static QPair<QSystemLibrary*, QSystemLibrary*> loadOpenSslWin32()

{

    QPair<QSystemLibrary*,QSystemLibrary*> pair;

    pair.first = 0;

    pair.second = 0;

    // When OpenSSL is built using MSVC then the libraries are named 'ssleay32.dll' and 'libeay32'dll'.

    // When OpenSSL is built using GCC then different library names are used (depending on the OpenSSL version)

    // The oldest version of a GCC-based OpenSSL which can be detected by the code below is 0.9.8g (released in 2007)

    if (!tryToLoadOpenSslWin32Library(QLatin1String("ssleay32"), QLatin1String("libeay32"), pair)) {

        if (!tryToLoadOpenSslWin32Library(QLatin1String("libssl-10"), QLatin1String("libcrypto-10"), pair)) {

            if (!tryToLoadOpenSslWin32Library(QLatin1String("libssl-8"), QLatin1String("libcrypto-8"), pair)) {

                tryToLoadOpenSslWin32Library(QLatin1String("libssl-7"), QLatin1String("libcrypto-7"), pair);

            }

        }

    }

    return pair;

}

    # Add optional SSL libs

    # Static linking of OpenSSL with msvc:

    #   - Binaries http://slproweb.com/products/Win32OpenSSL.html

    #   - also needs -lUser32 -lAdvapi32 -lGdi32 -lCrypt32

    #   - libs in <OPENSSL_DIR>\lib\VC\static

    #   - configure: -openssl -openssl-linked -I <OPENSSL_DIR>\include -L <OPENSSL_DIR>\lib\VC\static OPENSSL_LIBS="-lUser32 -lAdvapi32 -lGdi32" OPENSSL_LIBS_DEBUG="-lssleay32MDd -llibeay32MDd" OPENSSL_LIBS_RELEASE="-lssleay32MD -llibeay32MD"

    -no-openssl ........ Do not compile support for OpenSSL.

 +  -openssl ........... Enable run-time OpenSSL support.

    -openssl-linked .... Enabled linked OpenSSL support.