Linking references to functions

[100%digital]

Hello All,

I'm trying to compile some software and it's failing with the folling error when i execute the "make" command;

[root@localhost rfakeap-0.2]# make
gcc -O -lrt -lpcap rfakeap.c -o rfakeap
/tmp/ccni2NDx.o: In function `main':
rfakeap.c.text+0x12b5): undefined reference to `pcap_open_live'
rfakeap.c.text+0x12fd): undefined reference to `pcap_setnonblock'
rfakeap.c.text+0x130a): undefined reference to `pcap_datalink'
rfakeap.c.text+0x13d7): undefined reference to `pcap_loop'

How do i link these references to my libpcap directory? Many thanks.

[giulix]

Try

yum install libpcap-devel

[100%digital]

many thankx giulix i was able install fine after installing the libpcap develpoment package. so i didn't have the linked functioned because I didn't have the `pcap_open_live', `pcap_setnonblock', `pcap_datalink', `pcap_loop' functions without installing the libpcap-devel????

i'm more confused now then before, I was thinking the command would involve -ln???? can you please explain to me.

thanks again for your help.

[giulix]

Yes, you were missing libpcap headers (/usr/include/pcap-bpf.h, /usr/include/pcap-namedb.h and /usr/include/pcap.h) which contain the functions signature