Please try to use the latest available  version on community site. I 
tried it and didn't find both problems you reported in your message.

Kevin Stallard wrote:
> Hi,
>
> I'm using TAU build id: I20080413.  I can't seem to figure out how to make the CDT do incremental builds.  As it 
stands, when I build a C++ project, it is like a rebuild all.
>
> The C/C++ Build settings show that the Internal builder is being used.  As a side note, I can't seem to change that 
option (it's greyed out).
>
> Any ides or suggestions on how to get it to build incrementally?
>
> Thanks
> Kevin
>
> _______________________________________________
> General
> http://community.qnx.com/sf/go/post12990
>
>    

In the "C/C++ Build", there is a "Behaviour" tab. Did you enable the "Build (Incremental build) check box?