unix网络编程编译问题

root@xu-Inspiron-5420:/home/xu/unp/unpv13e/intro# gcc daytimetcpcli.c
/tmp/ccRzNo93.o: In function `main':
daytimetcpcli.c:(.text+0x3b): undefined reference to `err_quit'
daytimetcpcli.c:(.text+0x6d): undefined reference to `err_sys'
daytimetcpcli.c:(.text+0xdb): undefined reference to `err_quit'
daytimetcpcli.c:(.text+0x107): undefined reference to `err_sys'
daytimetcpcli.c:(.text+0x149): undefined reference to `err_sys'
daytimetcpcli.c:(.text+0x18f): undefined reference to `err_sys'

collect2: ld 返回 1

解决办法

产生此问题的原因在于没有找到error.c文件

$ cc daytimetcpcli.c ../lib/error.c -o daytimeclient.exe

编译通过