1. Introduction

The libpcap library is installed on the x86-based Ubuntu. The predecessors have written very clearly. For details, please refer to:

as well as

If you need any dependency packages during the installation process, just apt-get install xxx related packages directly.

This article mainly introduces how to transplant libpcap library to arm platform to realize the function of grabbing network packets on arm architecture.

 

2. Start transplanting

Many porting libpcap library to arm on the Internet are all old versions such as libpcap-1.0.0, which have little reference value. This article transplants the latest version of libpcap-1.9.1, I hope it will be used for future reference.

A. Download and unzip

(1) Go to the official websitehttp://www.tcpdump.org/Download libpcap library, pay attention to download libpcap, not download tcpdump library.

(2) Unzip: tart -xvzf libpcap-1.9.1.tar.gz; then enter the libpcap-1.9.1 directory.

(3) There is no Makefile in the libpcap-1.9.1 directory. First, you need to configure it to generate a Makefile.

Enter the command: ./configure --host=arm-linux-gnueabihf --build=i686-pc-linux

In this instruction, the --build=i686-pc-linux part is for 64-bit Linux, and this parameter can be omitted.

(4) Under normal circumstances, a Makefile will be generated.

B. Modify the Makefile

(1) Open Makefile and change the value of prefix to the installation path of your cross-compiler. My installation path is:

The cross compiler installed by CC compiler (I installed arm-linux-gnueabihf-gcc):

Note: The Makefile file may have permission problems and cannot be modified, so you need to chmod 777 Makefile to change the Makefile permissions.

(2) After the Makefile is modified, make it first, and then make install.

Done appears, indicating that the installation is successful.

C. Copy of link library

If the libpacp library is successfully installed, libpcap.a and libpcap.so.1.9.1 will be generated. Copy these generated libraries to the root directory /usr/local/lib/ directory:

Because, when arm-linux-gnueabihf-gcc is compiling, it will first search for the corresponding library in the /usr/local/lib directory.

 

D. Code compilation

In your code.c directory, enter the command (if you did not write the Makefile yourself):

arm-linux-gnueabihf-gcc test.c -o test -lpcap

Can generate executable files for arm architecture:

The test is the executable file of the arm platform: