＆＃34;未定义参考＆＃34;调用gcc时出错

Question

$ make
gcc -o 4gExe CC1200.o l4g.o l4g_mib.o l4g_rf_S5Sx24.o l4g_rf_SERIES5_SBS.o l4g_tmr.o l4g_tmr_SERIES5_SBS.o l4g_tmr_TEPCO.o l4G_unit_test.o RegionCode.o mai.o RTOS-linux.o -Wall -I ./include  -I ./common  
RTOS-linux.o: In function `OS_CreateRSema':
RTOS-linux.c:(.text+0x11): undefined reference to `pthread_mutexattr_init'
RTOS-linux.c:(.text+0x25): undefined reference to `pthread_mutexattr_setprotocol'
RTOS-linux.c:(.text+0x39): undefined reference to `pthread_mutexattr_settype'
RTOS-linux.o: In function `OS_SignalCSema':
RTOS-linux.c:(.text+0x99): undefined reference to `sem_post'
RTOS-linux.o: In function `OS_WaitCSema':
RTOS-linux.c:(.text+0xb0): undefined reference to `sem_wait'
RTOS-linux.o: In function `OS_CreateCSema':
RTOS-linux.c:(.text+0xcc): undefined reference to `sem_init'
RTOS-linux.o: In function `ev_waitevents':
RTOS-linux.c:(.text+0x173): undefined reference to `sem_wait'
RTOS-linux.c:(.text+0x209): undefined reference to `sem_timedwait'
RTOS-linux.o: In function `OS_SignalEvent':
RTOS-linux.c:(.text+0x398): undefined reference to `sem_post'
RTOS-linux.o: In function `OS_CreateTimer':
RTOS-linux.c:(.text+0xc39): undefined reference to `timer_create'
RTOS-linux.o: In function `OS_StartTimer':
RTOS-linux.c:(.text+0xcc4): undefined reference to `timer_settime'
RTOS-linux.o: In function `OS_CreateTask':
RTOS-linux.c:(.text+0xf17): undefined reference to `pthread_attr_setstack'
RTOS-linux.c:(.text+0xfae): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
Makefile:19: recipe for target '4gExe' failed
make: *** [4gExe] Error 1
[krishna]$ 

Answer 1

在我看来，您并没有在gcc命令中链接您正在使用的库。

尝试将-lpthread添加到命令的末尾