-- a/libmysql/dns_srv.cc
++ b/libmysql/dns_srv.cc
#include <netdb.h>
#include <resolv.h>
/* we don't have anything else but the non-tread-safe variants */
#define res_ninit(X) (void)X
#define res_nclose(X) (void)X
#define res_nsearch(X,D,I,S,B,L) res_search(D,I,S,B,L)
// POSIX version
static bool get_dns_srv(Dns_srv_data &data, const char *dnsname, int &error) {