为什么我编译出来会有12warning 呢？
Build target 'Target 1'
compiling etherdev.c...
..\SRC\ETHERDEV.C(237): warning C230: 'uip_tcp_appstate_t': uses undefined struct/union tag 'httpd_state'
compiling exam.c...
..\SRC\EXAM.C(29): warning C230: 'uip_tcp_appstate_t': uses undefined struct/union tag 'httpd_state'
compiling main.c...
..\SRC\MAIN.C(134): warning C230: 'uip_tcp_appstate_t': uses undefined struct/union tag 'httpd_state'
compiling uip.c...
..\SRC\UIP.C(1855): warning C280: 'ip_send_nolen': unreferenced label
..\SRC\UIP.C(1905): warning C230: 'uip_tcp_appstate_t': uses undefined struct/union tag 'httpd_state'
compiling uip_arp.c...
..\SRC\UIP_ARP.C(423): warning C230: 'uip_tcp_appstate_t': uses undefined struct/union tag 'httpd_state'
compiling timer.c...
linking...
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_UIP_SETIPID?UIP
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_UIP_CHKSUM?UIP
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?UIP_UDPCHKSUM?UIP
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_UIP_UNLISTEN?UIP
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?CO?UIP
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?_TIMER_RESTART?TIMER
Program Size: data=34.0 xdata=956 code=9762
creating hex file from "mcu_net"...
"mcu_net" - 0 Error(s), 12 Warning(s). |
学习了。。
