Tag Archives: OpenSSL

Compiling OpenSSL 1.1 with MSVC2017 for using with QT 5.13

QT does not work with OpenSSL 1.0 anymore. Versions QT 5.12.4 and above require OpenSSL 1.1, but fortunately OpenSSL 1.1 can be easily compiled with MS2017 as follows:

set PATH=%PATH%;C:\Perl64\bin
set PATH=%PATH%;C:\PFiles\nasm-2.14.02-win64
perl Configure VC-WIN64A

The key to the success is using ‘VS2017 x64 Native Tools Command Prompt‘, but not ‘VS2017 Developer Command Prompt’.

To make QT use OpenSSL, two dlls


should be copied to QT binary directory, for example, C:\Qt\Qt5.13.0\5.13.0\msvc2017_64\bin

How I compiled OpenSSL from sources with VS2015

I installed Perl, downloaded and extracted OpenSSL 1.1.0h and built 64 bit version in VS2015 x64 Native Tools Command Prompt with the following commands:

set PATH=%PATH%;C:\Perl64\bin
perl Configure VC-WIN64A no-asm

32 bit version can be built with VC-WIN32 configuration option as described in INSTALL:

on Windows (only pick one of the targets for configuration):
$ perl Configure { VC-WIN32 | VC-WIN64A | VC-WIN64I | VC-CE }
$ nmake
$ nmake test
$ nmake install

probably ‘A’ suffix means AMD and ‘I’ means something else, so we need ‘A’.