Qt 4.6.0 source+ minGv + compile errors

[giusepped]

I am trying to compile Qt 4.6.0 from source, because Qwt 5.2. does link run if I use Qt 4.6. sdk.
Well, I downloaded the source and start compile with mingw32-make.
After hours of compiling I got the errors ( I put only the main lines):

.....backendnode.h:37 IPin was not configured in this scope....
.....backendnode.h:37 template argument 1 is invalid

and so on, all erros in backednode.h.
Why? I'm missing something?
Regards

[wysota]

Some more background would be helpful. What are you compiling to be exact? Where does the error occur?