https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36412
--- Comment #2 from Peter Klotz <peter.klotz99 at gmail dot com> --- Hello Martin It's great that you came up with a solution! Meanwhile I removed "-l" from the command line to avoid the error and use an additional script to rename files as soon as they are generated by gcov. This way file name collisions leading to overwritten files are prevented. Once your solution is present in a binary distribution I'm happy to remove all these workarounds. Regards, Peter.