/vendor_perl/File/Temp.pm line 17.
    
    Compilation failed in require at /usr/bin/lcov line 66.
    
    BEGIN failed--compilation aborted at /usr/bin/lcov line 66.
    
    CMakeFiles/coverage.dir/build.make:57: set di istruzioni per l'obiettivo "CMakeFiles/coverage" non riuscito
    
    make[3]: *** [CMakeFiles/coverage] Error 255
    
    CMakeFiles/Makefile2:178: set di istruzioni per l'obiettivo "CMakeFiles/coverage.dir/all" non riuscito
    
    make[2]: *** [CMakeFiles/coverage.dir/all] Errore 2
    CMakeFiles/Makefile2:185: set di istruzioni per l'obiettivo "CMakeFiles/coverage.dir/rule" non riuscito
    
    make[1]: *** [CMakeFiles/coverage.dir/rule] Errore 2
    
    Makefile:214: set di istruzioni per l'obiettivo "coverage" non riuscito
    make: *** [coverage] Errore 2
    
  5. 我的问题是:

    究竟应该把什么放入EXECUTABLE插槽?启动程序的可执行文件的路径?

    程序的设置可以通过我写的那条线来完成吗?

    我已经尝试过本网站上其他线程的解决方案,但我不能告诉我如何使这项工作成功。

1 个答案:

答案 0 :(得分:1)

EXECUTABLE选项应定义如何在代码上运行某些内容并生成覆盖数据。

例如,它应该是运行所有测试的指令。

如果您使用ctest定义了测试,请尝试以下方法:

SETUP_TARGET_FOR_COVERAGE(NAME coverage 
                          EXECUTABLE ctest)

(或ctest --parallel n如果你有很多测试和多个处理器!) 如果你有一个特定的目标进行一些测试,那么尝试类似:

SETUP_TARGET_FOR_COVERAGE(NAME coverage 
                          EXECUTABLE make target)

希望这有帮助!