This warning is now permanently shown when building without iconv. While understanding the drawbacks, I'd argue that there may be cases/platforms where building against iconv isn't practical or isn't necessary. E.g. on Windows, building iconv is a challenge and even when done, it's a large dependency that needs to be shipped around. In cases where minizip2 is used in a controlled environment with known, or pure-ASCII filenames, it can work well without codepage conversion.

It'd be nice to have a way to avoid this warning and silently fall back to the transparent strncpy() method.