Support for out-of-source builds

[lpenz]

The utility assumes that the .c files and the git repository are in the same tree as the .gcno files (-r option). With cmake, it is quite easy (and common) to build utilities in a separate "build" directory. I think a --source-root option would make sense.

[jpfr]

We use coveralls with cmake. Works just fine if the folder with the compiler output is selected. https://github.com/acplt/open62541/blob/master/CMakeLists.txt https://github.com/acplt/open62541/blob/master/.travis.yml

[lpenz]

It works if the build directory is under the source directory, as coveralls searches for both .gcno and .c files recursively in the -r directory. If the build directory has no relation with the source directory, the following happens: -r : find .c, don't find .gcno -r : find .gcno, don't find .c I checked this behaviour, and for now I am using it in travis, but the issue is still valid.

[zbeekman]

huh, so am I correct in saying that if you have:

-project_root
|-src
|-other_stuff
|-build
    |-compiler_1

you won’t run into any issues?

[lpenz]

I'd say that I have to test it, but I think that is correct: it would work if I "-r project_root"

[0xced]

Yes, this is correct, having both src and build directories under a common parent root directory works fine.

[AndreLouisCaron]

I'm also trying to use this with CMake on Travis. The problem I'm getting is that the exclude folders for the coverage reports and the source files is the same. I keep getting these matches for source files on CMake internal files (feature_tests.c, CompilerId*). I can use some specific rules but it seems like this is depending on CMake internals.

Any way we can have exclusion patterns specifically for source file discovery?

[zbeekman]

I've found better functionality and support on codecov.io and have moved there. The bash script works quite well, and is easier to use than coveralls.

[mathstuf]

Would it be easy to just have two arguments, one for the build tree and another for the source tree?