I want to use pcap in my Clion project on linux. I installed libpcap-dev:
sudo apt-get install libpcap-dev
But then I try to compile any file, containing pcap functions like:
#include <stdio.h>
#include <pcap.h>
int main(int argc, char *argv[])
{
char *dev, errbuf[PCAP_ERRBUF_SIZE];
dev = pcap_lookupdev(errbuf);
if (dev == NULL) {
fprintf(stderr, "Couldn't find default device: %s\n", errbuf);
return(2);
}
printf("Device: %s\n", dev);
return(0);
}
I have cmake errors:
CMakeFiles/main.cpp.o: In function `main':
/main.cpp:8: undefined reference to `pcap_lookupdev'
I have not used cmake before. Cmake file:
cmake_minimum_required(VERSION 3.7)
project(mypr)
set(CMAKE_CXX_STANDARD 11)
set(SOURCE_FILES main.cpp)
add_executable(mypr ${SOURCE_FILES})
You should include and use a FindPCAP.cmake file to your CMakeLists.txt. Here is one: https://github.com/bro/cmake/blob/master/FindPCAP.cmake
Put FindPCAP.cmake in your project's source directory and try changing your CMakeLists.txt to:
cmake_minimum_required(VERSION 3.7)
project(mypr)
set(CMAKE_CXX_STANDARD 11)
include(FindPCAP.cmake)
set(SOURCE_FILES main.cpp)
add_executable(mypr ${SOURCE_FILES})
target_link_libraries(mypr ${PCAP_LIBRARY})