[Development] Build Qt 5 in 32-bit with mingw-builds 4.7.2

[Stephen Chu]

I just installed mingw-build 4.7.2 on Windows 7 64-bit. I then 
configured Qt 5 this way:

configure -developer-build -opensource -confirm-license -nomake tests 
-nomake examples -c++11


The built libraries are in 64-bit. How do I configure Qt 5 to build 
32-bit libs?

Thanks.