Building libcurl with SSL support on Windows

Question

I\'m using libcurl in a Win32 C++ application.

I have the curllib.vcproj project added to my solution and set my other projects to depend on it.

How do I bui

Answer 1

How to build libcurl C/C++ with OpenSSL (SSL support) on Windows

1. Install libcurl
2. Install OpenSSl
3. Build libcurl with OpenSSL

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Installing libcurl

Go to the download page of libcurl and donwnload the ZIP file under Source Archives. In my case it is called curl-7.58.0.zip

Extract the archive and open projects/Windows/VC15/curl_all.sln with Visual Studio.

Installing OpenSSL

Download the windows binary of OpenSSL. In my case, I downloaded the windows installer file Win32 OpenSSL v1.1.0g from the Shining Light Productions distribution.

The installation folder for me is C:\OpenSSL-Win32.

Building libcurl with OpenSSL

In the curl_all.sln Visual Studio solution file, change the build configuration to DLL Debug - DLL OpenSSL.

In the Solution Explorer, right click the project curl and go to Properties.

Under Linker -> General modify Additional Library Directories and add the path to your OpenSSL directory + \lib. In my case, this is C:\OpenSSL-Win32\lib.

Apply and close the properties window.

Right click the project libcurl and do the same as the previous step, add OpenSSL directory + \lib to Additional Library Directories under Linker -> General.

Under C/C++ -> General, add C:\OpenSSL-Win32\include to the Additional Include Directories.

Finally go to Linker -> Input and modify Additional Dependencies. Replace all the lib files to the following:

ws2_32.lib
wldap32.lib
openssl.lib
libssl.lib
libcrypto.lib

Apply and close the properties window.

With the DLL Debug - DLL OpenSSL build configuration still selected, go to Build -> Build Solution.

Copy the two dll files libcrypto-1_1.dll and libssl-1_1.dll from the OpenSSL bin directory (C:\OpenSSL-Win32\bin) to the just created build directory curl-7.58.0\build\Win32\VC15\DLL Debug - DLL OpenSSL.

Validating Build

Inside the build directory, run curld.exe. If it runs with no errors (missing dll, etc.) then your build was successful.