# who know setup of libpcap?

**URL:** <https://community.zeek.org/t/who-know-setup-of-libpcap/309>\
**Category:** Zeek\
**Created:** [December 2, 2002, 2:24am UTC](https://community.zeek.org/t/who-know-setup-of-libpcap/309 "2002-12-02T02:24:10Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![zhang\_qingsheng](https://avatars.discourse-cdn.com/v4/letter/z/5f9b8f/32.png) [@zhang\_qingsheng](https://community.zeek.org/u/zhang_qingsheng)\
**Post date:** [December 2, 2002, 2:24am UTC](https://community.zeek.org/t/who-know-setup-of-libpcap/309/1 "2002-12-02T02:24:10Z")

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I met somewhat question about setup of libpcap,I can’t solve it,who can give me detail guidelines about it.

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**Author:** ![Ruoming\_Pang1](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Ruoming\_Pang1](https://community.zeek.org/u/Ruoming_Pang1)\
**Post date:** [December 4, 2002, 6:02am UTC](https://community.zeek.org/t/who-know-setup-of-libpcap/309/2 "2002-12-04T06:02:59Z")

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Hi,

I wonder anyone has experience in building Bro in linux and, especially,  
in resolving the following problem:

nb\_dns.o: In function `nb\_dns\_activity':  
nb\_dns.o(.text+0x678): undefined reference to `\_\_ns\_initparse'  
nb\_dns.o(.text+0x742): undefined reference to `\_ns\_flagdata'  
nb\_dns.o(.text+0x748): undefined reference to `\_ns\_flagdata'  
nb\_dns.o(.text+0x9bc): undefined reference to `\_\_ns\_parserr'  
collect2: ld returned 1 exit status  
make: \*\*\* [bro] Error 1

I am using linux 2.4.18-3 (Redhat 7.3). I nm'ed libresolv.a and did find  
\_\_ns\_initparse in it:

/usr/lib/libresolv.a:ns\_parse.o:00000000 T \_\_ns\_initparse

Thanks a lot,  
Ruoming

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**Author:** ![Olivier\_Grumelard](https://avatars.discourse-cdn.com/v4/letter/o/ee59a6/32.png) [@Olivier\_Grumelard](https://community.zeek.org/u/Olivier_Grumelard)\
**Post date:** [December 4, 2002, 7:36am UTC](https://community.zeek.org/t/who-know-setup-of-libpcap/309/3 "2002-12-04T07:36:47Z")

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Hi,

You should try linking with "/usr/lib/libresolv.a" instead of "-lresolv" --  
the latter uses the dynamic library, libresolv.so, unless you add the  
"-static" option. Just edit the Makefile accordingly.

Good luck,

Olivier.

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**Author:** ![system](https://canada1.discourse-cdn.com/flex011/uploads/zeek/original/1X/f09d732bc2cc7c7cc7e35db67cf4e1d5233ce7a7.png) [@system](https://community.zeek.org/u/system)\
**Post date:** [May 6, 2022, 3:36pm UTC](https://community.zeek.org/t/who-know-setup-of-libpcap/309/4 "2022-05-06T15:36:38Z")

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