C ++ using GCOV / LCOV in CMake project

Question

I work in a C ++ Project with a structure similar to the following:

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

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

• Include coverage flags throughout CMakeLists.txt to generate .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") 

• Run the test by creating the corresponding .gcda files.

  At this point, the gcno and gcda files are in the same directory as the corresponding .o file. I cannot move these files because if I do this, the report generation does not work.

• In the directory where the .gcno and .gcda files are located, I do the following:

   lcov –c –d . –o name.info 

• Create an HTML report using:

   genhtml name.info. 

When I compile my project, I have duplicate .gcno files due to the fact that when compiling the tests they need to recompile their dependencies (comms, utils, ...), because I do not create libraries for these dependencies. I think there is no way to avoid this if I do not use libraries.

However, when I try to create index.html (coverage report) for a global project, it does not work.

I use a shell script that creates the same folder structure of my project and copies each .gcno and .gcda to the corresponding directory. And I execute the lcov and genhtml , however index.html does not include the entire scope of the project.

I would appreciate any help.

Answer 1

try putting --ignore-errors with the genhtml command as follows:

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