Installing libpcap with Napatech Extensions

About this task

Tip: You can use the package_install_3gd-x.y.z.sh script described in DN-0379 and DN-0393 to install Napatech libpcap, instead of using the procedure in this section.

Before you begin

It is a prerequisite for installing Napatech libpcap that an NT driver package is installed (see DN-0379 or DN-0393).

The following are required in order to build and install libpcap:

GCC version 4.0 or later
GNU make
flex and bison or lex and yacc. Some versions of lex are insufficient to compile libpcap; if this is the case, install flex and bison.

Steps

To install libpcap with Napatech extensions:

Procedure

Download the product package for your operating system from supportportal.napatech.com (the Napatech Support Portal).
Expand the product package archive and enter the ntanl_package_3gd-x.y.z-linux/pcap directory:
```
$ tar xzf ntanl_package_3gd-x.y.z-linux.tar.gz
$ cd ntanl_package_3gd-x.y.z-linux
$ cd pcap
```

Enter the nt_libpcap_x.y.z directory:

$ tar xfz nt_libpcap_x.y.z.tar.gz
$ cd nt_libpcap_x.y.z

Determine which version of libpcap with Napatech extensions that you want to install. Refer to the README file for more information about available versions.
```
$ less README
$ cd libpcap-x.y.z
```
Configure for installation in the Napatech driver installation directory:
```
$ ./configure --prefix=/opt/napatech3
```
To install the libpcap static and shared library, execute the following command:
For FreeBSD:
```
$ sudo gmake install
```
For Linux:
```
$ sudo make install
```
To update ldd cache, execute the following command:
```
$ sudo ldconfig -f /etc/ld.so.conf
```