unix网络编程卷2门代码编译中报错：error: ‘door_arg_t’ undeclared (first use in this function)，环境是centos6

Question

gcc client1.c -lunpipc -lrt -ldoor

client1.c: In function ‘main’:

client1.c:8: error: ‘door_arg_t’ undeclared (first use in this function)

client1.c:8: error: (Each undeclared identifier is reported only once

client1.c:8: error: for each function it appears in.)

client1.c:8: error: expected ‘;’ before ‘arg’

client1.c:17: error: ‘arg’ undeclared (first use in this function)

Answer 1

后面是怎么解决的