linux compile raspberry pi firmware error

[shun-dgut]

run command sudo make TARGET=Raspi apps ， An error occurred.

In file included from Applications/Bridge/AppBase.c:91:0:
PAL/Raspi/HAPPlatformServiceDiscovery+Init.h:59:10: fatal error: dns_sd.h: No such file or directory
#include <dns_sd.h>
^~~~~~~~~~
compilation terminated.

But it seems to exist

[shun-dgut]