On Tue, Jul 30, 2013 at 8:28 PM, Christian Heimes
Am 29.07.2013 21:48, schrieb Antoine Pitrou:
Ideally, we should run coverage runs on different systems (Unices, Windows...) and merge the results together, so that we know which paths are really uncovered.
I don't that is easily possible. The coverage report depends on GCC and its gcov extension -- so much for Windows. I also don't know if gcov supports cross-profiling on varying platforms and operating systems.
By the way gcov understands preprocessor output. It doesn't report lines as uncovered when the lines or functions are #ifdef-ed out.
In case are curious to try and make this work using clang, I found the flags to use at http://clang-developers.42468.n3.nabble.com/Code-coverage-on-clang-td4033066... and how to make it work with lcov. I also discovered clang itself uses https://github.com/ddunbar/zcov instead of lcov. This is all untested, but I didn't want to forget the links and in case someone has clang installed with compiler-rt and wants to see how it works.