Qt5 build is disrupted by “fatal error: don’t know how to make module module_qtjson_db-make_default”

I am building Qt5 in Visual Studio 2010, and I get the above error in the title before the build stops. Is this a module that I can find and delete? Or am I missing a dependency I do not know about? I have Perl, Python and OpenSSL installed on my system (and OpenSSL’s bin path is in my PATH variable)

Any input at all at this point would be greatly appreciated, I’ve been trying to build Qt5 now for a very long time!

Thanks in advance. If any further information is required, please do not hesitate to ask.