这种错误怎么修改代码呀?
我做的程序是关于ad转换的电压表
root@orangepione:~/test_adc# gcc -o cdata client.c -lwiringPi -lpthread
/usr/bin/ld: /usr/lib/gcc/arm-linux-gnueabihf/9/../../../../lib/libwiringPi.so: undefined reference to `crypt'
/usr/bin/ld: /usr/lib/gcc/arm-linux-gnueabihf/9/../../../../lib/libwiringPi.so: undefined reference to `rint'
/usr/bin/ld: /usr/lib/gcc/arm-linux-gnueabihf/9/../../../../lib/libwiringPi.so: undefined reference to `pow'
/usr/bin/ld: /usr/lib/gcc/arm-linux-gnueabihf/9/../../../../lib/libwiringPi.so: undefined reference to `shm_open'
collect2: error: ld returned 1 exit status