在CMake项目中使用GCOV/LCOV的C ++ [英] C++ using GCOV/LCOV in a CMake project

问题描述

我正在一个C ++项目中，其结构类似于以下内容:

I'm working in a C++ Project with a structure similiar to the following:

---  /src
    |--comms
    |--utils
    |--interfaces
    …
    CMakeList.txt
--- /test
    |---test1/
              |--main.cpp
              |--CMakelists.txt

--CMakeLists.txt

我确实需要控制测试的覆盖范围，为此，我以这种方式使用GCOV和LCOV:

I do need to control the coverage of my tests and for this purpose I use GCOV and LCOV in this way:

1. 在所有CMakeLists.txt中启用覆盖标志，以生成.gcno文件.

1. Enable coverage flags in all CMakeLists.txt to let the generation of .gcno files.

SET(CMAKE_CXX_FLAGS "-g -O0 -Wall -fprofile-arcs -ftest-coverage")
SET(CMAKE_C_FLAGS "-g -O0 -Wall -W -fprofile-arcs -ftest-coverage")
SET(CMAKE_EXE_LINKER_FLAGS "-fprofile-arcs -ftest-coverage")

运行测试，生成相应的.gcda文件.

这时，文件gcno和gcda与相应的.o文件位于同一目录中.我无法移动这些文件，因为如果这样做，报告覆盖率生成将无法正常工作.

At this point, files gcno and gcda are located in the same directory as the corresponding .o file. I cannot move these files, because if I do it the report coverage generation doesn’t work.

从文件.gcno和.gcda所在的目录中执行以下操作:

From the directory in which files .gcno and .gcda are located I do the following:

lcov –c –d . –o name.info      

使用以下方法生成HTML报告:

Generate the HTML report by using:

genhtml  name.info.

编译项目时，由于以下事实，我复制了.gcno文件，因为在编译测试时，它们需要重新编译其依赖项(comms，utils等)，因为我不会为这些依赖项生成库.我认为如果不使用库，就无法避免这种情况.

When I compile my project, I have duplicated .gcno files due to the fact that when tests are compiled they need to recompile their dependencies (comms, utils, …) because I don't generate libraries for theses dependencies. I think there is no way to avoid that if I don't use libraries.

但是，当我尝试为全局项目生成index.html(覆盖率报告)时，它不起作用.

However when I try to generate the index.html (coverage report) for the global project, it doesn't work.

我使用一个Shell脚本创建一个与我的项目相同的文件夹结构，并将每个.gcno和.gcda复制到相应的目录中.而且我执行了lcov和genhtml命令，尽管index.html 不不包括所有项目内容.

I use a Shell script that creates the same folder structure of my project and copy each .gcno and .gcda to the corresponding directory. And I execute the commands lcov and genhtml, nevertheless the index.html does not include all project coverage.

我将不胜感激.

推荐答案

尝试使用genhtml命令放置--ignore-errors:

try to put --ignore-errors with genhtml command like that :

genhtml -o out name.info --ignore-errors source

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