https://wiki.qt.io/MSYS2
http://wiki.qt.io/Compiling_OpenSSL_with_MinGW
https://wiki.qt.io/MinGW-64-bit
https://wiki.qt.io/Hacking_on_Qt%27s_SSL_Support
https://wiki.qt.io/Building_Qt_Desktop_for_Windows_with_MSVC
https://wiki.qt.io/Qt_5.6_Tools_and_Versions
https://wiki.qt.io/Qt_5.9_Tools_and_Versions
单独下载的Qt library则一般不带SSL（包括QT FAQ）
http://www.cnblogs.com/E7868A/archive/2012/11/15/2771501.html
http://www.oldcai.com/archives/208
http://qt-project.org/faq/answer/how_can_i_add_ssl_support_to_my_qt_application
搜索：qt openssl 编译
http://blog.csdn.net/cibiren2011/article/details/10095021