Can you give any insight on overcoming errors below when trying to make on Mac?

cc -MD -MP -O2 -Wall -Werror -Wfloat-equal -Wpointer-arith -fPIC -I. -g -DSG -c rdkafka.c
rdkafka.c:1065:29: error: use of GNU old-style field designator extension [-Werror,-Wgnu-designator]
struct consume_ctx ctx = { consume_cb: consume_cb, opaque: opaque };
^~~~~~~~~~~
.consume_cb =
rdkafka.c:1065:53: error: use of GNU old-style field designator extension [-Werror,-Wgnu-designator]
struct consume_ctx ctx = { consume_cb: consume_cb, opaque: opaque };
^~~~~~~
.opaque =
2 errors generated.
make: *** [rdkafka.o] Error 1