Working with cURL:: Getting started the easy way (on Win32)

  • November 8, 2008 – 4:20 pm
  • Posted in misc

So, how do you get started with cURL?

Visual Studio 2005 project files that get you started.

Problems that were resolved and how:

Mostly linker problems:

First linker problem you get

error LNK2019: unresolved external symbol __imp__curl_global_cleanup referenced in function _main
error LNK2019: unresolved external symbol __imp__curl_easy_cleanup referenced in function _main
error LNK2019: unresolved external symbol __imp__curl_easy_perform referenced in function _main
error LNK2019: unresolved external symbol __imp__curl_easy_setopt referenced in function _main
error LNK2019: unresolved external symbol __imp__curl_easy_init referenced in function _main
error LNK2019: unresolved external symbol __imp__curl_global_init referenced in function _main

* Resolved by following yang’s grandmother’s 14 step process

SECOND linking problem you get (after resolving the first)

Linking...
curllib.lib(ldap.obj) : error LNK2019: unresolved external symbol __imp__ldap_unbind_s referenced in function _Curl_ldap
curllib.lib(ldap.obj) : error LNK2019: unresolved external symbol __imp__ldap_msgfree referenced in function _Curl_ldap

* Resolved by linking in wldap32.lib by yang


6 Comments

    • Ryan
    • Posted May 4, 2009 at 9:30 pm
    • Permalink

    This fucking piece of shit didn’t help me one little fucking bit.
    I followed it EXACTLY, SEVERAL TIMES!
    All it did was give me more of the “unresolved external” errors.
    Fuck this.

    • matt
    • Posted June 14, 2009 at 5:44 pm
    • Permalink

    the only thing missing (that resolves the above problem) is to (last thing in step 15)
    right click MyFirstAttempt
    properties
    all releases
    configuration properties
    linker
    input
    and set
    additional dependencies
    to
    libcurl.lib ws2_32.lib winmm.lib wldap32.lib

    its the wldap32.lib which is required, see:
    http://curl.haxx.se/mail/lib-2007-11/0300.html

    • Anonymous
    • Posted October 27, 2009 at 9:08 pm
    • Permalink

    @Ryan: This is why software developers are so highly paid. Dumbasses like you dont have the patience to put any effort forth.

    Thanks. One less person to compete with.

  4. C’mon now Anonymous, you can’t say you haven’t ever been that frustrated before..

    • Daivuk
    • Posted December 14, 2009 at 4:57 pm
    • Permalink

    Just note, I am also trying to fix “unresolved external symbol __imp_ curl_easy_setopt” and adding the libs Ryan say doesn’t help.

    • Daivuk
    • Posted December 14, 2009 at 5:13 pm
    • Permalink

    Ok, if that can help other people, I found the problem :)
    I’ve been so lucky to find it…
    You have to add the preprocessors:
    ;BUILDING_LIBCURL;HTTP_ONLY

    And, the libs that Ryan mentioned.
    This way it works…


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