Add invert match for gcov ignore switch.

[ibuclaw]

I'm working with a frontend to a much, much larger project. However both must be built together.

After finishing the build with --coverage this leaves over 900 gcov files that get picked up by the codecov script. However only less than 150 of them are relevant to my project. This results in almost 800 files being scanned, uploaded, then discarded post upload as they don't exist in the repository.

Would it be possible to add the inverse to -g for paths to filter for gcov? Such as -G, which would mean that only files paths that match the given expression get scanned.

This would speed up the collection + upload times from hours to minutes. For instance, see here where the first is 8MB, while the other is over 100MB!
https://codecov.io/gh/ibuclaw/GDC/commit/9225c1b868bbf456d19a5ac27796ec12bedc0348/builds

[stevepeak]

Hey @ibuclaw you can provide custom arguments to the gcov upload command:

codecov-bash/codecov

Lines 91 to 96 in 39a8cb3

	-- gcov --
	-g GLOB Paths to ignore during gcov gathering
	-p dir Project root directory (default: PWD, WORKSPACE, or TRAVIS_BUILD_DIR)
	Also used when preparing gcov
	-x gcovexe gcov executable to run. Defaults to 'gcov'
	-a gcovargs extra arguments to pass to gcov

and

codecov-bash/codecov

Line 654 in 39a8cb3

bash -c "find $proj_root -type f -name '*.gcno' $gcov_ignore -exec $gcov_exe -pb $gcov_arg {} +" || true

bash <(curl -s https://codecov.io/bash) -a "-G..."

Let me know if that works out ;)

[ibuclaw]

Yeah, that's not quite right. -G isn't a gcov option. I was suggesting a potential option for the codecov bash script.

Currently you have:

-g GLOB      Paths to ignore during gcov gathering

Which translates to the following that will be passed to find

gcov_ignore="$gcov_ignore -not -path '$OPTARG'"

However I'd like to know if it's possible to support the opposite to -not -path.

[stevepeak]

Ok. I think I'm understanding this. It would help if you expressed what your command would look like in the example below.

# codecov command
find . -type f -name '*.gcno' -exec gcov -pb {} +

What would yours look like?

[ibuclaw]

Sure, it would look like this.

# codecov command
find .-type f -name '*.gcno' -path '*/gcc/d/*' -exec gcov -pb {} +

[stevepeak]

Ok, cool 👍 that makes. Does that commit above look right?

[ibuclaw]

Hey @stevepeak. Yes that looks good for my use-case, thanks!

[stevepeak]

Cool! This is deployed 👍