Question

I have done the following but I am still getting 0% gcov coverage for my .app. Here is what I am doing:

I am using Xcode 3.2.6, GCC 4.2 and am on Mac OSX 10.6.
I duplicated the Debug config and call it Gcov. In the Gcov config and the app target I set the following build configuration:
- Check "Generate Test Coverage Files"
- Check "Instrument Program Flow"
- Add "-lgcov" to "Other Linker Flags"
I did a Clean All then I did a Build and Run .
Once the build successfully built it launched the app. I did some quick things in the app and exited.
When I go view the .gcda/.gcno I see that they have been generated and in fact every time I launch the app and do additional things in the app I see the .gcda/.gcno files are indeed updating. However, using gcov/gcovr to view the .gcda/.gcno I keep getting 0 coverage.

对我究竟做什么错了的想法? 感谢任何帮助。

Answer 1

Check to see if your gcc is really gcc with gcc --version. On newer Macs, gcc is now linked to llvm-gcc, which evidently doesn t support gcov. If you find that this is the case, use clang/clang++ in lieu of gcc/g++.

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