I have generated gcno and gcda files required for code coverage.
After importing these files into QNX IDE, it shows code coverage for all system included header files (like <vector>) also whose values are zero%.
Is there any option/flags while build to remove system header files from code coverage data in QNX IDE.
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I learn embedded programming with STM32F401RE in IAR Workbench.
I am confused about header file creation after build. Here below my question:
In the below file structure of IAR Workbench before build only a c file and there is no header file in the user folder
However after build process there are many header file in the user folder file.
My question is what is the purpose of the header file in it.
In addition to that question all headers files must be involved before build process?
Thanks.
Those are all header files that you have included in your main.c file, either directly or indirectly. Most at least are IAR library headers that come with the compiler. They are not created, but instead detected to be in use when you build your project.
For example, if you #include <stdio.h> in your source file, then stdio.h will be on that list. And all files that stdio.h includes will also be on that list. And then all includes from those included files are also on that list.
IAR library header files have typically have a lot of nested includes in them. Most likely you have at least one IAR library #include in your main.c file, or you have preincluded in a library header with your compiler command.
I am trying to generate the coverage for C files (Yocto project).
So, I have added gcov flags "-g -O0 --coverage" in the Makefile.am of most of the available modules.
It generated ".gcno" files during the compilation of each module with coverage flags.
I have generated an image from all these modules and loaded it in the test device and ran functional test cases.
I am able to find the path of the "gcda" files using strings command from the process that is running the test device.
So I have used gdb mode to flush the coverage using the "__gcov_flush" command after attaching the process id to gdb.
This throws an error "No symbol __gcov_flush in current context". Please suggest me what may be the cause for this error.
As per the comments it is not directly possible to just build the Linux Kernel with the Coverage Compiler flags and assume to get meaningful coverage metrics.
The Code Coverage metrics actually require some file systems to be available to write the run-time coverage data(i.e. *.gcda files).
If you want to enable Code Coverage for Linux Kernel here is a documentation on how to go about enabling the support using a GCOV virtual filesystem to collect coverage metrics.
Also, assuming you are cross compiling for a different architecture then probably you will have to use a cross-gcov tool to collect the coverage metrics, after you have captured the *.gcno files after execution.
I want to create custom MIB and custom controller for this mib. I use Net-SNMP and Agent device is Debian based Linux machine that snmpd installed on it.I created template and generated .c and .h files using mib2c. At this point, I don't know what to do with these generated files? I want to handle some (The ones I created in MIB) SNMP request in my Clang application. So basically, if I copy the source that mib2c generated to my C project, will it work? Shouldn't I need to register these handlers to snmpd?
I followed this tutorial, but It focused on writing the code. It didn't mention compiling and executing.
After generating the .c and .h file you need to rebuild the netsnmp code again. To link your new .c and .h file into netsnmp, when you run the ./configure pass it as argument. (./configure --with-mib-modules="Object" where Object is the .c/.h filename). After that make using make command
I am working to build a Code Composer Studio project using cmake, which is new to me. It builds successfully under Linux but I am struggling to get it to work under Windows. The cmake command executes without issue, but make fails during the very first C object at the very first #include with the error code
fatal error: could not open source file "stdbool.h" (no directories in search list)
I'm using the libraries included in CCS's compiler (c6000_7.4.15), and that whole folder is included in the CSS project. I include it in cmake as well. In my .cmake file:
set (CCS_ROOT ${CCS_ROOT_V6_WIN} CACHE PATH "code composer install directory")
set(CGT_COMPILER_ROOT ${CCS_ROOT}/tools/compiler/c6000_7.4.15 CACHE INTERNAL "DSP Compiler Root")`
And in the CMakeLists.txt file:
set (COMPILER_INCLUDE ${CGT_COMPILER_ROOT}/include)
INCLUDE_DIRECTORIES ("${COMPILER_INCLUDE}")
Why can the header files not be opened when they're linked in the project and CMake can find them just fine?
EDIT: The directory structure had been changed underneath me, so I took the opportunity to add all of the external files directly into the project to make it completely platform-independent. That way, since the project is managed by our Git repository, users won't have to install the CSL or any other programs to build the project. This also means that paths to libraries and header files will never change between revisions and environments.
Unfortunately, this has not solved my problem. The project continues to build in Linux while failing to ind the very first included header file. I also notice that, under Windows, it cannot find my own header files unless I provide a relative path, e.g. #include "../Common.h" I can get make to find stdbool.h if I provide an absolute path to the compiler directory, but that exposes a web of additional broken links between files.
As a side note, the project builds successfully within Code Composer Studio, so I am assuming that this isn't an issue with my specific Windows environment nor with the code within the project itself.
This seems to be an issue with gcc.exe. I set an environment variable CC to the path of a different compiler (in my case a TI compiler) within my build script and that fixed the problem.
I compile my code using gcc and gfortran. To generate coverage information, I used to add --coverage to both compiler flags (FFLAGS and CFLAGS), the compiler would generate .gcno files and upon running the program I would get .gcda files containing the coverage information.
After separating source and object directory (src/*.c and out/obj/*.o) the gcda files are not generated any more. At least I suppose it is due to that separation.
Is this fixable?