I think you usually get a warning at link-time if you try to statically link GCC and use a function that requires matching libc version at runtime, getaddrinfo

I think you usually get a warning at link-time if you try to statically link GCC and use a function that requires matching libc version at runtime, getaddrinfo was the one I remembered but there are certainly more functions like that: x.c:(.text+0x85): warning: Using 'getaddrinfo' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking