Comment 5 for bug 364185

I managed to reproduce the problem on my computer. It looks like the bug comes from MinGW's linker, it can't resolve the
SSL_CTX_add_client_CA symbol. The problem can also be seen on buildbots, in the first compile step:

Info: resolving _SSL_CTX_add_client_CA by linking to __imp__SSL_CTX_add_client_CA (auto-import)

I did build this branch with MinGW in the past, and I'm almost certain that I ran the tests on it, but I had some local modifications to the setup script. I'll try to see if any of those changes make a difference.