how do i link wininet library with cmake - c++

Question

This is c++ code to get IP address (main.cpp) (project -> Prueba2 ).
#include <iostream>
#include <windows.h>
#include <wininet.h>
std::string real_ip() {
HINTERNET net = InternetOpen("IP retriever",
INTERNET_OPEN_TYPE_PRECONFIG,
NULL,
NULL,
0);
HINTERNET conn = InternetOpenUrl(net,
"http://myexternalip.com/raw",
NULL,
0,
INTERNET_FLAG_RELOAD,
0);
char buffer[4096];
DWORD read;
InternetReadFile(conn, buffer, sizeof(buffer)/sizeof(buffer[0]), &read);
InternetCloseHandle(net);
return std::string(buffer, read);
}
int main() {
std::cout << real_ip() << std::endl;
return 0;
}
CMakeLists.txt file for compiling.
cmake_minimum_required(VERSION 3.22)
project(Prueba2)
set(CMAKE_CXX_STANDARD 20)
add_executable(Prueba2 main.cpp)
I have to link this library but i don't know how, this error appears. I know how to compile it with g++ adding the library with -lwininet and it works correctly, i'm trying to do it with cmake now. Thank you for your help
undefined reference to `__imp_InternetOpenA'
C:\Program Files\JetBrains\CLion 2022.1.3\bin\mingw\bin/ld.exe: C:/Users/JAVIER/CLionProjects/Prueba2/main.cpp:13: undefined reference to `__imp_InternetOpenUrlA'
C:\Program Files\JetBrains\CLion 2022.1.3\bin\mingw\bin/ld.exe: C:/Users/JAVIER/CLionProjects/Prueba2/main.cpp:23: undefined reference to `__imp_InternetReadFile'
C:\Program Files\JetBrains\CLion 2022.1.3\bin\mingw\bin/ld.exe: C:/Users/JAVIER/CLionProjects/Prueba2/main.cpp:24: undefined reference to `__imp_InternetCloseHandle'

Answer 1

You can use target_link_libraries:
...
add_executable(Prueba2 main.cpp)
target_link_libraries(Prueba2 wininet)