Undefined Symbol --res-maybe-init Version Glibc-private ✓

undefined symbol: __res_maybe_init@GLIBC_PRIVATE This is not a real-world fix — it’s a reproduction of the error. The actual fix for such an error (if encountered in real code) is to avoid relying on glibc private symbols and link against the correct public resolver API (e.g., res_ninit , __res_init with appropriate feature test macros).

The error undefined symbol --res-maybe-init version glibc-private typically indicates a or a linking issue with a custom or mismatched glibc. This symbol is not public ; it’s a private glibc resolver symbol used internally for thread-safe resolver initialization. undefined symbol --res-maybe-init version glibc-private

But for a , use a direct linker undefined reference : undefined symbol --res-maybe-init version glibc-private

int main() { __res_maybe_init(); // now expects GLIBC_PRIVATE version return 0; } undefined symbol --res-maybe-init version glibc-private