Question

I reciently installed the cURL libraries in Dev-C++ using the Packman.exe which is included in the Dev-C++ install. When I try to use #include <curl/curl.h> I do not get an error, so I am assuming that it installed correctly. However, when I try and compile an example from the cURL website, I get the following errors:

[Linker error] undefined reference to _imp__curl_easy_init
[Linker error] undefined reference to _imp__curl_easy_setopt
[Linker error] undefined reference to _imp__curl_easy_perform
[Linker error] undefined reference to _imp__curl_easy_cleanup

The source code I am using is as follows:

#include <stdio.h>
#include <curl/curl.h>
int main(void)
{
  CURL *curl;
  CURLcode res;
  curl = curl_easy_init();
  if(curl) {
    curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
    res = curl_easy_perform(curl);
    curl_easy_cleanup(curl);
  }
  return 0;
}

Thank you! 🙂

Answer 1

There are a couple of ways you can add the .lib and/or .a files to the linker in Dev-C++:

The following is what I did when completing the boost tutorial http://www.boost.org/doc/libs/1_46_1/more/getting_started/windows.html#link-your-program-to-a-boost-library :

• Project > Project Options > Directories > Library Directories – and then adding the directory where the *.a files reside.

or

• Project > Project Options > Parameters > Linker

  -L"C:\Path\To Your\Lib\Files\boost_1_46_1\stage\lib"
  -l-lboost_regex-mgw34-1_46_1
  

I haven’t used libcurl but hopefully the process is similar.