I don't understand this discussion. What I said was that for our big projects internally, we keep them warning-free, and -Werror obviously helps tremendously with that. Nobody said you need to ship externally with -Werror, or anything about external libraries the project may be using.
By keeping your own project warning-free in your environment, you are doing a service to everyone.
Sounds like you are doing the right thing (-Werror internally, not externally). So this discussion is probably just based on a miscommunication. Happens pretty often on HN unfortunately.
