I do a lot of Linux + macOS + Windows support. Yeah third-party libraries are effectively a lost cause. It's ok if it's limited to cpp files. If it's in headers

I do a lot of Linux + macOS + Windows support. Yeah third-party libraries are effectively a lost cause. It's ok if it's limited to cpp files. If it's in headers it's annoying. We vendor all third-party dependencies but would probably bias towards fixing the warning. It just spirals out of control too fast if you don't. Ancient toolchains for embedded or similar is definitely tough. If you can use modern toolchains then the combination of warnings across GCC + Clang + MSVC is probably a win.