I work on a Linux machine, trying to build a project using cmake, which comes out of the original builds. To cover the code, I looked at gcov and followed a simple guide that generates the appropriate files for the helloWorld.cpp sample. The only requirement was to compile with the -fprofile-arcs -ftest-coverage flags and link with the -lgcov flag, which can be done with the -coverage flag in -coverage .
Now here is the hard part. I have the content of CMakeLists.txt wit as shown below:
cmake_minimum_required (VERSION 2.8) project (SomeName) SET(GCC_COVERAGE_COMPILE_FLAGS "-g -O0 -coverage -fprofile-arcs -ftest-coverage") SET(GCC_COVERAGE_LINK_FLAGS "-coverage -lgcov") SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS}" ) SET( CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GCC_COVERAGE_LINK_FLAGS}" ) set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) include_directories(include) set(CATCH_HEADER_PATH ${PROJECT_SOURCE_DIR}/test/catch.hpp) add_executable(runTest ${PROJECT_SOURCE_DIR}/test/test.cpp ${CATCH_HEADER_PATH})
So, I turned on the corresponding compile-time flags, as well as the linker flags, and added them correctly. Another note: the set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) line set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin) , which says that executable files will be generated inside the bin directory.
Now everything works as intended, except that coverage files are not generated properly. I do the following:
mkdir build && cd build cmake .. make -j4 ./bin/runTest
and no other file is created inside the bin folder. However, during an additional check, I found that there is another location build/CMakeFiles/runTest.dir/test , where test.cpp.o is located initially, and after the last step ./bin/runTest two new files are test.cpp.gcda - test.cpp.gcda and test.cpp.gcno .
I already tried to copy test/test.cpp to build/CMakeFiles/runTest.dir/test and run gcov test.cpp , but it did not answer - test.gcno:cannot open notes file
source share