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Old 06-22-2004, 04:58 PM   #1
LQ Newbie
Registered: Jun 2004
Posts: 23

Rep: Reputation: 15
Lightbulb Can't Access Libpcap Library with Knoppix


I am so new to linux that every step I take gives me so much trouble. Hopefully I can find good solution here...

The problem should be simple for experts I guess:

I use Knoppix 3.4 to compile libpcap 0.8.3. Suppose I get a libpcap library, which will be used by another program, named as "weplab".

./configure and make goes well except Knoppix doesn't allow to write on /usr folder (read-only system). So I let the files go to /tmp by using

./configure --prefix=/usr && make && make install

I checked /tmp and /tmp/lib/, libpcap.a, pcap.h and other files are there. But when I configure weplab, it doesn't recognize the path. Then I copied everything into weplab folder. Still, it gives error like:

undefined reference pcap_close
undefined reference pcap_......

Sorry for my lengthy description. My question is how can I let the weplab program to recognize the library? ( I suppose libpcap.a is the library and has everything I need). I checked one of the files that uses the reference, it includes "pcap.h" in the header and directly call the function. I don't know how to modify it.

Please anybody help me, I really need to get this down as soon as possible.

Many many thanks!
Old 06-22-2004, 05:16 PM   #2
LQ Newbie
Registered: Jun 2004
Posts: 23

Original Poster
Rep: Reputation: 15
Do I need to compile some other libpcap library?
Old 06-23-2004, 08:39 AM   #3
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Registered: Aug 2001
Location: Fargo, ND
Distribution: SuSE AMD64
Posts: 15,733

Rep: Reputation: 671Reputation: 671Reputation: 671Reputation: 671Reputation: 671Reputation: 671
You need to su to root before the 'make install' step.


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