return 0;
}" HAVE_IPV6)
-check_struct_has_member("struct __res_state" _u._ext.nsaddrs resolv.h HAVE_RESOLV_IPV6_NSADDRS)
+check_struct_has_member("struct __res_state" _u._ext.nsaddrs
+ "sys/socket.h;netinet/in.h;resolv.h"
+ HAVE_RES_STATE_U_EXT_NSADDRS)
check_c_source_compiles("
void log_fn(const char *format, ...) __attribute__ ((format (printf, 1, 2)));