AIX5.3下编译成功，但连接失败

ishow99

1. xlC_r -O0 -g -q64 -I/home/fjsvc/libs/ACE_wrappers -DAIX   -c -o BaseServer21/Config.o BaseServer21/Config.cpp
2. xlC_r -O0 -g -q64 -I/home/fjsvc/libs/ACE_wrappers -DAIX   -c -o BaseServer21/ScheduleHandler.o BaseServer21/ScheduleHandler.cpp
3. xlC_r -O0 -g -q64 -I/home/fjsvc/libs/ACE_wrappers -DAIX   -c -o BaseServer21/Server21.o BaseServer21/Server21.cpp
4. xlC_r -O0 -g -q64 -I/home/fjsvc/libs/ACE_wrappers -DAIX   -c -o BaseServer21/TaskRecv.o BaseServer21/TaskRecv.cpp
5. xlC_r -O0 -g -q64 -I/home/fjsvc/libs/ACE_wrappers -DAIX   -c -o BaseServer21/TaskSend.o BaseServer21/TaskSend.cpp
6. xlC_r -O0 -g -q64 -I/home/fjsvc/libs/ACE_wrappers -DAIX   -c -o BaseServer21/BaseServer21.o BaseServer21/BaseServer21.cpp
7. xlC_r -O0 -g -q64 -I/home/fjsvc/libs/ACE_wrappers -DAIX ./BaseServer21/Config.o ./BaseServer21/ScheduleHandler.o ./BaseServer21/Server21.o ./BaseServer21/TaskRecv.o ./BaseServer21/TaskSend.o ./BaseServer21/BaseServer21.o  -L/home/fjsvc/libs/ACE_wrappers/ace -lACE  -o bin/BaseServer21
8. "/home/fjsvc/libs/ACE_wrappers/ace/Message_Queue_T.h", line 602.25: 1540-1118 (S) The declaration of "not_empty_cond_" uses the undefined class "ACE_Condition_Thread_Mutex" when the class must be complete.
9. "tempinc/Message_Queue_T.C", line 5.14: 1540-0700 (I) The previous message was produced while processing "class ACE_Message_Queue<ACE_MT_SYNCH>".
10. "/home/fjsvc/libs/ACE_wrappers/ace/Synch_Traits.h", line 79.18: 1540-0700 (I) The previous message was produced while processing "class ACE_MT_SYNCH".
11. "tempinc/Message_Queue_T.C", line 5.14: 1540-0401 (S) The member "ACE_Message_Queue<class ACE_MT_SYNCH>::open(unsigned long, unsigned long, ACE_Notification_Strategy *)" is already declared.
12. "/home/fjsvc/libs/ACE_wrappers/ace/Message_Queue_T.h", line 103.15: 1540-0424 (I) "open" is declared on line 103 of "/home/fjsvc/libs/ACE_wrappers/ace/Message_Queue_T.h".
13. "tempinc/Message_Queue_T.C", line 6.10: 1540-0401 (S) The member "ACE_Message_Queue<class ACE_MT_SYNCH>::ACE_Message_Queue(unsigned long, unsigned long, ACE_Notification_Strategy *)" is already declared.
14. "/home/fjsvc/libs/ACE_wrappers/ace/Message_Queue_T.h", line 100.3: 1540-0424 (I) "ACE_Message_Queue" is declared on line 100 of "/home/fjsvc/libs/ACE_wrappers/ace/Message_Queue_T.h".
15. xlC_r: 1501-240 Previous errors were found when compiling tempinc/Message_Queue_T.C
16. gmake: *** [bin/BaseServer21] Error 1

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这是为什么？