>> Basically the #define TQT_REAL_TQT is not being set.
>> tqt3 sets that define in qglobal.h, so one of the only ways for the
>> build
>> to break is if the wrong qglobal.h file is being included.
>
> How did you determine that? I could add some error checks in my build
> scripts if I knew on what to key.

It's just a guess. :-)

Try adding this line:

#define TQT_REAL_TQT 1

to the top of your installed tqt.h file, then try to rebuild tdelibs.

Tim