windows compile libcurl + openssl

use:

c ++ send http requests using curl library, there are some functions, such as MD5, hac encryption, we need to use openssl;

So it is necessary

OpenSSL is an open source third-party library that implements the SSL (Secure SocketLayer) and TLS (Transport Layer Security) protocol, is widely used in enterprise applications. For the average developer,  Win32 OpenSSL  download a good way to have compiled OpenSSL library is easy and effort on. For advanced users to develop, may require appropriate modifications or cut OpenSSL, then compile it became a key issue.

Here, we focus on how to compile OpenSSL libraries in Windows.

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Preparing the Environment

1. Download and install the Visual Studio (VS 2015 with an example).

2. Download and install ActivePerl. 
   Download: http://www.activestate.com/activeperl/downloads 
   I downloaded: ActivePerl-5.26.0.2600-MSWin32-x64-403866.exe

   Open a command prompt, navigate to the  D:\Program Files\Perl\eg directory, execute  perl example.pl, if prompted  Hello from ActivePerl! then the Perl installation was successful:

   

3. Download and install Nasm assembler, and  D:\Program Files\NASM added to the Path system environment variable. 
   Download: http://www.nasm.us/ 
   I downloaded: nasm-2.13.01-Installer-x64.exe

4. Download and install the OpenSSL 
   Download: http://www.openssl.org/ 
   I downloaded: OpenSSL-1.0.2m.tar.gz

   Complete all the steps above to unpack the OpenSSL package  E:\openssl-1.0.2m, you can build.

   Note:  unpacked directory there are two files - INSTALL.W32, INSTALL.W64, contains a separate compilation step for OpenSSL.

Compilation step

1. Open a command prompt, navigate to  E:\openssl-1.0.2m:

   

2. Input  perl Configure VC-WIN32 --prefix=E:\OpenSSL(to install it  E:\OpenSSL):

   

3. Input  ms\do_nasm:

   

4. The positioning command to the prompt  D:\Program Files\Microsoft Visual Studio 14.0\VC\bin, and enter vcvars32.bat:

   

   Without this step, you will be prompted nmake is not an internal or external command and a series of errors.

5. Again to locate the command prompt  E:\openssl-1.0.2m, and enter  nmake -f ms\ntdll.mak:

   

   After completion, it will  openssl-1.0.2m generate a file named out32dll folder directory, which contains some dynamic libraries and exe files:

   

6. Enter  nmake -f ms\ntdll.mak test, if the final display  passed all tests then the correct library generated:

   

7. Input  nmake -f ms\ntdll.mak install:

   

   After completion, it will  E:\OpenSSL generate bin, include, lib directory, ssl four folders:

   

note:

• Above is compiled release version to compile debug version of the above-mentioned step 2 of the  VC-WIN32 change  debug-VC-WIN32can be.
• To compile a static library, use  ms\nt.mak replace used above  ms\ntdll.mak can be.
• To generate a library without compilation support, you need to use the above-described steps 2  perl Configure VC-WIN32 no-asm --prefix=E:\OpenSSL and  ms\do_ms replaced.
• In  E:\openssl-1.0.2m\tmp32dll comprising a respective file folder assembly.