Enabling code coverage on Zephyr SDK

[stefanodellosa]

Hi,

I am performing an activity that requires to enable code coverage on Zephyr toolchain to actually show how much of SDK code (in particular gcc) is being stressed by Zephyr build process.

I did modify the configuration (see attachment) and build completes successfully but unfortunately no coverage files are produced.

Could you please help to verify if my configuration is correct?

Thanks and Regards,
Stefano

x86_64-zephyr-elf.zip

[stephanosio]

GCC provides --enable-coverage option during configure.

See https://gcc.gnu.org/install/configure.html

[stefanodellosa]

Thanks for the info! Issue is how to properly embed such flag in crosstool-ng like configuration.. I did not find good documentation/reference to do so.

Have you experience with that?

[stephanosio]

Thanks for the info! Issue is how to properly embed such flag in crosstool-ng like configuration

You should be able to use CT_CC_GCC_EXTRA_CONFIG_ARRAY:
https://github.com/zephyrproject-rtos/crosstool-ng/blob/b6b22fd4032b2ce3738087987024eae33ee7fc09/config/cc/gcc.in#L69

[stefanodellosa]

It worked!

An important note: I had to modify the go.sh script to avoid the cancelation of source file folders after the build. That was another reason of failure for the collection of .gcno files.

Thanks a lot for your support!