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Having issues using the cURL libraries for Dev-C++ in Windows 7

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(开发者_如何学编程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! :)


There's two things you need to do to use a (compiled) library:

  • Add the #includes so the compiler knows the library.
  • Add the .libs (or .as) so the linker knows where to find the compiled library's code.

You're probably missing the latter. I don't use Dev-C++ so I can't help with how to add it, though.


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.

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